Meteorology for Air Pollution Control Engineers4

Meteorology for Air Pollution Control Engineers4 - sinking...

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1 n In the Northern Hemisphere we see from the circulation  cells sketched at the edges of the figure a south-to-north  flow at high altitude and a north-to-south flow at the  surface in the tropical and polar cells, with oppositely  directed flows in the temperature cell.
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2 n There are seven boundaries between cells on the globe, one  at the equator and two in each hemisphere and two at the  poles. n At the boundary at the equator and the two between the  temperate and polar cells the air is rising. n At the boundaries between tropical and temperate cells  and at the Poles the air is sinking.
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3 n We shall see later that rising air is cooled and produces rain, while 
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Unformatted text preview: sinking air is heated and becomes relatively dry. n Most of the worlds rain forests are located hear the equatorial rising zone, and the great temperate forests are near the temperate-polar rising zones. n Most of the worlds great deserts are located near the temperature-tropical sinking zones. The Poles also have little precipitation; they are cold deserts. 4 2.2 The Effect of the Earths Rotation n The preceding simple picture is greatly complicated by the rotation of the earth. n Next slide (Fig. 5.3) Path of a ball thrown from the North Pole....
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This note was uploaded on 10/14/2011 for the course CIVL CIVL345 taught by Professor Hsinchu during the Spring '11 term at SUNY College of Environmental Science and Forestry.

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Meteorology for Air Pollution Control Engineers4 - sinking...

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