Composition and structure of atmosphere 1 geography ncrt
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Image of Constituent and Its Formula : Interesting Gas Transparent to incoming solar radiation but opaque to outgoing terrestrial radiation Absorbs a part of terrestrial radiation and reflects back some part of it towards the earth’s surface Responsible for greenhouse effect Volume increasing due to burning of fossil fuels Leads to rise of temperature Ozone Lies between 10 to 50 km Act as filter and absorbs ultra-violet rays Water Vapor Varies in atmosphere Decreases with altitude Account for 4% by volume (warm & tropical area) & 1% by volume (in cold desert and polar areas) Decreases from equator to poles Absorbs insolation and act as blanket Contributes to stability and instability of air Dust Particles Concentrated in lower layers Convectional air currents transport them to more heights High concentration in subtropical and temperate regions due to dry wind as compared to equatorial and polar regions
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