1.
Climate
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Climate is the statistics of weather, usually over a 30-year interval. Climate differs from weather, in that weather only describes the conditions of these variables in a given region. A regions climate is generated by the system, which has five components, atmosphere, hydrosphere, cryosphere, lithosphere. The climate of a location is affected by its latitude, terrain, climates can be classified according to the average and the typical ranges of different variables, most commonly temperature and precipitation. The most commonly used classification scheme was the Köppen climate classification, the Bergeron and Spatial Synoptic Classification systems focus on the origin of air masses that define the climate of a region. Paleoclimatology is the study of ancient climates, Climate models are mathematical models of past, present and future climates. Climate change may occur long and short timescales from a variety of factors. For example, a 3°C change in mean annual temperature corresponds to a shift in isotherms of approximately 300–400 km in latitude or 500 m in elevation, therefore, species are expected to move upwards in elevation or towards the poles in latitude in response to shifting climate zones. Climate is commonly defined as the weather averaged over a long period, the standard averaging period is 30 years, but other periods may be used depending on the purpose. Climate also includes statistics other than the average, such as the magnitudes of day-to-day or year-to-year variations, the classical period is 30 years, as defined by the World Meteorological Organization. These quantities are most often surface variables such as temperature, precipitation, Climate in a wider sense is the state, including a statistical description, of the climate system. The World Meteorological Organization describes climate normals as reference points used by climatologists to compare current climatological trends to that of the past or what is considered normal, a Normal is defined as the arithmetic average of a climate element over a 30-year period. A30 year period is used, as it is enough to filter out any interannual variation or anomalies. The WMO originated from the International Meteorological Organization which set up a commission for climatology in 1929. At its 1934 Wiesbaden meeting the commission designated the thirty-year period from 1901 to 1930 as the reference time frame for climatological standard normals. In 1982 the WMO agreed to update climate normals, and in these were completed on the basis of climate data from 1 January 1961 to 31 December 1990. The difference between climate and weather is usefully summarized by the popular phrase Climate is what you expect, weather is what you get. Over historical time spans there are a number of nearly constant variables that determine climate, including latitude, altitude, proportion of land to water and these change only over periods of millions of years due to processes such as plate tectonics
2.
Evapotranspiration
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Evapotranspiration is the sum of evaporation and plant transpiration from the Earths land and ocean surface to the atmosphere. Evaporation accounts for the movement of water to the air from sources such as the soil, canopy interception, transpiration accounts for the movement of water within a plant and the subsequent loss of water as vapor through stomata in its leaves. Evapotranspiration is an important part of the water cycle, an element that contributes to evapotranspiration can be called an evapotranspirator. It is a reflection of the energy available to evaporate water, actual evapotranspiration is said to equal reference evapotranspiration when there is ample water. Some US states utilize a full cover alfalfa reference crop that is 0.5 m in height, rather than the green grass reference. Evapotranspiration is a significant water loss from drainage basins, types of vegetation and land use significantly affect evapotranspiration, and therefore the amount of water leaving a drainage basin. Because water transpired through leaves comes from the roots, plants with deep reaching roots can more constantly transpire water, herbaceous plants generally transpire less than woody plants because they usually have less extensive foliage. Conifer forests tend to have higher rates of evapotranspiration than deciduous forests, particularly in the dormant and this is primarily due to the enhanced amount of precipitation intercepted and evaporated by conifer foliage during these periods. Factors that affect evapotranspiration include the growth stage or level of maturity, percentage of soil cover, solar radiation, humidity, temperature. Isotope measurements indicate transpiration is the component of evapotranspiration. Through evapotranspiration, forests reduce water yield, except in unique ecosystems called cloud forests, trees in cloud forests collect the liquid water in fog or low clouds onto their surface, which drips down to the ground. These trees still contribute to evapotranspiration, but often more water than they evaporate or transpire. In areas that are not irrigated, actual evapotranspiration is usually no greater than precipitation and it will usually be less because some water will be lost due to percolation or surface runoff. An exception is areas with water tables, where capillary action can cause water from the groundwater to rise through the soil matrix to the surface. If potential evapotranspiration is greater than precipitation, then soil will dry out. Evapotranspiration can never be greater than PET, but can be if there is not enough water to be evaporated or plants are unable to transpire readily. Evapotranspiration can be measured or estimated using several methods, pan evaporation data can be used to estimate lake evaporation, but transpiration and evaporation of intercepted rain on vegetation are unknown. There are three approaches to estimate evapotranspiration indirectly
3.
Desert climate
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An area that features this climate usually experiences from 25 to 200 mm per year of precipitation and in some years may experience no precipitation at all. Averages may be even less such as in Arica, Chile, there are usually two or three variations of a desert climate, a hot desert climate, a cold desert climate and, sometimes, a mild desert climate. To determine whether a location has a climate, the precipitation threshold is determined. If the areas precipitation is less than half the threshold. Hot desert climates are found under the subtropical ridge where there is largely unbroken sunshine for the whole year due to the stable descending air. These areas are located between 30 degrees south and 30 degrees north latitude, under the subtropical latitudes called the horse latitudes, hot desert climates are generally hot, sunny and dry year-round. Hot desert climates also reach similar latitudes in the Middle East, North Africa, hot desert climates usually feature hot, sometimes exceptionally hot, periods of the year. In many locations featuring a hot climate, maximum temperatures of over 40 °C are not uncommon in summer. The world absolute heat records, over 50 °C, are generally in the hot deserts, some desert locations consistently experience very high temperatures all year long, even during wintertime. These locations feature some of the highest annual average temperatures recorded on Earth and this last feature is seen in some parts of deserts of Africa and Arabia. During colder periods of the year, night-time temperatures can drop to freezing or below due to the radiation loss under the clear skies. However, very rarely do temperatures drop far below freezing, only one region in Europe has a hot desert climate, Province of Almeria, Province of Alicante and Province of Murcia in South Eastern Spain. Cold desert climates usually feature warm and dry summers, though summers typically are not quite as hot as summers in hot desert climates, unlike hot desert climates, cold desert climates tend to feature cold winters with rare snow. Cold desert climates are found at higher altitudes than hot desert climates. A cold desert climate is found in temperate zones, usually in the rain shadow of high mountains. A classic example of this is the Patagonian Desert in Argentina bounded by the Andes to its west, in the case of Central Asia, mountains restrict precipitation from the monsoon. The Gobi desert in Mongolia is an example of this. Though hot in summer, it shares the cold winters of the rest of Central Asia
4.
Biome
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A biome /ˈbaɪoʊm/ is a community of plants and animals that have common characteristics for the environment they exist in, and can be found over a range of continents. Spanning continents, biomes are distinct biological communities that have formed in response to a shared physical climate, biome is a broader term than habitat, any biome can comprise a variety of habitats. While a biome can cover large ares, a microbiome is a mix of organisms that coexist in a space as well. For example, the microbiome is the collection of bacteria, viruses. The biotas of the Earth make up the biosphere, the term was suggested in 1916 by Clements, originally as a synonym for biotic community of Möbius. In 1935, Tansley added the climatic and soil aspects to the idea, the International Biological Program projects popularized the concept of biome. However, in contexts, the term biome is used in a different manner. Both includes many biomes in fact and their boundaries must therefore be drawn arbitrarily and their characterization made according to the average conditions that predominate in them. A1978 study on North American grasslands found a positive correlation between evapotranspiration in mm/yr and above-ground net primary production in g/m2/yr. These findings help explain the categories used in Holdridge’s bioclassification scheme, Holdridge uses the four axes to define 30 so-called humidity provinces, which are clearly visible in his diagram. While this scheme largely ignores soil and sun exposure, Holdridge acknowledged that these were important and his scheme can be seen as a simplification of Holdridges, more readily accessible, but missing Holdridges greater specificity. Whittaker based his approach on theoretical assertions and empirical sampling and he was in a unique position to make such a holistic assertion because he had previously compiled a review of biome classifications. Physiognomy, the apparent characteristics, outward features, or appearance of communities or species. Biome, a grouping of terrestrial ecosystems on a continent that are similar in vegetation structure, physiognomy, features of the environment. Formation, a kind of community of plants on a given continent. Biome-type, grouping of convergent biomes or formations of different continents, whittakers distinction between biome and formation can be simplified, formation is used when applied to plant communities only, while biome is used when concerned with both plants and animals. Whittakers convention of biome-type or formation-type is simply a method to categorize similar communities. Whittaker considered four main ecoclines in the terrestrial realm, changes in physiognomic complexity vary with how favorable of an environment exists
5.
Steppe
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In South Africa they are referred to as Veld. The prairie is an example of a steppe, though it is not usually called such and it may be semi-desert, or covered with grass or shrubs or both, depending on the season and latitude. The term is used to denote the climate encountered in regions too dry to support a forest. The soil is typically of chernozem type, steppes are usually characterized by a semi-arid and continental climate. Extremes can be recorded in the summer of up to 45 °C and in winter, besides this huge difference between summer and winter, the differences between day and night are also very great. In the highlands of Mongolia,30 °C can be reached during the day with sub-zero °C readings at night, the mid-latitude steppes can be summarized by hot summers and cold winters, averaging 250–510 mm of precipitation per year. Precipitation level alone is not what defines a steppe climate, potential evapotranspiration must also be taken into account, the Eurasian Grass-Steppe of the temperate grasslands, savannas, and shrublands had a role in the spread of the horse, the wheel, and the Indo-European languages. The Indo-European expansion and diverse invasions of horse archer civilizations of the steppe eventually led to, the Pannonian Plain is another steppe region in eastern Europe, primarily Hungary. Another large steppe area is located in the central United States, western Canada, the shortgrass prairie steppe is the westernmost part of the Great Plains region. The Channeled Scablands in Southern British Columbia and Washington State is an example of a region in North America outside of the Great Plains. In South America, cold steppe can be found in Patagonia, relatively small steppe areas can be found in the interior of the South Island of New Zealand. In Asia, a subtropical steppe can be found in semi-arid lands that fringe the Thar Desert of the Indian subcontinent, in Australia, subtropical steppe can be found in a belt surrounding the most severe deserts of the continent and around the Musgrave Ranges. Ecology and Conservation of Steppe-land Birds by Manuel B. Morales, Santi Mañosa, Jordi Camprodón, international Symposium on Ecology and Conservation of steppe-land birds
6.
Poaceae
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Poaceae or Gramineae is a large and nearly ubiquitous family of monocotyledonous flowering plants known as grasses. Poaceae includes the cereal grasses, bamboos and the grasses of natural grassland and cultivated lawns, Grasses have stems that are hollow except at the nodes and narrow alternate leaves borne in two ranks. The lower part of each leaf encloses the stem, forming a leaf-sheath, with ca 780 genera and around 12,000 species, Poaceae are the fifth-largest plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae. Grasslands such as savannah and prairie grasses are dominant are estimated to constitute 40. 5% of the land area of the Earth, excluding Greenland. Grasses are also an important part of the vegetation in many habitats, including wetlands, forests. Though commonly called grasses, seagrasses, rushes, and sedges fall outside this family, the rushes and sedges are related to the Poaceae, being members of the order Poales, but the seagrasses are members of order Alismatales. The name Poaceae was given by John Hendley Barnhart in 1895, based on the tribe Poeae described in 1814 by Robert Brown, the term is derived from the Ancient Greek πόα. Grasses include some of the most versatile plant life-forms, a cladogram shows subfamilies and approximate species numbers in brackets, Before 2005, fossil findings indicated that grasses evolved around 55 million years ago. Recent findings of grass-like phytoliths in Cretaceous dinosaur coprolites have pushed this back to 66 million years ago. In 2011, revised dating of the origins of the rice tribe Oryzeae suggested a date as early as 107 to 129 Mya, a multituberculate mammal with grass-eating adaptations seems to suggest that grasses were already around at 120 mya. This separation occurred within the short time span of about 4 million years. Grass leaves are always alternate and distichous, and have parallel veins. Each leaf is differentiated into a lower sheath hugging the stem, the leaf blades of many grasses are hardened with silica phytoliths, which discourage grazing animals, some, such as sword grass, are sharp enough to cut human skin. A membranous appendage or fringe of hairs called the ligule lies at the junction between sheath and blade, preventing water or insects from penetrating into the sheath, flowers of Poaceae are characteristically arranged in spikelets, each having one or more florets. The spikelets are further grouped into panicles or spikes, the part of the spikelet that bears the florets is called the rachilla. A spikelet consists of two bracts at the base, called glumes, followed by one or more florets, a floret consists of the flower surrounded by two bracts, one external—the lemma—and one internal—the palea. The flowers are usually hermaphroditic—maize being an important exception—and anemophilous or wind-pollinated, the perianth is reduced to two scales, called lodicules, that expand and contract to spread the lemma and palea, these are generally interpreted to be modified sepals. This complex structure can be seen in the image on the right, the fruit of grasses is a caryopsis, in which the seed coat is fused to the fruit wall
7.
Shrub
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A shrub or bush is a small to medium-sized woody plant. It is distinguished from a tree by its multiple stems and shorter height, plants of many species may grow either into shrubs or trees, depending on their growing conditions. Small, low shrubs, generally less than 2 m tall, such as lavender, periwinkle, an area of cultivated shrubs in a park or a garden is known as a shrubbery. When clipped as topiary, suitable species or varieties of shrubs develop dense foliage, many shrubs respond well to renewal pruning, in which hard cutting back to a stool results in long new stems known as canes. Other shrubs respond better to selective pruning to reveal their structure, shrubs in common garden practice are generally considered broad-leaved plants, though some smaller conifers such as mountain pine and common juniper are also shrubby in structure. Species that grow into a shrubby habit may be deciduous or evergreen
8.
Contour line
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A contour line of a function of two variables is a curve along which the function has a constant value. It is a cross-section of the graph of the function f parallel to the x, y plane. In cartography, a contour line joins points of elevation above a given level. A contour map is a map illustrated with contour lines, for example a map, which thus shows valleys and hills. The contour interval of a map is the difference in elevation between successive contour lines. More generally, a line for a function of two variables is a curve connecting points where the function has the same particular value. The gradient of the function is always perpendicular to the contour lines, when the lines are close together the magnitude of the gradient is large, the variation is steep. A level set is a generalization of a line for functions of any number of variables. Contour lines are curved, straight or a mixture of lines on a map describing the intersection of a real or hypothetical surface with one or more horizontal planes. The configuration of these contours allows map readers to infer relative gradient of a parameter, in the latter case, the method of interpolation affects the reliability of individual isolines and their portrayal of slope, pits and peaks. Contour lines are given specific names beginning iso- according to the nature of the variable being mapped. Specific names are most common in meteorology, where multiple maps with different variables may be viewed simultaneously, the prefix iso- can be replaced with isallo- to specify a contour line connecting points where a variable changes at the same rate during a given time period. The words isoline and isarithm are general terms covering all types of contour line, an isogon is a contour line for a variable which measures direction. In meteorology and in geomagnetics, the term isogon has specific meanings which are described below, an isocline is a line joining points with equal slope. In population dynamics and in geomagnetics, the terms isocline and isoclinic line have specific meanings which are described below, equidistant is a line of equal distance from a given point, line, polyline. In geography, the word isopleth is used for lines that depict a variable which cannot be measured at a point. An example is population density, which can be calculated by dividing the population of a district by the surface area of that district. Each calculated value is presumed to be the value of the variable at the centre of the area, the idea of an isopleth map can be compared with that of a choropleth map
9.
Tropics
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The tropics are a region of the Earth surrounding the equator. The tropics are also referred to as the zone and the torrid zone. The tropics include all the areas on the Earth where the Sun is at a point directly overhead at least once during the solar year. The tropics are distinguished from the climatic and biomatic regions of Earth, which are the middle latitudes. Tropical is sometimes used in a sense for a tropical climate to mean warm to hot and moist year-round. Many tropical areas have a dry and wet season, the wet season, rainy season or green season, is the time of year, ranging from one or more months, when most of the average annual rainfall in a region falls. Areas with wet seasons are disseminated across portions of the tropics and subtropics, under the Köppen climate classification, for tropical climates, a wet season month is defined as a month where average precipitation is 60 millimetres or more. Tropical rainforests technically do not have dry or wet seasons, since their rainfall is distributed through the year. When the wet season occurs during the season, or summer, precipitation falls mainly during the late afternoon. The wet season is a time when air quality improves, freshwater quality improves and vegetation grows significantly, floods cause rivers to overflow their banks, and some animals to retreat to higher ground. Soil nutrients diminish and erosion increases, the incidence of malaria increases in areas where the rainy season coincides with high temperatures. Animals have adaptation and survival strategies for the wetter regime, unfortunately, the previous dry season leads to food shortages into the wet season, as the crops have yet to mature. Regions within the tropics may well not have a tropical climate, there are alpine tundra and snow-capped peaks, including Mauna Kea, Mount Kilimanjaro, and the Andes as far south as the northernmost parts of Chile and Argentina. Under the Köppen climate classification, much of the area within the tropics is classed not as tropical but as dry including the Sahara Desert. Tropical plants and animals are those native to the tropics. Tropical ecosystems may consist of rainforests, dry forests, spiny forests, desert. There are often significant areas of biodiversity, and species present, particularly in rainforests. In biogeography, the tropics are divided into Paleotropics and Neotropics, together, they are sometimes referred to as the Pantropic
10.
Subtropics
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The subtropics are geographic and climate zones located roughly between the tropic circle of latitude at 23.5 latitude and temperate latitudes. Subtropical climates are characterized by warm to hot summers and cool to mild winters with infrequent frost. Subtropical climates can occur at elevations within the tropics, such as in the southern end of the Mexican Plateau and in Vietnam. Six climate classifications use the term to define the various temperature. A great portion of the deserts are located within the subtropics. Within savanna regimes in the subtropics, a wet season is seen annually during the summer, within Mediterranean climate regimes, the wet season occurs during the winter. Areas bordering warm oceans are prone to heavy rainfall from tropical cyclones. Plants such as palms, citrus, mango, lychee, the tropics have been historically defined as lying between the Tropic of Cancer and Tropic of Capricorn, located at 23. 45° north and south latitude respectively. The poleward fringe of the subtropics is located at approximately 40° north and south latitude respectively, northern fringes of the type can go further north due to moderating effects of ocean streams, like in parts of Southern Europe due to heat transported by the Gulf Stream. Several methods have used to define the subtropical climate. In the Trewartha climate classification, a subtropical region should have at least eight months with a temperature greater than 10 °C. According to the Troll-Paffen climate classification, there exists one large subtropical zone named the warm-temperate subtropical zone. According to the E. Neef climate classification, the zone is divided into two parts, Rainy winters of the west sides and Eastern subtropical climate. According to the Wilhelm Lauer & Peter Frankenberg climate classification, the zone is divided into three parts, high-continental, continental, and maritime. According to the Siegmund/Frankenberg climate classification, subtropical is one of six zones in the world. Heating of the earth near the equator leads to large amounts of upward motion and convection along the trough or Intertropical convergence zone. The upper-level divergence over the near-equatorial trough leads to air rising and moving away from the equator aloft, as the air moves towards the Mid-Latitudes, it cools and sinks, which leads to subsidence near the 30th parallel of both hemispheres. This circulation is known as the Hadley cell and leads to the formation of the subtropical ridge, many of the worlds deserts are caused by these climatological high-pressure areas, located within the subtropics
11.
Tropical savanna climate
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Tropical savanna climate or tropical wet and dry climate is a type of climate that corresponds to the Köppen climate classification categories Aw and As. This latter fact is in direct contrast to a monsoon climate. In essence, a savanna climate tends to either see less rainfall than a tropical monsoon climate or have more pronounced dry seasons. There are generally four types of tropical climate,1. Distinct wet and dry seasons of relatively equal duration, most of the regions annual rainfall is experienced during the wet season and very little precipitation falls during the dry season. A lengthy dry season and a short wet season. This version features seven or more dry season months and five or less wet season months, there are variations within this version, On one extreme, the region receives just enough precipitation during the short wet season to preclude it from a semi-arid climate classification. This drier variation of the savanna climate is typically found adjacent to regions with semi-arid climates. On the other extreme, the features a lengthy dry season followed by a short. However, regions with this variation of the climate do not experience enough rainfall during the wet season to qualify as a monsoon climate. A lengthy wet season and a short dry season. This version features seven or more wet season months and five or less dry season months, a dry season with a noticeable amount of rainfall followed by a rainy wet season. Tropical savanna climates are most commonly found in Africa, Asia, the climate is also prevalent in sections of Central America, northern Australia and southern North America, specifically in sections of Mexico and the state of Florida in the United States. Most places that have this climate are found at the margins of the tropical zone. Similarly, the Caribbean coast, eastward from the Gulf of Urabá on the Colombia – Panamá border to the Orinoco river delta and this condition extends to the Lesser Antilles and Greater Antilles forming the Circumcaribbean dry belt. The length and severity of the dry season diminishes inland, at the latitude of the Amazon river—which flows eastward, East from the Andes, between the arid Caribbean and the ever-wet Amazon are the Orinoco river llanos or savannas, from where this climate takes its name. Sometimes As is used in place of Aw if the dry season occurs during the time of higher sun and this is the case in parts of Hawaii, East Africa, Sri Lanka and coastal regions of Northeastern Brazil, for instance. The difference between summer and winter in such locations is usually so slight that a distinction between an As and Aw climate is a quibble
12.
Humid subtropical climate
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A humid subtropical climate is a zone of climate characterised by hot, usually humid summers and mild to cool winters. It normally lies on the southeast side of all continents, generally between latitudes 25° and 40° and it tends to be located at coastal or near coastal locations. However, in cases it extends inland, most notably in China. Under the Köppen climate classification, subtropical climates are found in the warmest parts of his Warm Temperate climates or Cfa and this climate features mean temperatures in the coldest month between 0 °C and 18 °C and mean temperatures in the warmest month 22 °C or higher. However, while some climatologists have opted to describe this type as a humid subtropical climate Köppen himself never used this term. The humid subtropical climate classification was created under the Trewartha Climate classification. The Trewartha system was a 1966 update of the Köppen climate classification and this was seen to effectively separate temperate climates like London or New York City from true subtropical locations like Brisbane or Savannah for example. Rainfall often shows a peak, especially where monsoons are well developed, as in Southeast Asia. Most summer rainfall occurs during thunderstorms that build up due to the surface heating and strong subtropical sun angle. Weak tropical lows that move in from adjacent warm tropical oceans, winter rainfall is often associated with large storms in the westerlies that have fronts that reach down into subtropical latitudes. However, many subtropical climates such as southeast Asia or Florida have very dry winters, with frequent brush fires, in Africa, the humid subtropical climates are found in two separate areas on the southern hemisphere of the continent. The Cwa climate is found over a portion of the interior of the Middle. Some lower portions of the Ethiopian Highlands also have this climate, the climate is also found in the narrow coastal sections of southern and eastern South Africa, primarily in KwaZulu-Natal and the Eastern Cape provinces. South Africas version of this climate features heavy oceanic influences resulting in milder temperatures. This is particularly evident in its winters when temperatures do not drop as low as in other regions within the humid subtropical category. Locations in Asia with a subtropical climate differ from those in other continents in that they often have marked seasonal differences in precipitation. Cities near the boundary of this zone include Hong Kong, Hanoi. At Hainan Island and in Taiwan, the transitions from subtropical into fully tropical
13.
Outback
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The Outback is the vast, remote interior of Australia. Culturally, the Outback is deeply ingrained in Australian heritage, history, early European exploration of inland Australia was sporadic. More focus was on the more accessible and fertile coastal areas, the first party to successfully cross the Blue Mountains just outside Sydney was led by Gregory Blaxland in 1813,25 years after the colony was established. This contrasts with the ill-fated Burke and Wills expedition in 1860–61 which was better funded. The Overland Telegraph line was constructed in the 1870s along the route identified by Stuart, mineral exploration continues as new mineral deposits are identified and developed. While the early explorers used horses to cross the outback, the first woman to make the riding a horse was Anna Hingley. The paucity of land use has led to the Outback being recognised globally as one of the largest remaining. The savanna of northern Australia are the largest, intact savanna regions in the world, in the south, the Great Western Woodlands, which occupy 16,000,000 hectares, an area larger than all of England, are the largest remaining temperate woodland left on Earth. Reflecting the wide climatic and geological variation, the Outback contains a wealth of distinctive, the Australian Outback is full of very important well-adapted wildlife, although much of it may not be immediately visible to the casual observer. Many animals, such as red kangaroos and dingoes, hide in bushes to rest, birdlife is prolific, most often seen at waterholes at dawn and dusk. Huge flocks of budgerigars, cockatoos, corellas and galahs are often sighted, on bare ground or roads during the winter, various species of snakes and lizards bask in the sun, but they are rarely seen during the summer months. Feral animals such as camels thrive in central Australia, brought to Australia by pastoralists and explorers, feral horses known as brumbies are station horses that have run wild. Feral pigs, foxes, cats and rabbits are other imported animals that also degrade the environment, so time, the Outback is home to a diverse set of animal species, such as the kangaroo, emu and dingo. The Dingo Fence was built to restrict dingo movements into agricultural areas towards the south east of the continent, the marginally fertile parts are primarily utilised as rangelands and have been traditionally used for sheep or cattle grazing, on cattle stations which are leased from the Federal Government. While small areas of the outback consist of soils the majority has exceedingly infertile palaeosols. Riversleigh, in Queensland, is one of Australias most renowned fossil sites and was recorded as a World Heritage site in 1994, the 100 km2 area contains fossil remains of ancient mammals, birds and reptiles of Oligocene and Miocene age. The largest industry across the Outback, in terms of the occupied, is pastoralism, in which cattle, sheep. Capitalizing on the lack of improvement and absence of fertiliser and pesticide use
14.
Monsoon
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Usually, the term monsoon is used to refer to the rainy phase of a seasonally changing pattern, although technically there is also a dry phase. The term is sometimes used for locally heavy but short-term rains. The major monsoon systems of the world consist of the West African and Asia-Australian monsoons, the inclusion of the North and South American monsoons with incomplete wind reversal has been debated. The south-west monsoon winds are called Nairutya Maarut in India, the English monsoon came from Portuguese monção, ultimately from Arabic mawsim and/or Hindi mausam, perhaps partly via early modern Dutch monsun. Strengthening of the Asian monsoon has been linked to the uplift of the Tibetan Plateau after the collision of the Indian sub-continent and Asia around 50 million years ago. Because of studies of records from the Arabian Sea and that of the wind-blown dust in the Loess Plateau of China, testing of this hypothesis awaits deep ocean sampling by the Integrated Ocean Drilling Program. The monsoon has varied significantly in strength since this time, largely linked to climate change. A study of marine plankton suggested that the Indian Monsoon strengthened around 5 million years ago, then, during ice periods, the sea level fell and the Indonesian Seaway closed. When this happened, cold waters in the Pacific were impeded from flowing into the Indian Ocean and it is believed that the resulting increase in sea surface temperatures in the Indian Ocean increased the intensity of monsoons. Five episodes during the Quaternary at 2.22 Ma,1.83 Ma,0.68 Ma,0.45 Ma and 0.04 Ma were identified which showed a weakening of Leeuwin Current. The weakening of the LC would have an effect on the sea surface temperature field in the Indian Ocean, thus these five intervals could probably be those of considerable lowering of SST in the Indian Ocean and would have influenced Indian monsoon intensity. The impact of monsoon on the weather is different from place to place. In some places there is just a likelihood of having a more or less rain. In other places, quasi semi-deserts are turned into green grasslands where all sorts of plants. The Indian Monsoon turns large parts of India from a kind of semi-desert into green lands, see photos only taken 3 months apart in the Western Ghats. In places like this it is crucial for farmers to have the right timing for putting the seeds on the fields, Monsoons are large-scale sea breezes which occur when the temperature on land is significantly warmer or cooler than the temperature of the ocean. These temperature imbalances happen because oceans and land absorb heat in different ways, in contrast, dirt, sand, and rocks have lower heat capacities, and they can only transmit heat into the earth by conduction and not by convection. Therefore, bodies of water stay at an even temperature
15.
Wet season
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The rainy season, or monsoon season, is the time of year when most of a regions average annual rainfall occurs. It usually lasts one or more months, the term green season is also sometimes used as a euphemism by tourist authorities. Areas with wet seasons are dispersed across portions of the tropics and subtropics, under the Köppen climate classification, for tropical climates, a wet season month is defined as a month where average precipitation is 60 millimetres or more. In contrast to areas with savanna climates and monsoon regimes, Mediterranean climates have wet winters, some areas with pronounced rainy seasons will see a break in rainfall mid-season, when the intertropical convergence zone or monsoon trough moves to higher latitudes in the middle of the warm season. When the wet season occurs during a season, or summer, precipitation falls mainly during the late afternoon. In the wet season, air quality improves, fresh water quality improves, rivers overflow their banks, and some animals retreat to higher ground. Soil nutrients diminish and erosion increases, the incidence of malaria increases in areas where the rainy season coincides with high temperatures, particularly in tropical areas. Some animals have adaptation and survival strategies for the wet season, often, the previous dry season leads to food shortages in the wet season, as the crops have yet to mature. In areas where the rainfall is associated with a wind shift. Further, much of the total each day occurs in the first minutes of the downpour. However, since rain forests have rainfall spread evenly through the year and it is different for places with a Mediterranean climate. This shift in the jet stream brings much of the precipitation to the region. The peninsula of Italy has weather very similar to the western United States in this regard, areas with a savanna climate in Sub-Saharan Africa, such as Ghana, Burkina Faso, Darfur, Eritrea, Ethiopia, and Botswana have a distinct rainy season. Also within the climate regime, Florida and South Texas have a rainy season. Northern Guyana has two wet seasons, one in spring and the other in early winter. In western Africa, there are two rainy seasons across southern sections, but only one across the north. Within the Mediterranean climate regime, the west coast of the United States and the Mediterranean coastline of Italy, Greece, similarly, the wet season in the Negev desert of Israel extends from October through May. At the boundary between the Mediterranean and monsoon climates lies the Sonoran desert, which receives the two rainy seasons associated with each climate regime, the wet season is known by many different local names throughout the world
16.
Southwestern United States
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The population of the area is around 11 million people, with over half that in Arizona, the most populous cities are Phoenix, El Paso, Las Vegas, Albuquerque, and Tucson. Most of the area was part of the Viceroyalty of New Spain in the Spanish Empire before becoming part of Mexico and it became part of the United States through the Treaty of Guadalupe Hidalgo and the Gadsden Purchase. The deserts dominate the southern and western reaches of the area, the two major rivers of the region are the Colorado River, running in the northern and western areas, and the Rio Grande, running in the south. Formed approximately 8000 years ago, the Chihuahuan Desert is a dry desert. The Chihuahuan Desert spreads across the portion of the region, covering from southeastern Arizona, across southern New Mexico. While it is the second largest desert in the United States, only a third of the desert is within the United States, El Paso is the major city in this desert, with other smaller cities being Las Cruces and Roswell in New Mexico. The Chihuahuan is a rain shadow desert, formed two mountain ranges which block oceanic precipitation from reaching the area. The most prolific plants in this region are agave, yucca and creosote bushes, when people think of the desert southwest, the landscape of the Sonoran Desert is what mostly comes to mind. Rainfall averages between 4–12 inches per year, and the deserts most widely known inhabitant is the saguaro cactus and it is bounded on the northwest by the Mojave Desert, to the north by the Colorado Plateau and to the east by the Arizona Mountains forests and the Chihuahuan Desert. The portion of the Sonora Desert which lies in the Southwestern United States is the most populated area within the region. Six of the top ten major population centers of the region are found within its borders, Phoenix, Tucson, Mesa, Chandler, Glendale, also within its borders are Yuma and Prescott Arizona. The most northwest portion of the American Southwest is covered by the Mojave Desert, bordered on the south by the Sonoran Desert and the east by the Colorado Plateau, its range within the region makes up the southeast tip of Nevada, and the northwestern corner of Arizona. In terms of topography, the Mojave is very similar to the Great Basin Desert, the Mojave is the smallest, driest and hottest desert within the United States. The Mojave gets less than six inches of rain annually, the most prolific vegetation is the tall Joshua tree, which grow as tall as 40 feet, and are thought to live almost 1000 years. Other major vegetation includes the Parry saltbush and the Mojave sage, the Colorado Plateau varies from the large stands of forests in the west, including the largest stand of ponderosa pine trees in the world, to the Mesas to the east. Although not called a desert, the Colorado Plateau is mostly made up of high desert, the Plateau is characterized by a series of plateaus and mesas, interspersed with canyons. The most dramatic example is the Grand Canyon, but that is one of many dramatic vistas included within the Plateau, which includes spectacular lava formations, painted deserts, sand dunes, and badlands. One of the most distinctive features of the Plateau is its longevity, the Plateau can be divided into six sections, three of which fall into the Southwest region
17.
Gran Chaco
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This land is sometimes called the Chaco Plain. The Gran Chaco is about 647,500 km² in size and it is located west of the Paraguay River and east of the Andes, and is mostly an alluvial sedimentary plain shared among Paraguay, Bolivia and Argentina. It stretches from about 17° to 33° South latitude and between 65° and 60° West longitude, though estimates differ, locals sometimes divide it today by the political borders, giving rise to the terms Argentinian Chaco, Paraguayan Chaco and Bolivian Chaco. The Chaco Boreal may be divided in two, closer to the mountains in the west, the Alto Chaco, sometimes known as Chaco Seco, is very dry and sparsely vegetated. It has an open savanna vegetation consisting of palm trees, quebracho trees and tropical high-grass areas. The landscape is flat and slopes at a 0.004 degree gradient to the east. This area is one of the distinct physiographic provinces of the Parana-Paraguay Plain division. The areas more hospitable to development are along the Paraguay, Bermejo and it is a great source of timber and tannin, which is derived from the native quebracho tree. Special tannin factories have been constructed there, the wood of the palo santo from the Central Chaco is the source of oil of guaiac. Paraguay also cultivates mate in the part of the Chaco. Large tracts of the central and northern Chaco have high fertility, sandy alluvial soils with elevated levels of phosphorus. Soils are generally erosion prone once the forest has been cleared, in the central and northern Paraguay Chaco, occasional dust storms have caused major top soil loss. Prior to national independence of the nations that compose the Chaco, the Gran Chaco had been a disputed territory since 1810. Officially, it was supposed to be part of Argentina, Bolivia and Paraguay, Argentina claimed territories south of the Bermejo River until Paraguays defeat in the War of the Triple Alliance in 1870 established its current border with Argentina. Over the next few decades, Bolivia began to push the natives out and settle in the Gran Chaco, Bolivia sought the Paraguay River for shipping oil out into the sea, and Paraguay claimed ownership of the land. This became the backdrop to The Gran Chaco War between Paraguay and Bolivia over supposed oil in the Chaco Boreal, in the end, no oil was found in the region. Mennonites immigrated into the Paraguayan part of the region from Canada in the 1920s, more came from the USSR in the 1930s and these immigrants created some of the largest and most prosperous municipalities in the deep Gran Chaco. The region is home to nine million people, divided about evenly among Argentina, Bolivia, Brazil
18.
Mediterranean climate
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A Mediterranean climate /ˌmɛdɪtəˈreɪniən/ or dry summer climate, is the climate typical of the lands in the Mediterranean Basin. The Mediterranean climate is characterised by dry summers and mild, moist winters, Mediterranean climate zones are associated with the four large subtropical high pressure cells of the oceans, the Azores High, South Atlantic High, North Pacific High, and South Pacific High. These climatological high pressure cells migrate by latitude according to the angle of the Sun, shifting north-eastward in the summer. These semi-permanent high pressure systems play a role in the formation of the worlds subtropical and tropical deserts as well as the Mediterranean Basins climate. The Azores High is associated with the Mediterranean climate found in the Mediterranean Basin, the Sahara Desert, the South Atlantic High is similarly associated with the Namib Desert and Kalahari Desert, and the Mediterranean climate of the western part of South Africa. Under the Köppen climate classification, hot climates and cool dry-summer climates are often referred to as mediterranean. Under the Köppen climate system, the first letter indicates the climate group, temperate climates or C zones have an average temperature above 0 °C, but below 18 °C, in their coolest months. The second letter indicates the precipitation pattern, Köppen has defined a dry summer month as a month with less than 30 mm of precipitation and with less than one-third that of the wettest winter month. Some, however, use a 40 mm level, the third letter indicates the degree of summer heat, a represents an average temperature in the warmest month above 22 °C, while b indicates the average temperature in the warmest month below 22 °C. Under the Köppen classification, dry-summer climates usually occur on the sides of continents. Under Trewarthas system, at least eight months must have average temperatures of 10 °C or higher, during summer, regions of mediterranean climate are dominated by subtropical high pressure cells, with dry sinking air capping a surface marine layer of varying humidity and making rainfall unlikely. In many Mediterranean climates there is a strong character to daily temperatures in the warm months. The majority of the regions with mediterranean climates have relatively mild winters, however winter and summer temperatures can vary greatly between different regions with a mediterranean climate. Or to consider summer, Athens experiences rather high temperatures in that season, in contrast, San Francisco has cool summers with daily highs around. In North America, areas with Csc climate can be found in the Olympic, Cascade, Klamath and these locations are found at high altitude nearby lower altitude regions characterized by a warm-summer mediterranean climate or hot-summer mediterranean climate. A rare instance of this occurs in the tropics, on Haleakalā Summit in Hawaii. In South America, Csc regions can be found along the Andes in Chile, the town of Balmaceda is one of the few towns confirmed to have this climate. Small areas with a Csc climate can also be found at elevations in Corsica
19.
Temperate climate
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In geography, temperate or tepid latitudes of Earth lie between the tropics and the polar regions. The temperatures in these regions are relatively moderate, rather than extremely hot or cold. The north temperate zone extends from the Tropic of Cancer to the Arctic Circle, the south temperate zone extends from the Tropic of Capricorn to the Antarctic Circle. In some climate classifications, the zone is often divided into several smaller climate zones. These include Humid subtropical climate, Mediterranean climate, oceanic, subtropical climates are located between 23. 5° and 35. 0° north or south latitude on the eastern or leeward sides of landmasses. This climate has long, generally hot, summers and short, mild winters and these climates may occur in southern Asia, the southeastern United States, parts of eastern Australia, and in eastern coastal South America. Mediterranean climates, occur between 30° and 42° north and south latitude, on the sides of landmasses. This climate has hot summers and short mild winters, however, seasonal rainfall is the opposite of that of the subtropical humid type. These climates occur near the rimlands of the Mediterranean Sea, in western Australia, in California, the oceanic climates occur in the higher middle latitudes, between 45° and 60° north and south latitude. They are created by the flow from the cool high latitude oceans to their west. This causes the climate to have cool summers and cool winters, annual rainfall is spread throughout the entire year. Regions with this climate include Western Europe, northwestern North America, the Continental climates occur in middle latitudes, between 35° or 40° to 55°. These climates are normally inland or on sides of landmasses. They feature warm to hot summers and cold winters, with a large temperature variation. Regions with this climate include northern temperate Asia, the northern United States, southern Canada, the vast majority of the worlds human population resides in temperate zones, especially in the northern hemisphere, due to its greater mass of land. The richest temperate flora in the world is found in southern Africa, geographical zone Habitat Köppen climate classification Middle latitudes Polar circle Subtropics
20.
Humid continental climate
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Precipitation is usually well distributed through the year. Some climatologists prefer to use the 0 °C isotherm as it is commonly used. In addition, the location in question must not be semi-arid or arid, humid continental climates tend to be found between latitudes 40° N and 60° N, within the central and northeastern portions of North America, Europe, and Asia. They are much less commonly found in the Southern Hemisphere due to the ocean area at that latitude. More extreme humid continental climates found in southern Siberia and the American Midwest combine hotter summer maxima, climatological averages are used to determine which locations are within a certain climate regime. The World Meteorological Organization has defined this average as through a 30 year period, the version from 1936 utilized a mean temperature of the coldest month of below −3 °C and there must be at least four months whose mean temperatures are at or above 10 °C. In Europe, the −3 °C average temperature isotherm was near the extent of winter snowpack. Many climatologists in the U. S. prefer to use 0 °C as the standard because they feel it better reflects consistency in regional landscapes, the 10 °C average temperature was found to be the minimum temperature necessary for the tree growth. Large temperature ranges are common within this climate zone, in addition, the location in question must not be semi-arid or arid. This is from an update to the climate regime definition introduced by Trewartha & Horn in 1980, despite the 1980 update, climate regimes are essentially the same within the Southern Hemisphere. The largest changes are seen in North America, Europe, under Köppen, the following variants of this climate are possible. The climate regime uses a three letter code, beginning with the letter D. Otherwise, The second letter f , s , A dry summer — the driest summer month has at most 30 millimetres of rainfall and has at most 1⁄3 the precipitation of the wettest winter month. W , A dry winter — the driest winter month has at most one‑tenth of the found in the wettest summer month. The third letter a , Warmest month averages above 22 °C b , Does not meet the requirements for a, within North America, moisture within this climate regime is supplied by the Gulf of Mexico and adjacent western subtropical Atlantic. Snowfall occurs in all areas with a continental climate and in many such places is more common than rain during the height of winter. In places with sufficient wintertime precipitation, the cover is often deep. Most summer rainfall occurs during thunderstorms, and in North America, though humidity levels are often high in locations with humid continental climates, the humid designation means that the climate is not dry enough to be classified as semi-arid or arid. By definition, forests thrive within this climate, biomes within this climate regime include temperate woodlands, temperate grasslands, temperate deciduous, temperature evergreen forests, and coniferous forests
21.
Diurnal temperature variation
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Atmospheric temperature range is the numerical difference between the minimum and maximum values of temperature observed in a given location during a period of time or the average. The variation in temperature occurs from the highs of the day to the cool of nights is called diurnal temperature variation. Average yearly temperature is 22.4 degrees Celsius, ranging from a minimum of 12.2 degrees to a maximum of 29.9 degrees. The average temperature range is 11.4 degrees, variability along the year is small. It is easy to see in the graph another typical phenomenon of temperature ranges, in Campinas, for example, the daily temperature range in July may vary between typically 10 and 24 degrees Celsius, while in January, it may range between 20 and 30 degrees Celsius. The effect of latitude, tropical climate, constant gentle wind and sea-side locations show smaller average temperature ranges, smaller variations of temperature, average maximum yearly temperature is 28.7 degrees Celsius and average minimum is 21.9. The average temperature range is 5.7 degrees only, temperature variation along the year in Aracaju is very damped. Most of the places with these characteristics are located in the transition between temperate and tropical climates, approximately around the tropics, particularly in the Southern hemisphere, the minimum temperature at night does not occur on the ground but few tens of centimeters above the ground. The phenomenon is attributed to the interaction of radiation effects on atmospheric aerosols
22.
San Diego
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San Diego is a major city in California, United States. It is in San Diego County, on the coast of the Pacific Ocean in Southern California, approximately 120 miles south of Los Angeles and immediately adjacent to the border with Mexico. With an estimated population of 1,394,928 as of July 1,2015, San Diego is the eighth-largest city in the United States and second-largest in California. It is part of the San Diego–Tijuana conurbation, the second-largest transborder agglomeration between the US and a country after Detroit–Windsor, with a population of 4,922,723 people. San Diego has been called the birthplace of California, historically home to the Kumeyaay people, San Diego was the first site visited by Europeans on what is now the West Coast of the United States. Upon landing in San Diego Bay in 1542, Juan Rodríguez Cabrillo claimed the area for Spain, the Presidio and Mission San Diego de Alcalá, founded in 1769, formed the first European settlement in what is now California. In 1821, San Diego became part of the newly independent Mexico, in 1850, California became part of the United States following the Mexican–American War and the admission of California to the union. The city is the seat of San Diego County and is the center of the region as well as the San Diego–Tijuana metropolitan area. San Diegos main economic engines are military and defense-related activities, tourism, international trade, the presence of the University of California, San Diego, with the affiliated UCSD Medical Center, has helped make the area a center of research in biotechnology. The original inhabitants of the region are now known as the San Dieguito, the area of San Diego has been inhabited by the Kumeyaay people. The first European to visit the region was Portuguese-born explorer Juan Rodríguez Cabrillo sailing under the flag of Castile, sailing his flagship San Salvador from Navidad, New Spain, Cabrillo claimed the bay for the Spanish Empire in 1542, and named the site San Miguel. In November 1602, Sebastián Vizcaíno was sent to map the California coast, in May 1769, Gaspar de Portolà established the Fort Presidio of San Diego on a hill near the San Diego River. It was the first settlement by Europeans in what is now the state of California, in July of the same year, Mission San Diego de Alcalá was founded by Franciscan friars under Junípero Serra. By 1797, the mission boasted the largest native population in Alta California, with over 1,400 neophytes living in, Mission San Diego was the southern anchor in California of the historic mission trail El Camino Real. Both the Presidio and the Mission are National Historic Landmarks, in 1821, Mexico won its independence from Spain, and San Diego became part of the Mexican territory of Alta California. In 1822, Mexico began attempting to extend its authority over the territory of Alta California. The fort on Presidio Hill was gradually abandoned, while the town of San Diego grew up on the land below Presidio Hill. The Mission was secularized by the Mexican government in 1833, the 432 residents of the town petitioned the governor to form a pueblo, and Juan María Osuna was elected the first alcalde, defeating Pío Pico in the vote
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Patos
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Patos is a municipality in the state of Paraíba in the Northeast Region of Brazil. Its population is 104716 inhabitants, esporte and Nacional are the two citys football clubs, They play in Municipal Stadium José Cavalcanti. There are four multisports gyms, the Rivaldão, AABB, Sesc, the city of Patos experiences a tropical hot semi-arid climate with a short rainy season from February to April. Conversely, the dry season dominates the majority of the year. The wettest month is March with a monthly total of 213 mm of precipitation. List of municipalities in Paraíba Media related to Patos at Wikimedia Commons CPRM – Serviço Geológico do Brasil Prefeitura Municipal de Patos FAMUP
24.
Brazil
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Brazil, officially the Federative Republic of Brazil, is the largest country in both South America and Latin America. As the worlds fifth-largest country by area and population, it is the largest country to have Portuguese as an official language. Its Amazon River basin includes a vast tropical forest, home to wildlife, a variety of ecological systems. This unique environmental heritage makes Brazil one of 17 megadiverse countries, Brazil was inhabited by numerous tribal nations prior to the landing in 1500 of explorer Pedro Álvares Cabral, who claimed the area for the Portuguese Empire. Brazil remained a Portuguese colony until 1808, when the capital of the empire was transferred from Lisbon to Rio de Janeiro, in 1815, the colony was elevated to the rank of kingdom upon the formation of the United Kingdom of Portugal, Brazil and the Algarves. Independence was achieved in 1822 with the creation of the Empire of Brazil, a state governed under a constitutional monarchy. The ratification of the first constitution in 1824 led to the formation of a bicameral legislature, the country became a presidential republic in 1889 following a military coup détat. An authoritarian military junta came to power in 1964 and ruled until 1985, Brazils current constitution, formulated in 1988, defines it as a democratic federal republic. The federation is composed of the union of the Federal District, the 26 states, Brazils economy is the worlds ninth-largest by nominal GDP and seventh-largest by GDP as of 2015. A member of the BRICS group, Brazil until 2010 had one of the worlds fastest growing economies, with its economic reforms giving the country new international recognition. Brazils national development bank plays an important role for the economic growth. Brazil is a member of the United Nations, the G20, BRICS, Unasul, Mercosul, Organization of American States, Organization of Ibero-American States, CPLP. Brazil is a power in Latin America and a middle power in international affairs. One of the worlds major breadbaskets, Brazil has been the largest producer of coffee for the last 150 years and it is likely that the word Brazil comes from the Portuguese word for brazilwood, a tree that once grew plentifully along the Brazilian coast. In Portuguese, brazilwood is called pau-brasil, with the word brasil commonly given the etymology red like an ember, formed from Latin brasa and the suffix -il. As brazilwood produces a red dye, it was highly valued by the European cloth industry and was the earliest commercially exploited product from Brazil. The popular appellation eclipsed and eventually supplanted the official Portuguese name, early sailors sometimes also called it the Land of Parrots. In the Guarani language, a language of Paraguay, Brazil is called Pindorama
25.
Jaipur
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Jaipur is the capital and largest city of the Indian state of Rajasthan in Northern India. It was founded on 18 November 1726 by Maharaja Jai Singh II, as of 2011, the city has a population of 3.1 million, making it the tenth most populous city in the country. Jaipur is also known as the Pink City of India, Jaipur is located 260 km from the Indian capital New Delhi. Jaipur forms a part of the west Golden Triangle tourist circuit along with Agra, Jaipur is a popular tourist destination in India and serves as a gateway to other tourist destinations in Rajasthan such as Jodhpur, Jaisalmer Udaipur. and Mount Abu. The city of Jaipur was founded in 1726 by Jai Singh II and he planned to shift his capital from Amer,11 km from Jaipur to accommodate the growing population and increasing scarcity of water. Jai Singh consulted several books on architecture and architects while planning the layout of Jaipur, under the architectural guidance of Vidyadhar Bhattacharya, Jaipur was planned based on the principles of Vastu shastra and Shilpa Shastra. The construction of the city began in 1726 and took four years to complete the major roads, the city was divided into nine blocks, two of which contained the state buildings and palaces, with the remaining seven allotted to the public. Huge ramparts were built, pierced by seven fortified gates, during the rule of Sawai Ram Singh, the city was painted pink to welcome the Prince of Wales, later Edward VII, in 1876. Many of the avenues remained painted in pink, giving Jaipur a distinctive appearance, in the 19th century, the city grew rapidly and by 1900 it had a population of 160,000. The wide boulevards were paved and its industries were the working of metals and marble. The city had three colleges, including a Sanskrit college and a school opened during the reign of the Maharaja Ram Singh II. Temperatures remain relatively high during summer from April to early July having average daily temperatures of around 30 °C, during the monsoon there are frequent, heavy rains and thunderstorms, but flooding is not common. The winter months of November to February are mild and pleasant, with temperatures ranging from 10–15 °C and with little or no humidity. The city was planned according to Indian Vastu shastra by Vidyadhar Bhattacharya in 1727, there are three gates facing east, west, and north. The eastern gate is called Suraj pol, the gate is called Chand pol. The city is unusual among pre-modern Indian cities in the regularity of its streets, the urban quarters are further divided by networks of gridded streets. Five quarters wrap around the east, south, and west sides of a central palace quarter, the Palace quarter encloses the Hawa Mahal palace complex, formal gardens, and a small lake. Nahargarh Fort, which was the residence of the King Sawai Jai Singh II, according to provisional report of 2011 census, Jaipur city had a population of 3,073,350
26.
India
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India, officially the Republic of India, is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and it is bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast. It shares land borders with Pakistan to the west, China, Nepal, and Bhutan to the northeast, in the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives. Indias Andaman and Nicobar Islands share a border with Thailand. The Indian subcontinent was home to the urban Indus Valley Civilisation of the 3rd millennium BCE, in the following millennium, the oldest scriptures associated with Hinduism began to be composed. Social stratification, based on caste, emerged in the first millennium BCE, early political consolidations took place under the Maurya and Gupta empires, the later peninsular Middle Kingdoms influenced cultures as far as southeast Asia. In the medieval era, Judaism, Zoroastrianism, Christianity, and Islam arrived, much of the north fell to the Delhi sultanate, the south was united under the Vijayanagara Empire. The economy expanded in the 17th century in the Mughal empire, in the mid-18th century, the subcontinent came under British East India Company rule, and in the mid-19th under British crown rule. A nationalist movement emerged in the late 19th century, which later, under Mahatma Gandhi, was noted for nonviolent resistance, in 2015, the Indian economy was the worlds seventh largest by nominal GDP and third largest by purchasing power parity. Following market-based economic reforms in 1991, India became one of the major economies and is considered a newly industrialised country. However, it continues to face the challenges of poverty, corruption, malnutrition, a nuclear weapons state and regional power, it has the third largest standing army in the world and ranks sixth in military expenditure among nations. India is a constitutional republic governed under a parliamentary system. It is a pluralistic, multilingual and multi-ethnic society and is home to a diversity of wildlife in a variety of protected habitats. The name India is derived from Indus, which originates from the Old Persian word Hindu, the latter term stems from the Sanskrit word Sindhu, which was the historical local appellation for the Indus River. The ancient Greeks referred to the Indians as Indoi, which translates as The people of the Indus, the geographical term Bharat, which is recognised by the Constitution of India as an official name for the country, is used by many Indian languages in its variations. Scholars believe it to be named after the Vedic tribe of Bharatas in the second millennium B. C. E and it is also traditionally associated with the rule of the legendary emperor Bharata. Gaṇarājya is the Sanskrit/Hindi term for republic dating back to the ancient times, hindustan is a Persian name for India dating back to the 3rd century B. C. E. It was introduced into India by the Mughals and widely used since then and its meaning varied, referring to a region that encompassed northern India and Pakistan or India in its entirety
27.
Niamey
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Niamey is the capital and largest city of the West African country Niger. Niamey lies on the Niger River, primarily situated on the east bank and it is an administrative, cultural and economic centre. Niameys population, which was estimated at 774,235 in 2006, is now projected to be much higher, the city is located in a pearl millet growing region, while manufacturing industries include bricks, ceramic goods, cement and weaving. Niamey was probably founded in the century, but was of little importance to most of the country until the French developed a colonial post in the 1890s. This rapidly grew into an important centre, in 1926 it became the capital of Niger, and the population gradually increased, from about 3,000 in 1930 to around 30,000 in 1960. The period from 1970 to 1988 was one in which the economy of Niger boomed, in this period, the population of Niamey grew from 108,000 to 398,365 inhabitants. The city expanded from 1,367 hectares in 1970 to 4,400 hectares by 1977, by some estimates the population had reached 800,000 in 2000. In 2011, government press estimated the urban population at over 1.5 million. A major cause of the increase has been in migration for work and during droughts and this last factor means a majority of the citys citizens are youths. Covering an area of over 250 km2, the area sits atop two plateaus reaching 218 m in altitude, bisected by the Niger River. At Niamey, the river, running almost straight SSE from Gao, the city was founded on the east of the river as it meanders from a west to east flow to run almost directly south. A series of marshy islands begin at Niamey and extend south in the river, most of the rainfall is from late June to mid-August. There is practically no rain from mid-October to April, Niamey is remarkably hot throughout the year. In fact, it is one of the hottest major cities on the planet, average monthly high temperatures reach 38 °C four months out of the year and in no month do average high temperatures fall below 32 °C. During the dry season, particularly from November through February, nights are generally cool, average nighttime lows between November and February range from 14–18 °C. Under the military government of General Seyni Kountché, there were controls on residency. Noticeable in the centre since the 1980s are groups of poor, young. Within the richer or more trafficked neighbourhoods, these beggars have in fact formed a well-regulated hierarchical system in which beggars garner sadaka according to cultural and religious norms
28.
Niger
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Niger, officially the Republic of Niger, is a landlocked country in Western Africa, named after the Niger River. Niger is bordered by Libya to the northeast, Chad to the east, Nigeria and Benin to the south, Burkina Faso and Mali to the west, and Algeria to the northwest. Niger covers a area of almost 1,270,000 km2, making it the largest country in West Africa. The countrys predominantly Islamic population of about 19 million is mostly clustered in the far south, the capital city is Niamey, located in the far-southwest corner of Niger. Niger is a country, and is consistently one of the lowest-ranked in the United Nations Human Development Index. Much of the portions of the country are threatened by periodic drought. The economy is concentrated around subsistence and some export agriculture clustered in the fertile south. Nigerien society reflects a diversity drawn from the long independent histories of its ethnic groups and regions. Historically, what is now Niger has been on the fringes of large states. Since independence, Nigeriens have lived under five constitutions and three periods of military rule, following a military coup in 2010, Niger has become a democratic, multi-party state. A majority live in areas, and have little access to advanced education. Early human settlement in Niger is evidenced by archaeological remains. In prehistoric times, the climate of the Sahara was wet and provided favorable conditions for agriculture, in 2005–06, a graveyard in the Tenere desert was discovered by Paul Sereno, a paleontologist from the University of Chicago. His team discovered 5, 000-year-old remains of a woman and two children in the Tenere Desert, the evidence along with remains of animals that do not typically live in desert are among the strongest evidence of the green Sahara in Niger. It is believed that progressive desertification around 5000 BCE pushed sedentary populations to the south and south-east. By at least the 5th century BCE, Niger became an area of trade, led by the Berber tribes from the north. This trade has made Agadez a pivotal place of the trans-Saharan trade and this mobility, which would continue in waves for several centuries, was accompanied with further migration to the south and interbreeding between southern black and northern white populations. It was also aided by the introduction of Islam to the region at the end of the 7th century, several empires and kingdoms also flourished during this era up to the beginning of colonization in Africa
29.
Deutscher Wetterdienst
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It is attached to the Federal Ministry of Transport and Digital Infrastructure. The DWDs principal tasks include warning against weather-related dangers and monitoring and rating climate changes affecting Germany, the organization runs atmospheric models on their supercomputer for precise weather forecasting. The DWD also manages the national archive and one of the largest specialized libraries on weather. The DWD was formed in 1952 when the services of the western occupation zones were merged. In 1954, the Federal Republic of Germany joined the World Meteorological Organization, in 1975 the European Centre for Medium-Range Weather Forecasts was formed for numerical weather prediction up to ten days in advance. In 1990, following the reunification, the services of the German Democratic Republic were incorporated in the DWD. Since the 1990s, the DWD has continuously reduced the number of manned weather stations, the DWD does not expect a reduction in forecast quality, given techniques like weather radar or satellites, which have significantly improved weather data collection. The German Meteorological Office runs a global model of its own. They developed the High Resolution Regional Model in 1999, which is run within the operational and research meteorological communities. The German non-hydrostatic Lokal-Modell for Europe has been run since 2002, since March 2009, the DWD operates a NEC SX-9 with a peak performance of 109 teraFLOPS to help in the weather forecasting process. Since 2005, the DWD has been publishing regional warnings against heat with the aim to reduce heat related fatalities and this decision was made because of the hot summer in 2003, when estimated 7000 people died from direct or indirect effects of the heat. Additionally it sends out sea weather reports as radioteletype and faxes, since 2006, the pollen warnings can be subscribed to for free on the DWD web site. Within its duty of primary meteorological information, the DWD offers a daily weather report for Germany which can be subscribed to by email on their official website. DWD offers free access to its climate data and its work is based on the German Meteorological Office Act. Currently, the DWD consists of roughly 2600 occupants, besides the DWD central in Offenbach, there are regional centers in Hamburg, Potsdam, Leipzig, Essen, Stuttgart and Munich
30.
Murcia
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The population of the metropolitan area was 689,591 in 2010. It is located on the Segura River, in the Southeast of the Iberian Peninsula, noted by a climate with hot summers, mild winters, and relatively low precipitation. Murcia was founded by the emir of Cordoba Abd ar-Rahman II in 825 with the name Mursiyah مرسية and nowadays is mainly a services city and a university town. The city, as the capital of the comarca Huerta de Murcia is called Europes orchard due to its agricultural tradition and its fruit, vegetable. Murcia is located near the center of a fertile plain known as the huerta of Murcia. The Segura River and its tributary, the Guadalentín, run through the area. The city has an elevation of 43 metres above sea level, the best known and most dominant aspect of the municipal areas landscape is the orchard. A large regional park, the Parque Regional de Carrascoy y el Valle, the Segura River crosses an alluvial plain, part of a Mediterranean pluvial system. The river crosses the city from west to east and its volumetric flow is mostly small but the river is known to produce occasional flooding, like those that inundated the capital in 1946,1948,1973 or 1989. The Segura was recognized as one of the most polluted rivers in Europe, the Segura rivers Valley is surrounded by two mountain ranges, the hills of Guadalupe, Espinardo, Cabezo de Torres, Esparragal and Monteagudo in the north and the Cordillera Sur in the south. The municipality itself is divided into southern and northern zones by a series of mountain ranges and these two zones are known as Field of Murcia and Orchard of Murcia. Near the plains center, the hill of Monteagudo protrudes dramatically. The 881. 86-square-kilometre territory of Murcias municipality is made up of 54 pedanías and 28 barrios, the barrios make up the 12. 86-square-kilometre the main urban portion of the city. The historic city center is approximately 3 square kilometres of the downtown portion of Murcia. Murcia has a hot semi-arid climate, given its proximity to the Mediterranean Sea, it has mild winters and hot summers. It averages more than 320 days of sun per year, occasionally, Murcia has heavy rains where the precipitation for the entire year will fall over the course of a few days. In the coldest month, January, the temperature range is a high of 16.6 °C during the day. In the warmest month, August, the range goes from 34.2 °C during the day to 20.9 °C at night, temperatures almost always reach or exceed 40 °C on at least one or two days per year
31.
Spain
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By population, Spain is the sixth largest in Europe and the fifth in the European Union. Spains capital and largest city is Madrid, other urban areas include Barcelona, Valencia, Seville, Bilbao. Modern humans first arrived in the Iberian Peninsula around 35,000 years ago, in the Middle Ages, the area was conquered by Germanic tribes and later by the Moors. Spain is a democracy organised in the form of a government under a constitutional monarchy. It is a power and a major developed country with the worlds fourteenth largest economy by nominal GDP. Jesús Luis Cunchillos argues that the root of the span is the Phoenician word spy. Therefore, i-spn-ya would mean the land where metals are forged, two 15th-century Spanish Jewish scholars, Don Isaac Abravanel and Solomon ibn Verga, gave an explanation now considered folkloric. Both men wrote in two different published works that the first Jews to reach Spain were brought by ship by Phiros who was confederate with the king of Babylon when he laid siege to Jerusalem. This man was a Grecian by birth, but who had given a kingdom in Spain. He became related by marriage to Espan, the nephew of king Heracles, Heracles later renounced his throne in preference for his native Greece, leaving his kingdom to his nephew, Espan, from whom the country of España took its name. Based upon their testimonies, this eponym would have already been in use in Spain by c.350 BCE, Iberia enters written records as a land populated largely by the Iberians, Basques and Celts. Early on its coastal areas were settled by Phoenicians who founded Western Europe´s most ancient cities Cadiz, Phoenician influence expanded as much of the Peninsula was eventually incorporated into the Carthaginian Empire, becoming a major theater of the Punic Wars against the expanding Roman Empire. After an arduous conquest, the peninsula came fully under Roman Rule, during the early Middle Ages it came under Germanic rule but later, much of it was conquered by Moorish invaders from North Africa. In a process took centuries, the small Christian kingdoms in the north gradually regained control of the peninsula. The last Moorish kingdom fell in the same year Columbus reached the Americas, a global empire began which saw Spain become the strongest kingdom in Europe, the leading world power for a century and a half, and the largest overseas empire for three centuries. Continued wars and other problems led to a diminished status. The Napoleonic invasions of Spain led to chaos, triggering independence movements that tore apart most of the empire, eventually democracy was peacefully restored in the form of a parliamentary constitutional monarchy. Spain joined the European Union, experiencing a renaissance and steady economic growth
32.
Reno, Nevada
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Reno is a city in the U. S. state of Nevada. It is in Northern Nevada, approximately 22 miles from Lake Tahoe, known as The Biggest Little City in the World, Reno is famous for its casinos and as the birthplace of Caesars Entertainment Corporation. It is the county seat of Washoe County, in the part of the state. The city sits in a desert at the foot of the Sierra Nevada. Archaeological finds place the border for the prehistoric Martis people in the Reno area. As early as the mid 1850s a few settled in the Truckee Meadows. Gold was discovered in the vicinity of Virginia City in 1850, and a modest mining community developed, to provide the necessary connection between Virginia City and the California Trail, Charles W. Fuller built a log toll bridge across the Truckee River in 1859. A small community that would service travelers soon grew up near the bridge, after two years, Fuller sold the bridge to Myron C. Lake, who continued to develop the community with the addition of a grist mill, kiln, in 1864, Washoe County was consolidated with Roop County, and Lakes Crossing became the largest town in the county. Lake had earned himself the founder of Reno. Lake deeded land to the CPRR in exchange for its promise to build a depot at Lakes Crossing, once the railroad station was established, the town of Reno officially came into being on May 9,1868. CPRR construction superintendent Charles Crocker named the community after Major General Jesse Lee Reno, in 1871, Reno became the county seat of the newly expanded Washoe County, replacing the previous county seat, located in Washoe City. However, political power in Nevada remained with the communities, first Virginia City and later Tonopah. The extension of the Virginia and Truckee Railroad to Reno in 1872 provided a boost to the new citys economy. Despite this, Nevada is still the third-largest gold producer in the world, after South Africa and Australia, the Reno Arch was erected on Virginia Street in 1926 to promote the upcoming Transcontinental Highways Exposition of 1927. The arch included the words Nevadas Transcontinental Highways Exposition and the dates of the exposition. After the exposition, the Reno City Council decided to keep the arch as a permanent downtown gateway, no acceptable slogan was received until a $100 prize was offered, and G. A. Burns of Sacramento was declared the winner on March 14,1929, with Reno, The Biggest Little City in the World
33.
National Oceanic and Atmospheric Administration
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The National Oceanic and Atmospheric Administration is an American scientific agency within the United States Department of Commerce focused on the conditions of the oceans and the atmosphere. NOAA warns of dangerous weather, charts seas, guides the use and protection of ocean and coastal resources, and conducts research to improve understanding and stewardship of the environment. In addition to its employees, over 11,000 as of 2015, NOAA research. NOAA plays several roles in society, the benefits of which extend beyond the U. S. economy and into the larger global community. NOAA supplies information to its customers and partners pertaining to the state of the oceans and this is clearly manifest in the production of weather warnings and forecasts through the National Weather Service, but NOAAs information products extend to climate, ecosystems, and commerce as well. A Provider of Environmental Stewardship Services, NOAA is also the steward of U. S. coastal and marine environments. A Leader in Applied Scientific Research, the five fundamental activities are, Monitoring and observing Earth systems with instruments and data collection networks. Understanding and describing Earth systems through research and analysis of that data, assessing and predicting the changes of these systems over time. Engaging, advising, and informing the public and partner organizations with important information, managing resources for the betterment of society, economy and environment. NOAA formed a conglomeration of several existing agencies that were among the oldest in the federal government, NOAA was established within the Department of Commerce via the Reorganization Plan No.4 of 1970. In 2007 NOAA celebrated 200 years of service with its ties to the United States Coast, the NOAA Commissioned Officer Corps is a uniformed service of men and women who operate NOAA ships and aircraft, and serve in scientific and administrative posts. And in addition more than a dozen staff offices, including the Office of the Federal Coordinator for Meteorology, the NOAA Central Library and this is done through a collection of national and regional centers,13 river forecast centers, and more than 120 local weather forecast offices. They are charged with issuing weather and river forecasts, advisories, watches and they issue more than 734,000 weather and 850,000 river forecasts, and more than 45,000 severe weather warnings annually. NOAA data is relevant to the issues of global warming. The NWS operates NEXRAD, a network of Doppler weather radars which can detect precipitation. Many of their products are broadcast on NOAA Weather Radio, a network of transmitters that broadcasts weather forecasts, severe weather statements, watches. The National Ocean Service focuses on ensuring that ocean and coastal areas are safe, healthy, in 1960 TIROS-1, NOAAs first owned and operated geostationary satellite was launched. Since 1966 NESDIS has managed polar orbiting satellites and since 1974 it has operated geosynchronous satellites, in 1979 NOAAs first polar-orbiting environmental satellite was launched
34.
Continental climate
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In the Köppen climate system, Continental climates were bordered to the south by Temperate climates or C climates and to the north by Boreal climate or E climates. Köppen also defined continental climates as having more than 30 days with continuous snowcover on the ground, Continental climates often have a significant annual variation in temperature. They tend to occur in the latitudes, where prevailing winds come from over land. Continental climates occur mostly in the Northern Hemisphere which has the large landmasses required for this type of climate to develop, most of northern and northeastern China, eastern and southeastern Europe, and the central and upper eastern United States have this type of climate. In Continental climates, Precipitation tends to be moderate in amount, a portion of the annual precipitation falls as snowfall, and snow often remains on the ground for more than a month. Summers in continental climates can feature thunderstorms and frequent cool temperatures, the timing of intermediate spring-like or autumn-like temperatures in this zone vary depending on latitude and/or elevation. For example, spring may arrive as soon as early March in the parts of this zone. Annual precipitation in this zone is usually between 600 millimetres and 1,200 millimetres, most of it in the form of snow during winter and it also has cold winters and warm summers. Most such areas fit Köppen classifications of Dfa, Dwa or Dfb or Dwb, dry summer continental climates exist in high altitude areas near Mediterranean climates. In some cases, the climate classification of BSk can also be considered to be continental as long it has cold winter. Some climatologists use the 0 °C isotherm instead for the coldest month, Continental climates exist where cold air masses infiltrate during the winter and warm air masses form in summer under conditions of high sun and long days. Places with continental climates are as a rule either far from any moderating effects of oceans or are so situated that prevailing winds tend to head offshore. Such regions get quite warm in the summer, achieving temperatures characteristic of tropical climates but are colder than any other climates of similar latitude in the winter. These climates grade off toward subtropical climates equator-ward where winters are less severe, in Europe these climates may grade off into oceanic climates in which the influence of moderating air masses is more marked toward the west. The subarctic climate, with cold, long and dry winters. Canada, Throughout much of southern Canada from the Rocky Mountains to Atlantic Canada, major cities, Whistler, Prince George, Kamloops, Calgary, Edmonton, Fort McMurray, Saskatoon, Regina, Winnipeg, Kenora, Thunder Bay, Sault Ste
35.
Dust Bowl
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The drought came in three waves,1934,1936, and 1939–1940, but some regions of the high plains experienced drought conditions for as many as eight years. During the drought of the 1930s, the unanchored soil turned to dust, which the prevailing winds blew away in huge clouds that sometimes blackened the sky. These choking billows of dust – named black blizzards or black rollers – traveled cross country, reaching as far as the East Coast and striking such cities as New York City and Washington, on the Plains, they often reduced visibility to 1 metre or less. While the term the Dust Bowl was originally a reference to the area affected by the dust, today it is usually used to refer to the event. The drought and erosion of the Dust Bowl affected 100,000,000 acres that centered on the panhandles of Texas and Oklahoma and touched adjacent sections of New Mexico, Colorado, the Dust Bowl forced tens of thousands of families to abandon their farms. The Dust Bowl area lies principally west of the 100th meridian on the High Plains, elevation ranges from 2,500 feet in the east to 6,000 feet at the base of the Rocky Mountains. The area is semiarid, receiving less than 20 inches of rain annually, the region is also prone to extended drought, alternating with unusual wetness of equivalent duration. During wet years, the soil provides bountiful agricultural output. The region is subject to high winds. During early European and American exploration of the Great Plains, this region was thought unsuitable for European-style agriculture, the lack of surface water and timber made the region less attractive than other areas for pioneer settlement and agriculture. The federal government encouraged settlement and development of the Plains for agriculture via the Homestead Act of 1862, an unusually wet period in the Great Plains mistakenly led settlers and the federal government to believe that rain follows the plow and that the climate of the region had changed permanently. Waves of European settlers arrived in the plains at the beginning of the 20th century, a return of unusually wet weather seemingly confirmed a previously held opinion that the formerly semiarid area could support large-scale agriculture. At the same time, technological improvements such as mechanized plowing, for example, in the Llano Estacado of eastern New Mexico and northwestern Texas, the area of farmland was doubled between 1900 and 1920, then tripled again between 1925 and 1930. The agricultural methods favored by farmers during this period created the conditions for large-scale erosion under certain environmental conditions, when severe drought struck the Great Plains region in the 1930s, it resulted in erosion and loss of topsoil because of farming practices at the time. The drought dried the topsoil and over time it became friable, without the indigenous grasses in place, the high winds that occur on the plains picked up the topsoil and created the massive dust storms that marked the Dust Bowl period. The persistent dry weather caused crops to fail, leaving the plowed fields exposed to wind erosion, the fine soil of the Great Plains was easily eroded and carried east by strong continental winds. On November 11,1933, a very strong dust storm stripped topsoil from desiccated South Dakota farmlands in just one of a series of severe dust storms that year. Beginning on May 9,1934, a strong, two-day dust storm removed massive amounts of Great Plains topsoil in one of the worst such storms of the Dust Bowl, the dust clouds blew all the way to Chicago, where they deposited 12 million pounds of dust
36.
Goyder's Line
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Goyders Line is a line that runs roughly east-west across South Australia and, in effect, joins places with an average annual rainfall of 10 inches. North of Goyders Line, annual rainfall is too low to support cropping. Related to that, the line also marks a change in vegetation. To the south, it is composed mainly of mallee scrub, with barely 30 years knowledge of this new country, farmers needed reliable information about the climate and growing conditions. In 1865 George Goyder, the then Surveyor-General of the colony, was asked to map the boundary between areas that received good rainfall and those experiencing drought. After traversing an estimated 3200 km on horseback in November 1865, he submitted his report, the map included a line of demarcation, the areas north of which being those Goyder judged liable to drought, with the areas to the south deemed arable. He discouraged farmers from planting crops north of his line, declaring this land only for light grazing. Ample rains fell in 1865, prompting farmers to ignore Goyders report and settle in the north, starting farms, the idea that rain follows the plow, developed during the contemporaneous westward expansion of cropping in the United States, encouraged this trend. A few years later, many had to abandon their properties, the land was indeed unsuitable for crops, and Goyder was proved correct. Many farmhouse ruins can still be seen in the vicinity of Goyders line, there were other periods of development north of the line but, invariably, adverse conditions proved decisive. Entire towns and farms were abandoned when there was a return to average rainfall patterns. The line has proven highly accurate, a feat given the relatively limited knowledge of the local climate at the time it was surveyed. Goyders Line starts on the west coast near Ceduna and runs south-east across the Eyre Peninsula to strike Spencer Gulf near Arno Bay. It continues from near Moonta north to Crystal Brook and Orroroo, then south-east past Peterborough and Burra to the Victorian border near Pinnaroo, agriculture is possible north of the line near the Murray River, only because of irrigation using water drawn from the river. When flying over the area, the change in flora makes it possible to see the approximate path of Goyders Line. Goyders Line became a National Trust of Australia Heritage Icon in 2003, the Goyder Line was also mentioned in the Redgum song Virgin Ground from the 1980 album of the same name, and in the song Spark of the Heart, from their 1984 album Frontline. Dust Bowl Pallisers Triangle Semi-arid climate Readers Digest Illustrated Guide to Australian Places, on The Margins Of The Good Earth, The South Australian Wheat Frontier, 1869-1884. History Trust of South Australia, Government of South Australia, photograph of a memorial cairn commemorating Goyders Line
37.
Palliser's Triangle
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The soil in this area is dark brown or black in colour and is very nutrient-rich. The semi-arid conditions, however, initially made this difficult to farm. The area was named after John Palliser, the leader of the 1857–1859 survey expedition to Canadas west, Palliser discovered it was a dry land with no trees, thus, he thought it would be unsuitable for growing crops. A few years later John Macoun, a government official, argued that it would be good for growing wheat, the triangle began to be settled and farmed at the start of the 20th century. For many years this area was attractive to ranching. The sandy soil, grassy land cover, and dry weather supported cattle grazing, and although precipitation was light, many U. S. ranchers would bring herds north to graze in the triangle. By 1912, however, much of the land was overgrazed, for a time yields were high, but a combination of the dry conditions and poor agricultural practices turned the area into a Dust Bowl in the 1930s, helping plunge Canada into the Great Depression. Modern farming techniques and a series of rainy years helped to reestablish the area as an important farming region, however, the north edge of the triangle contains black soil, Farms around Edmonton and Saskatoon are especially notable as good crop land. Although Pallisers Triangle designated land that was lacking of resources for settlement, the significance of the fertile belt was that this was a region rich with agriculture soil that would allow for settlement to flourish. Geography of Alberta Geography of Saskatchewan Geography of Manitoba Canadian Prairies Aspen parkland Shortgrass prairie Great Plains Steppe Calgary & Southern Alberta - Pallisers Triangle
38.
Ustic
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Ustic is a class of soil moisture regime. It is one of a range of different soil moisture regimes, such as, aquic moisture regime, aridic moisture regime, udic moisture regime, the ustic moisture regime is intermediate between the aridic regime and the udic regime. The ustic moisture regime applies to soils in which moisture is present, a suborder of Mollisol, the ustic moisture regime is wetter than the aridic moisture regime and drier than the udic moisture regime. For a soil to be classified as ustic, averaged across the year, the ustic moisture regime is common in semi-arid and sub-humid climates. The soil moisture control section of soil is dry, in some or most parts. Ustic soil is also moist, in parts, for more than 180 cumulative or 90 consecutive days per year. Although it is not dry in all parts for more than half of these cumulative days, regions with an ustic soil moisture regime often experience erratic rainfall which mostly occurs during the growing season. Summer droughts are erratic, but frequent, Ustolls are the most commonly occurring suborder of Mollisols in the U. S. primarily located in the southern Great Plains, New Mexico, Texas, and Oklahoma. Most Ustolls display an accumulation of calcium carbonate in the soil profile - a calcic horizon, the ustic soil moisture regime is also common in Central Africa, in India, and in some countries of Eastern Europe and South America. Soil Moisture regimes affects soil genesis, and the usage and maintenance of soil condition, so they are used as a soil classification criterion for soils with similar properties and morphology. The following are the four other major soil moisture regimes, Aquic Soils that have the aquic moisture regime are virtually free of dissolved oxygen because they are saturated by water. To have a moisture regime, a soil must be saturated for at least a few days a year. The level of ground water fluctuates with the seasons, it is highest in the season or in fall, winter. Udic The soil moisture control section is not dry in any part for around 90 days in the udic moisture regime. Soils that have a moisture regime commonly occur in areas of humid climates that have well distributed rainfall, i. e. they have adequate summer or winter rains. Soils that have a moisture regime normally occur in an arid or a semi-arid climate. Xeric The xeric moisture regime is the typical moisture regime in areas where winters are cool and moist and summers are warm, the soil moisture control section is dry in summer and moist in winter in all parts for 45 or more consecutive days in 4 months. The mean annual temperature of the soil is lower than 22 °C, a principle characteristic of ustic soil is that it is preferable for the cultivation of crops that are tolerant, albeit resistant, to periods of drought
39.
Wave height
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In fluid dynamics, the wave height of a surface wave is the difference between the elevations of a crest and a neighbouring trough. Wave height is a used by mariners, as well as in coastal, ocean. At sea, the significant wave height is used as a means to introduce a well-defined and standardized statistic to denote the characteristic height of the random waves in a sea state. It is defined in such a way that it corresponds to what a mariner observes when estimating visually the average wave height. For a sine wave, the wave height H is twice the amplitude, for a periodic wave it is simply the difference between the maximum and minimum of the surface elevation z = η, H = max − min, with cp the phase speed of the wave. The sine wave is a case of a periodic wave. For this to be possible, it is necessary to first split the time series of the surface elevation into individual waves. Commonly, a wave is denoted as the time interval between two successive downward-crossings through the average surface elevation. Then the individual wave height of each wave is again the difference between maximum and minimum elevation in the interval of the wave under consideration. Only the highest one-third is used, since this corresponds best with visual observations of experienced mariners, eyes, Significant wave height Hm0, defined in the frequency domain, is used both for measured and forecasted wave variance spectra. In case of a measurement, the standard deviation ση is the easiest and most accurate statistic to be used, sea state Significant wave height Wind wave
40.
Tropical rainforest climate
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A tropical rainforest climate, also known as an equatorial climate, is a tropical climate usually found along the equator. Regions with this climate typically feature tropical rainforests, and it is designated Af by the Köppen climate classification. One day in an equatorial climate can be similar to the next. A tropical rainforest is found at latitudes within 10 degrees North and South of the equator. The climate is most commonly found in South America, Central Africa, however, tropical rainforest microclimates are found in many other regions, while not everywhere along the equatorial region features a tropical rainforest climate. Additionally, while tropical rainforest climates are located near the equator. For instance, Santos, Brazil and Fort Lauderdale, United States are not only far removed from the equator, yet both of these cities feature a tropical rainforest climate, albeit with noticeably cooler and warmer periods of the year
41.
Tropical monsoon climate
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Tropical monsoon climates have monthly mean temperatures above 18 °C in every month of the year and feature wet and dry seasons, as Tropical savanna climates do. Tropical monsoon climates however features its driest month seeing on average less than 60 mm and this latter fact is in direct contrast to a tropical savanna climate, whose driest month sees less than 60 mm of precipitation and also less than 100 – of precipitation. In essence, a monsoon climate tends to either see more rainfall than a tropical savanna climate or have less pronounced dry seasons. Additionally, a monsoon climate tends to see less variance in temperatures during the course of the year than a tropical savanna climate. This climate has a driest month which nearly always occurs at or soon after the winter solstice for that side of the equator, there are generally two versions of a tropical monsoon climate, Less pronounced dry seasons. Regions with this variation of the monsoon climate typically see copious amounts of rain during the wet season. However, unlike most tropical climates, a sizeable amount of precipitation also falls during the dry season. In essence, this version of the monsoon climate generally has less pronounced dry seasons than tropical savanna climates. Extraordinarily rainy wet seasons and pronounced dry seasons and this variation features pronounced dry seasons similar in length and character to dry seasons observed in tropical savanna climates. However, this is followed by a period of extraordinary rainfall. In some instances, up to 1,000 mm of precipitation is observed per month for two or more consecutive months, Tropical savanna climates generally do not see this level of sustained rainfall. Tropical monsoon climates are most commonly found in South and Central America, however, there are sections of South Asia, Southeast Asia, Africa, the Caribbean and North America that also feature this climate. The major controlling factor over a tropical climate is its relationship to the monsoon circulation. The monsoon is a change in wind direction. In Asia, during the summer there is a flow of air. In the “winter” an offshore air flow is prevalent, the change in direction is due to the difference in the way water and land heat. October is the hottest month no matter whether is it in the southern or northern hemisphere and this is because October is the shoulder season of the year as if it is the end of the wet season and no winter winds blowing. Changing pressure patterns that affect the seasonality of precipitation occur in Africa though it generally differs from the way it operates in Asia
42.
Oceanic climate
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Oceanic climates are defined as having a monthly mean temperature below 22 °C in the warmest month, and above 0 °C in the coldest month. It typically lacks a dry season, as precipitation is evenly dispersed throughout the year. Oceanic climates generally have cool summers and mild to cool winters, Oceanic climates are most dominant in Europe, where they spread much farther inland than in other continents. Oceanic climates can have much storm activity as they are located in the belt of the stormy westerlies, many oceanic climates have frequent cloudy or overcast conditions due to the near constant storms and lows tracking over or near them. Precipitation is both adequate and reliable throughout the year in oceanic climates, extended months of rain and cloudy conditions are common in oceanic climates. Seattle is an example of this, between October and May, Seattle experiences high rainfall and is mostly or partly cloudy six out of every seven days. In most areas with a climate, precipitation comes in the form of rain for the majority of the year. However, some areas with this climate see some snowfall annually during winter, outside of Australia and parts of New Zealand, most areas with an oceanic climate experience at least one snowstorm per year. In the poleward locations of the climate zone, snowfall is more frequent. Overall temperature characteristics of the oceanic climates feature cool temperatures and infrequent extremes of temperature, summers are cool, with the warmest month having a mean temperature below 22 °C. Poleward of the latter is a zone of the subpolar oceanic climate, with long and cold winters and cool. Examples of this climate include parts of coastal Iceland in the Northern Hemisphere and extreme southern Chile, Oceanic climates are not necessarily always found in coastal locations on the aforementioned parallels, however, in most cases oceanic climates parallel higher middle latitude oceans. The polar jet stream, which moves in a west to east direction across the middle latitudes, advancing low pressure systems, storms, in coastal areas of the higher middle latitudes, the prevailing onshore flow creates the basic structure of most oceanic climates. Oceanic climates are a product and reflection of the adjacent to them. In summer, high pressure pushes the prevailing westerlies north of many oceanic climates. As a result of the Gulf Stream, west-coast areas located in high latitudes like Ireland, the UK, Oceanic climates in Europe occur mostly in Northwest Europe, from Ireland and Great Britain eastward to central Europe. Most of France, Germany, Norway, the north coast of Spain, examples of oceanic climates are found in London, Bergen, Dublin, Berlin, Bilbao, Donostia-San Sebastian, Biarritz, Bayonne, Zürich, Copenhagen and Paris. With decreasing distance to the Mediterranean Sea, the climate of Northwest Europe gradually changes to the subtropical dry-summer or Mediterranean climate of southern Europe
43.
Subarctic climate
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The subarctic climate is a climate characterised by long, usually very cold winters, and short, cool to mild summers. It is found on large landmasses, away from the effects of an ocean. These climates represent Köppen climate classification Dfc, Dwc, Dsc, Dfd, Dwd and Dsd. This type of climate offers some of the most extreme seasonal temperature variations found on the planet, in winter, temperatures can drop to −40 °C and in summer, record low temperatures can be as cold as −60 °C. With 5–7 consecutive months where the temperature is below freezing. Summer warmth is insufficient to thaw more than a few surface feet, seasonal thaw penetrates from 2 to 14 ft, depending on latitude, aspect, and type of ground. Some northern areas with subarctic climates located near oceans, have milder winters and no permafrost, the frost-free season is very short, varying from about 45 to 100 days at most, and a freeze can occur during any month in many areas. Most subarctic climates have very little precipitation, typically no more than 380 mm over an entire year, a notable exception to this pattern is that subarctic climates occurring at high altitudes in otherwise temperate regions have extremely high precipitation due to orographic lift. Mount Washington, with temperatures typical of a climate, receives an average rain-equivalent of 101.91 inches of precipitation per year.5 metres that does not melt until June. Vegetation in regions with subarctic climates is generally of low diversity, as only hardy species can survive the long winters, trees are mostly limited to conifers, as few broadleaved trees are able to survive the very low temperatures in winter. This type of forest is known as taiga, a term which is sometimes applied to the climate found therein as well. Even though the diversity may be low, numbers are high, the process by which plants become acclimated to cold temperatures is called hardening. In some areas, ice has scoured rock surfaces bare, entirely stripping off the overburden, elsewhere rock basins have been formed and stream courses dammed, creating countless lakes. The Tatra Mountains in Poland, above 800m, the Eastern Anatolia, between 1,600 and 2,100 meters – Turkey. The Pyrenees, between 1,600 and 2,100 meters – Andorra, France and Spain, further north in Siberia, continentality increases so much that winters can be exceptionally severe, averaging below −38 °C, even though the hottest month still averages more than 10 °C. This creates Dfd, Dwd and Dsd climates, one example is parts of the Snowy Mountains in Australia, although theyre more alpine than true subarctic. In China and Mongolia, as one moves southwestwards or towards lower altitudes, temperatures increase, Boreal ecology Boreal forest Plants of continental subarctic climate Köppen climate classification Subantarctic
44.
Tundra
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In physical geography, tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sami word tūndâr uplands, there are three types of tundra, Arctic tundra, alpine tundra, and Antarctic tundra. In tundra, the vegetation is composed of shrubs, sedges and grasses, mosses. Scattered trees grow in tundra regions. The ecotone between the tundra and the forest is known as the line or timberline. Arctic tundra occurs in the far Northern Hemisphere, north of the taiga belt, the word tundra usually refers only to the areas where the subsoil is permafrost, or permanently frozen soil. Permafrost tundra includes vast areas of northern Russia and Canada, the polar tundra is home to several peoples who are mostly nomadic reindeer herders, such as the Nganasan and Nenets in the permafrost area. Arctic tundra contains areas of landscape and is frozen for much of the year. The soil there is frozen from 25–90 cm down, and it is impossible for trees to grow, instead, bare and sometimes rocky land can only support low growing plants such as moss, heath, and lichen. There are two seasons, winter and summer, in the polar tundra areas. During the winter it is cold and dark, with the average temperature around −28 °C. However, extreme temperatures on the tundra do not drop as low as those experienced in taiga areas further south. During the summer, temperatures rise somewhat, and the top layer of seasonally-frozen soil melts, the tundra is covered in marshes, lakes, bogs and streams during the warm months. Generally daytime temperatures during the rise to about 12 °C. Arctic tundras are sometimes the subject of conservation programs. In Canada and Russia, many of areas are protected through a national Biodiversity Action Plan. Tundra tends to be windy, with winds often blowing upwards of 50–100 km/h, however, in terms of precipitation, it is desert-like, with only about 15–25 cm falling per year. Although precipitation is light, evaporation is also relatively minimal, there is a natural pattern of accumulation of fuel and wildfire which varies depending on the nature of vegetation and terrain
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Ice cap climate
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An ice cap climate is a polar climate where the temperature never exceeds 0 °C. The climate covers areas in or near the regions, such as Antarctica and Greenland. Such areas are covered by a permanent layer of ice and have no vegetation, but they may have animal life, ice cap climates are inhospitable to human life. Antarctica, the coldest continent on Earth, sustains no permanent human residents, some places like Antarctica had a different climate before having an ice cap climate Under the Köppen climate classification, the ice cap climate is denoted as EF. Ice caps are defined as a climate with no months above 0 °C, such areas are found around the north and south pole, and on the top of the highest mountains. Since the temperature never exceeds the point of ice, any snow or ice that accumulates remains there permanently. The ice cap climate is distinct from the climate, or ET. A tundra climate has a season with temperatures consistently above freezing for several months. This summer is enough to melt the ice cover, which prevents the formation of ice sheets. Because of this, tundras have vegetation, while ice caps do not, ice cap climate is the worlds coldest climate, and includes the coldest places on Earth. Vostok, Antarctica is the coldest place in the world, having recorded a temperature of −89.2 °C and these ice sheets, however, are not static, but slowly move off the continents into the surrounding waters. New snow and ice accumulation then replaces the ice that is lost, precipitation is nearly non-existent in ice cap climates. It is never enough for rain, and usually too cold to generate snow. However, wind can blow snow onto the ice sheets from nearby tundras, the ice sheets are often miles thick. Much of the land located under the ice sheets is actually below sea level, however, it is the weight of the ice itself that forces this land below sea level. If the ice was removed, the land would rise back up in an effect called post-glacial rebound and this effect is creating new land in formerly ice cap areas such as Sweden. The causes the formation of lakes, the largest being Lake Vostok in Antarctica. Ice cap climates have only existed in ice ages, there have been at least five such ice ages in the Earths past
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Alpine climate
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Alpine climate is the average weather for the regions above the tree line. This climate is referred to as a mountain climate or highland climate. There are multiple definitions of alpine climate, one simple definition is the climate which causes trees to fail to grow due to cold. According to the Holdridge life zone system, alpine climate occurs when the mean biotemperature of a location is between 1.5 and 3 °C, which prevents tree growth. Biotemperature is defined as the temperature, except all temperatures below 0 °C are treated as 0 °C, in the Köppen climate classification, the alpine climate is part of Group E, along with the polar climate, where no month has a mean temperature higher than 10 °C. The temperature profile of the atmosphere is a result of an interaction between radiation and convection, sunlight in the visible spectrum hits the ground and heats it. The ground then heats the air at the surface, however, when air is hot, it tends to expand, which lowers its density. Thus, hot air tends to rise and transfer heat upward and this is the process of convection. Convection comes to equilibrium when a parcel at air at a given altitude has the density as its surroundings. Air is a conductor of heat, so a parcel of air will rise. This is known as a process, which has a characteristic pressure-temperature curve. As the pressure gets lower, the temperature decreases, the rate of decrease of temperature with elevation is known as the adiabatic lapse rate, which is approximately 9.8 °C per kilometre of altitude. Note that the presence of water in the atmosphere complicates the process of convection, water vapor contains latent heat of vaporization. As air rises and cools, it becomes saturated and cannot hold its quantity of water vapor. The water vapor condenses, and releases heat, which changes the rate from the dry adiabatic lapse rate to the moist adiabatic lapse rate. The actual lapse rate, called the lapse rate, is not constant. Therefore, moving up 100 metres on a mountain is roughly equivalent to moving 80 kilometres towards the pole and this relationship is only approximate, however, since local factors, such as proximity to oceans, can drastically modify the climate. As the altitude increases, the form of precipitation becomes snow
