The weather in a nutshell - all the facts you need to know.
1. The sun's heating varies over the earth and with the seasons
2. The differences of air temperature over the earth cause the winds.
3. The rotation of the earth destroys this simple wind pattern, twisting the winds and producing great wind spirals that are known as the high and low pressure areas.
4. Since cool air can "hold" less vapor than warm air, rain and other forms of precipitation are caused by cooling the air.
5. Pressure in the atnosphere decreases with increasing height.
6. Descreasing the air pressure causes the temperature to drop.
7. Clouds and precipitation are caused by rising air; clear weather is caused by sinking air.
8. Rising air in low pressure areas causes clouds and precipitation; sinking air in high pressure areas causes clear weather.
Source:
Gedzelman, Stanley David. The Science and Wonders of the Atnosphere. 1980 , John Wiley & Sons, New York.
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