Abstract :
Atmosphere is an envelope of gasses and aerosols around the planet, 99% of the total
mass of atmospheric gases resides within 32km from Earth’s surface in vertical column. From
primordial era to current scenario composition of earth endured numerous drastic
modifications. In last decade atmosphere had undergone a vigorous change by the addition of
many pollutants in both natural and anthropogenic aspects. South Asia is a densely populated;
masses here are in a transition state, these developing nations in this region considerably done
enough damage to the atmosphere of south Asia by inserting multiple pollutants in
atmosphere in a number of anthropogenic activities. These pollutants piled up as a serious
danger for people around the globe like Methane (CH4), Sulphur Dioxide (SO?), Carbon
Monoxide (CO) Nitrogen Dioxide (NO2), Carbon Dioxide (CO2), Formaldehydes (HCHO)
and tropospheric Ozone (O3) etc. “Environmental Remote Sensing” has arisen as a great tool
of modern era to get fruitful and precise results to monitor these variations in atmospheric
pollutants. The NASA’s (National Aeronautics and Space Administration), Geospatial
Interactive Online Visualization ANd aNalysis Infrastructure (Giovanni) system provides
access to a wide variety of NASA’s remote sensing data, Variety of environmental data types
has permitted the use of Giovanni for different applications to define addition and increase in
concentration of various pollutants. Spatio temporal variation of pollutants shows their
concentration increased in last decade and in last three years the concentration boosted as
compared to last seven years.
Keyword :
Anthropogenic, Pollutants, Environmental Remote Sensing. National Aeronautics and Space Administration (NASA), Geospatial Interactive Online Visualization ANd aNalysis Infrastructure (Giovanni).