Meteorology for Air Pollution Control Engineers1

Meteorology for Air Pollution Control Engineers1 -...

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1 Meteorology for Air Pollution Control Engineers Concept notes De nevers
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2 1. The Atmosphere n The global atmosphere is roughly 78% nitrogen, 21%  oxygen, 1% argon, and other trace gases. n Those ratio change very little with place or time in most  of the atmosphere.
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3 n However, the moisture content of the atmosphere, either as  water vapor or as liquid drops or ice crystals, changes  significantly with place and time and is responsible for many  of the exciting, beautiful, and destructive things the 
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Unformatted text preview: atmosphere does. n A typical water content (20 , 50% RH-relative humidity, ℃ defined later) is 1.15 mol (or vol.) %. 4 n The upper boundary of the atmosphere is not well-defined. n The atmosphere simply becomes thinner and thinner with increasing height until it is as thin as outer space. n One-half of the mass of the atmosphere is within 3.4 miles of the surface; 99% is within 20 miles of the surface....
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