Isro-Nasa jointly confirms presence of Excess for aerosol in Asia
Isro-Nasa jointly confirms presence of Excess for aerosol in Asia
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A joint study by Isro and Nasa has confirmed the presence of an aerosol layer over the Asia region. Satellite images had earlier showed this

 The study also originates the presence of nitrate.

BENGALURU: A joint study by the Indian Space Research Organization (Isro) and National Aeronautics and Space Administration (Nasa) of the US, which had begin after satellite images showed the presence of an aerosol layer over the Asia region, has determined the same and has also found the presence of nitrate, which is a latest verdict.

Aerosol, the sub-micron size particles perched in air are formed from a variety of man-made and natural processes such as vehicle exhaust, waste-burning, windblown dust, volcanic eruptions et al, are mostly restricted to the first few kilometers from the surface of Earth's atmosphere—Upper Troposphere and Lower Stratosphere (UTLS).

According to Isro, measurements by the mutual squad has "confirmed the presence of aerosol layer seen in satellite measurements over the Asian region and it also shows a razor-sharp increase of aerosol concentration near 16.5-18.5 km (from Earth's surface)."

This layer, Isro says, has discrete size distribution as opposed to that from background mineral aerosol dust that is as we would expect present in the atmosphere. "This layer contains particles of size less than 0.25 micron and are 90 per cent volatile. It becomes visible the aerosol is formed from precursor pollutant gases which are transported via convection from the ground," Isro has said.

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