Asian brown cloud
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The Indian Ocean brown cloud or Asian brown cloud is a layer of air pollution that recurrently covers parts of South Asia, namely the northern Indian Ocean, India, and Pakistan. Viewed from satellite
Coal anthracite
Smog
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Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog to refer to smoky fog due to its opacity,
Asian brown cloud
…lead to water shortages and floods for the hundreds of millions of people who live downstream. Decrease of crop harvests. Elevated concentrations of surface ozone are likely to affect crop yields negatively. The impact is crop specific. A 2011 study found that pollution is making Arabian Sea cyclones more intense…
Airplane used to collect airborne hydrocarbons, May 1972
Photochemical smog in California near the Golden Gate Bridge in December 2003. The brown coloration is due to the NO2 formed from photochemical smog reactions.
Highland Park Optimist Club wearing smog-gas masks at banquet, Los Angeles, circa 1954
During the autumn and spring months, some 500 million tons of rice and wheat crop residues are burnt, and winds blow from India's north and northwest towards east. This aerial view shows India's annual crop burning, resulting in smoke and air pollution over Delhi and adjoining areas.