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बेसिक इंग्लिश का दूसरा सत्र (कक्षा प्रारंभ : 22 अक्तूबर, शाम 3:30 से 5:30)
Isro orbiter to scan India's air for pollutants
Mar 08, 2016

The Space Applications Centre (SAC) of Indian Space Research Organisation (Isro) and space flight laboratory (SFL) of University of Toronto's Institute for Aerospace Studies are collaborating on developing the Next Generation Earth Monitoring and Observation and Aerosol Monitoring (NEMO-AM) satellite. This is among Isro's most important high-performance nano-satellite missions for the country.

What function will be performed by Nano-Satellite:

  • The nano-satellite will monitor suspended particles and aerosols that have made the air of major Indian cities like Delhi, Ahmedabad, Lucknow, Amritsar and Allahabad among the most polluted in the world.

The tiny particles and aerosols in the exhaust of vehicles, emissions from industrial chimneys and even dust particles from construction work fill the air we breathe. These aerosols and particulate matter of size 2.5 micrometers (PM2.5) enter our lungs and restrict the free flow of air.

  • SAC is providing the necessary software for instruments that are to be made in Canada. The nano-satellite, which will be of 2 x 2 x 1 feet dimension and weigh 15 kg, will be launched 500 km above the earth.
  • NEMO mission is designed to cover, each day, up to 50,000 square kilometer area of the country's 32.87 lakh sq km. 

Technological aspect of Satellite: 

  • The NEMO-AM satellite with its powerful imaging sensor analyses the sunlight reflected from the earth's surface. 

  • The NEMO-AM satellite with its powerful imaging sensor analyses the sunlight reflected from the earth's surface This light, which passes through the earth's atmo sphere before reaching NEMO will be analyzed by the satellite from different angles to deter mine the nature of suspended particles and aerosol concentration in the ambient air of India cities. 

How will it help in designing the Policies: 

  • The data will be handy for estimating emissions from vehicles, tracking pollutants plumes, and supporting activities to forecast air quality in cities and towns. New policies can be framed around this data

  • Even cities that do not have specialized instruments in stalled in their streets to mea sure suspended particles, can get an idea of the quality of ambient air with a fair degree of accuracy. NEMO's data can be of great help in decision-making and environmental management activities of both the public and private sectors in a city or town or industrial area.

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