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Satellite images show extent of smog in China

France: Belgian and French Researchers have mapped for the first time, the pollution of the air in China from space. Atmospheric scientists used an infrared sensor onboard the European MetOp weather satellite to map clouds of particulate matter, carbon dioxide sulfur dioxide and ammonia on the North China Plain, covering Beijing , Tianjin and Hebei province.

The experts at French National Center for Space Research (CNRS) explained that there are 2 conditions required for this technology to work. There should be stable weather conditions for that pollution accumulates on the ground level. There should also be a large temperature difference between the air at ground level and the higher layers of the atmosphere to warm the pollution emissions stand out, he added.

Source: Exame abril