For space monitoring of technogenic pollution specialists use imagery of medium (10-30 m) spatial resolution, which has wide range of spectral bands.
For oil spills detection it is necessary to use IR and near-IR bands. Bands from visible part of the spectrum are helpful for detecting dust particles and smog – indicators of air pollution caused by huge industrial areas.
 

Air pollution by factories in Chelyabinsk.

Aerosol emissions from metallurgical, chemical, petrochemical enterprises harm the environment and cause acid rains. This and many more dangerous phenomena also can be traced by using satellite monitoring.
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