In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity. The main forms of precipitation include drizzle, sleet, snow and hail. Precipitation occurs when a portion of the atmosphere becomes saturated with water vapor, so that the water condenses and "precipitates", thus and mist are not precipitation but suspensions, because the water vapor does not condense sufficiently to precipitate. Two processes acting together, can lead to air becoming saturated: cooling the air or adding water vapor to the air. Precipitation forms as smaller droplets coalesce via collision with other rain drops or ice crystals within a cloud. Short, intense periods of rain in scattered locations are called "showers."Moisture, lifted or otherwise forced to rise over a layer of sub-freezing air at the surface may be condensed into clouds and rain. This process is active when freezing rain occurs. A stationary front is present near the area of freezing rain and serves as the foci for forcing and rising air.
Provided necessary and sufficient atmospheric moisture content, the moisture within the rising air will condense into clouds, namely stratus and cumulonimbus. The cloud droplets will grow large enough to form raindrops and descend toward the Earth where they will freeze on contact with exposed objects. Where warm water bodies are present, for example due to water evaporation from lakes, lake-effect snowfall becomes a concern downwind of the warm lakes within the cold cyclonic flow around the backside of extratropical cyclones. Lake-effect snowfall can be locally heavy. Thundersnow is possible within lake effect precipitation bands. In mountainous areas, heavy precipitation is possible where upslope flow is maximized within windward sides of the terrain at elevation. On the leeward side of mountains, desert climates can exist due to the dry air caused by compressional heating. Most precipitation is caused by convection; the movement of the monsoon trough, or intertropical convergence zone, brings rainy seasons to savannah climes.
Precipitation is a major component of the water cycle, is responsible for depositing the fresh water on the planet. 505,000 cubic kilometres of water falls as precipitation each year. Given the Earth's surface area, that means the globally averaged annual precipitation is 990 millimetres, but over land it is only 715 millimetres. Climate classification systems such as the Köppen climate classification system use average annual rainfall to help differentiate between differing climate regimes. Precipitation may occur on other celestial bodies, e.g. when it gets cold, Mars has precipitation which most takes the form of frost, rather than rain or snow. Precipitation is a major component of the water cycle, is responsible for depositing most of the fresh water on the planet. 505,000 km3 of water falls as precipitation each year, 398,000 km3 of it over the oceans. Given the Earth's surface area, that means the globally averaged annual precipitation is 990 millimetres. Mechanisms of producing precipitation include convective and orographic rainfall.
Convective processes involve strong vertical motions that can cause the overturning of the atmosphere in that location within an hour and cause heavy precipitation, while stratiform processes involve weaker upward motions and less intense precipitation. Precipitation can be divided into three categories, based on whether it falls as liquid water, liquid water that freezes on contact with the surface, or ice. Mixtures of different types of precipitation, including types in different categories, can fall simultaneously. Liquid forms of precipitation include drizzle. Rain or drizzle that freezes on contact within a subfreezing air mass is called "freezing rain" or "freezing drizzle". Frozen forms of precipitation include snow, ice needles, ice pellets and graupel; the dew point is the temperature to which a parcel must be cooled in order to become saturated, condenses to water. Water vapor begins to condense on condensation nuclei such as dust and salt in order to form clouds. An elevated portion of a frontal zone forces broad areas of lift, which form clouds decks such as altostratus or cirrostratus.
Stratus is a stable cloud deck which tends to form when a cool, stable air mass is trapped underneath a warm air mass. It can form due to the lifting of advection fog during breezy conditions. There are four main mechanisms for cooling the air to its dew point: adiabatic cooling, conductive cooling, radiational cooling, evaporative cooling. Adiabatic cooling occurs when air expands; the air can rise due to convection, large-scale atmospheric motions, or a physical barrier such as a mountain. Conductive cooling occurs when the air comes into contact with a colder surface by being blown from one surface to another, for example from a liquid water surface to colder land. Radiational cooling occurs due to the emission of infrared radiation, either by the air or by the surface underneath. Evaporative cooling occurs when moisture is added to the air through evaporation, which forces the air temperature to cool to its wet-bulb temperature, or until it reaches saturation; the main ways water vapor is added to the air are: wind convergence into areas of upward motion, precipitation or virga falling from above, daytime heating evaporating water from the surface of oceans, water bodies or wet lan
Geographic coordinate system
A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position. A common choice of coordinates is latitude and elevation. To specify a location on a plane requires a map projection; the invention of a geographic coordinate system is credited to Eratosthenes of Cyrene, who composed his now-lost Geography at the Library of Alexandria in the 3rd century BC. A century Hipparchus of Nicaea improved on this system by determining latitude from stellar measurements rather than solar altitude and determining longitude by timings of lunar eclipses, rather than dead reckoning. In the 1st or 2nd century, Marinus of Tyre compiled an extensive gazetteer and mathematically-plotted world map using coordinates measured east from a prime meridian at the westernmost known land, designated the Fortunate Isles, off the coast of western Africa around the Canary or Cape Verde Islands, measured north or south of the island of Rhodes off Asia Minor.
Ptolemy credited him with the full adoption of longitude and latitude, rather than measuring latitude in terms of the length of the midsummer day. Ptolemy's 2nd-century Geography used the same prime meridian but measured latitude from the Equator instead. After their work was translated into Arabic in the 9th century, Al-Khwārizmī's Book of the Description of the Earth corrected Marinus' and Ptolemy's errors regarding the length of the Mediterranean Sea, causing medieval Arabic cartography to use a prime meridian around 10° east of Ptolemy's line. Mathematical cartography resumed in Europe following Maximus Planudes' recovery of Ptolemy's text a little before 1300. In 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, England as the zero-reference line; the Dominican Republic voted against the motion, while Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911.
In order to be unambiguous about the direction of "vertical" and the "horizontal" surface above which they are measuring, map-makers choose a reference ellipsoid with a given origin and orientation that best fits their need for the area they are mapping. They choose the most appropriate mapping of the spherical coordinate system onto that ellipsoid, called a terrestrial reference system or geodetic datum. Datums may be global, meaning that they represent the whole Earth, or they may be local, meaning that they represent an ellipsoid best-fit to only a portion of the Earth. Points on the Earth's surface move relative to each other due to continental plate motion and diurnal Earth tidal movement caused by the Moon and the Sun; this daily movement can be as much as a metre. Continental movement can be up to 10 m in a century. A weather system high-pressure area can cause a sinking of 5 mm. Scandinavia is rising by 1 cm a year as a result of the melting of the ice sheets of the last ice age, but neighbouring Scotland is rising by only 0.2 cm.
These changes are insignificant if a local datum is used, but are statistically significant if a global datum is used. Examples of global datums include World Geodetic System, the default datum used for the Global Positioning System, the International Terrestrial Reference Frame, used for estimating continental drift and crustal deformation; the distance to Earth's center can be used both for deep positions and for positions in space. Local datums chosen by a national cartographical organisation include the North American Datum, the European ED50, the British OSGB36. Given a location, the datum provides the latitude ϕ and longitude λ. In the United Kingdom there are three common latitude and height systems in use. WGS 84 differs at Greenwich from the one used on published maps OSGB36 by 112 m; the military system ED50, used by NATO, differs from about 120 m to 180 m. The latitude and longitude on a map made against a local datum may not be the same as one obtained from a GPS receiver. Coordinates from the mapping system can sometimes be changed into another datum using a simple translation.
For example, to convert from ETRF89 to the Irish Grid add 49 metres to the east, subtract 23.4 metres from the north. More one datum is changed into any other datum using a process called Helmert transformations; this involves converting the spherical coordinates into Cartesian coordinates and applying a seven parameter transformation, converting back. In popular GIS software, data projected in latitude/longitude is represented as a Geographic Coordinate System. For example, data in latitude/longitude if the datum is the North American Datum of 1983 is denoted by'GCS North American 1983'; the "latitude" of a point on Earth's surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the Equator and to each other; the North Pole is 90° N. The 0° parallel of latitude is designated the Equator, the fun
Jujuy is a province of Argentina, located in the extreme northwest of the country, at the borders with Chile and Bolivia. The only neighboring Argentine province is Salta to the south. Pre-Columbian inhabitants known as the Omaguacas and Ocloyas, who were conquered by the Incas during their expansion period, practiced agriculture and domesticated the guanaco, they had huts made of mud, erected stone fortresses to protect their villages. An example of such fortresses is Pucará de Tilcara, Pucará meaning "fortress". In 1593, a small settlement was erected in the Jujuy valley by the effort of Francisco de Argañaraz y Murguía. In spite of the attacks of the Calchaquíes and Omaguacas aborigines, the population and activity of the village consolidated and grew. At the end of the 17th century, the customs to the Viceroyalty of Peru was transferred from Córdoba to Jujuy. With the separation from Peru and the creation of the Viceroyalty of the Río de la Plata, Jujuy lost its importance and its population started to diminish.
During the May Revolution and the battles for the independence of the United provinces of the South, many confrontations took place in Jujuy because the Spanish concentrated their forces in Peru. The people of Jujuy had to endure the Jujuy Exodus, a massive evacuation with a scorched earth policy, led by General Manuel Belgrano; the Spanish surrendered, but the war affected the economy of the area. After a series of internal conflicts, the province declared its autonomy from Tucumán and Salta Provinces on November 18, 1834. Jujuy started a gradual process of economic and social improvement, at the end of the 19th century, the sugarcane industry arose. At the beginning of the following century, the railway connected the province with Buenos Aires, La Paz, Bolivia. Heavy industry first arrived in Jujuy at the hand of General Manuel Savio, a presidential economic advisor who, in 1945, had Argentina's first modern steel mill installed in Jujuy. In 1969, Jujuy joined oil-rich neighboring Salta Province with the discovery of petroleum by the state-owned YPF.
There are three main areas in Jujuy. The Río Grande of Jujuy cuts through the Quebrada de Humahuaca canyon, of heights between 1,000 and 3,500 meters. To the Southeast, the sierras descends to the Gran Chaco region; the vast difference in height and climate produces desert areas such as the Salinas Grandes salt mines, subtropical Yungas jungle. In spite of the different areas, the terrain of the province is arid and semi-desertic, except for the El Ramal valley of the San Francisco River. Temperature difference between day and night is wider in higher lands, precipitations are scarce outside the temperate area of the San Francisco River; the Grande River and the San Francisco River flow to the Bermejo River. The San Juan, La Quiaca and Sansana flow to the Pilcomayo River. Jujuy's economy is moderately underdeveloped, yet diversified, its 2006 economy was an estimated US$2.998 billion, or, US$4,899 per capita. Jujuy is, despite its rural profile, not agrarian. Agriculture contributes about 10% to output and the main agricultural activity is sugarcane.
Its processing represents more than half of the province's gross production, 30% of the national sugar production. The second agricultural activity is tobacco, cultivated in the Southeastern valley, as a major national producer. Other crops include beans and tomatoes, other vegetables for local consumption. Cattle and goats are raised on a small scale for local dairies, llamas, vicuñas and guanacos are raised in significant numbers for wool. Manufacturing is more prominent in Jujuy than in some neighboring provinces, adding 15% to its economy. Jujuy is the second largest Argentine producer of iron, used by the Altos Hornos Zapla steel mill. Other industrial activities include mining for construction material, petroleum extraction at Caimancito, salt production from Salinas Grandes salt basin, the paper production fed by the Jujuy's forests with 20% of the industrial product of the province; the province has been served since 1967 by the Gobernador Horacio Guzmán International Airport. An important and still growing activity, tourism in the area brings a number of Argentine tourists, tourists from other South American countries and Europeans.
Most tourists head for San Salvador de Jujuy to start their exploration of the province. The Horacio Guzmán international airport, 34 km from San Salvador, connects the province with Buenos Aires, Córdoba, some destinations in Bolivia. Apart from the fantastic contrast of land colours and formations, tourists are attracted by the strong aboriginal roots in the culture of Jujuy. Aymará and Quechua cultures coexist in the area, ruins of the Incas are well conserved. Tourists who come to Jujuy visit the area of the Quebrada de Humahuaca and its Cerro de los Siete Colores, Pucará de Tilcara, Salinas Grandes and many small towns. Other less frequent destinations include the Calilegua National Park in the Yungas jungle, La Quiaca, Laguna de Pozuelos, Laguna Guayatayoc; the province is divided into 16 departments. Department: Cochinoca El Carmen Doctor Manuel Belgrano Humahuaca Ledesma Palpalá Rinconada San Antonio San Pedro Santa Bárbara Santa Catalina Susques Tilcara Tumbaya Valle Grande Yav
Argentina the Argentine Republic, is a country located in the southern half of South America. Sharing the bulk of the Southern Cone with Chile to the west, the country is bordered by Bolivia and Paraguay to the north, Brazil to the northeast and the South Atlantic Ocean to the east, the Drake Passage to the south. With a mainland area of 2,780,400 km2, Argentina is the eighth-largest country in the world, the fourth largest in the Americas, the largest Spanish-speaking nation; the sovereign state is subdivided into twenty-three provinces and one autonomous city, Buenos Aires, the federal capital of the nation as decided by Congress. The provinces and the capital exist under a federal system. Argentina claims sovereignty over part of Antarctica, the Falkland Islands, South Georgia and the South Sandwich Islands; the earliest recorded human presence in modern-day Argentina dates back to the Paleolithic period. The Inca Empire expanded to the northwest of the country in Pre-Columbian times; the country has its roots in Spanish colonization of the region during the 16th century.
Argentina rose as the successor state of the Viceroyalty of the Río de la Plata, a Spanish overseas viceroyalty founded in 1776. The declaration and fight for independence was followed by an extended civil war that lasted until 1861, culminating in the country's reorganization as a federation of provinces with Buenos Aires as its capital city; the country thereafter enjoyed relative peace and stability, with several waves of European immigration radically reshaping its cultural and demographic outlook. The almost-unparalleled increase in prosperity led to Argentina becoming the seventh wealthiest nation in the world by the early 20th century. Following the Great Depression in the 1930s, Argentina descended into political instability and economic decline that pushed it back into underdevelopment, though it remained among the fifteen richest countries for several decades. Following the death of President Juan Perón in 1974, his widow, Isabel Martínez de Perón, ascended to the presidency, she was overthrown in 1976 by a U.
S.-backed coup which installed a right-wing military dictatorship. The military government persecuted and murdered numerous political critics and leftists in the Dirty War, a period of state terrorism that lasted until the election of Raúl Alfonsín as President in 1983. Several of the junta's leaders were convicted of their crimes and sentenced to imprisonment. Argentina is a prominent regional power in the Southern Cone and Latin America, retains its historic status as a middle power in international affairs. Argentina has the second largest economy in South America, the third-largest in Latin America, membership in the G-15 and G-20 major economies, it is a founding member of the United Nations, World Bank, World Trade Organization, Union of South American Nations, Community of Latin American and Caribbean States and the Organization of Ibero-American States. Despite its history of economic instability, it ranks second highest in the Human Development Index in Latin America; the description of the country by the word Argentina has been found on a Venetian map in 1536.
In English the name "Argentina" comes from the Spanish language, however the naming itself is not Spanish, but Italian. Argentina means in Italian " of silver, silver coloured" borrowed from the Old French adjective argentine " of silver" > "silver coloured" mentioned in the 12th century. The French word argentine is the feminine form of argentin and derives from argent "silver" with the suffix -in; the Italian naming "Argentina" for the country implies Terra Argentina "land of silver" or Costa Argentina "coast of silver". In Italian, the adjective or the proper noun is used in an autonomous way as a substantive and replaces it and it is said l'Argentina; the name Argentina was first given by the Venetian and Genoese navigators, such as Giovanni Caboto. In Spanish and Portuguese, the words for "silver" are plata and prata and " of silver" is said plateado and prateado. Argentina was first associated with the silver mountains legend, widespread among the first European explorers of the La Plata Basin.
The first written use of the name in Spanish can be traced to La Argentina, a 1602 poem by Martín del Barco Centenera describing the region. Although "Argentina" was in common usage by the 18th century, the country was formally named "Viceroyalty of the Río de la Plata" by the Spanish Empire, "United Provinces of the Río de la Plata" after independence; the 1826 constitution included the first use of the name "Argentine Republic" in legal documents. The name "Argentine Confederation" was commonly used and was formalized in the Argentine Constitution of 1853. In 1860 a presidential decree settled the country's name as "Argentine Republic", that year's constitutional amendment ruled all the names since 1810 as valid. In the English language the country was traditionally called "the Argentine", mimicking the typical Spanish usage la Argentina and resulting from a mistaken shortening of the fuller name'Argentine Republic'.'The Argentine' fell out of fashion during the mid-to-late 20th century, now the country is referred to as "Argentina".
In the Spanish language "Argentina" is feminine, taking the feminine article "La" as the i
National Agricultural Technology Institute
The National Agricultural Technology Institute known as INTA, is an Argentine federal extension agency in charge of the generation and diffusion of technologies and learning procedures for the agriculture and agro-industrial activities within an ecologically clean environment. Though the institute, created in 1956, depends on the Secretary of Agriculture, Livestock and Food of the Ministry of Economy and Production, it has financial and operative autarkic autonomy given by law 25641/02 that provides the Institute with the 0.5% of the importations. The INTA researches and produces information and technologies applied to processes and products, that are forwarded to the producers, it works, for instance, in the genetic improvement and development of specific properties of diverse cereals, flowers, forest trees and vegetables, as well as the handling of cultivations and native forests. Another important field is the sanity of the products, it studies and researches the harvest, packing and commercialisation of fruit and vegetables, as well as the handling and processing of meats and dairy products.
The institute observes market behaviours of internal and external consume, as well as the economical impact of the different applied technologies. The INTA has a directive board composed of members of the private sector; the national direction executes the planning of the board, assisted by the organization and administration technical areas. Research and producers' capacitation takes place in 44 experimental agricultural stations and 240 extension units around the country. See video about INTA INTI, the National Industrial Technology Institute of Argentina Science and technology in Argentina National Agricultural Technology Institute Ministerio De Ciencia, Tecnología e Innovación productiva de Argentina Ministerio de Agricultura, Ganadería y Pesca de Argentina