Condensation And Evaporation

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According to ( weather climate) "Atmospheric Moisture: Evaporation and Condensation
The water cycle
There is always water vopour present in the atmosphere. Lesson 3 demonstrated that when the air rises and cools, it become saturated and releases water vapour as condensation. This condensation is the source of all clouds and rain. Water vapour enters the atmosphere by evaporation from surface bodies of water. These include puddles, ponds, streams, riviers, lakes and oceans. Water also enter the atmosphere by evapotranspiration from plants and trees. The water vapour is returned to surface in the rain, hail, sleet or snow, where it is returned to soil for uptake by vegetation or to surface streams, riviers and lakes and ultimately by the sea.
Rate increase when temperatures are higher; an increase of 10C will approximately double the rate of evaporation. The humidity of the surrounding air will also influence evaporation. Drier air has a greater “thirst” for water vapour than humid, moist air. It follows, therefore, that the presence of wind will also increase evaporation. On still days, water evaporating to the air remains close to its source, increasing the local humidity. As the moisture content of the air increases, evaporation will diminish. If, however, a steady flow of air exists to remove the newly formed vapour, the air surrounding the water source will remain dry, “thirsty” for the future
If cooling continues, as may happen when the atmosphere is unstable, the small liquid drops will coalesce to form larger drops, ice crystals cling together to form snowflakes and supercooled drops freeze on contact with ice crystals. Eventually such combinations become weighty enough to fall out of the cloud. Some precipitation may evaporate again before reaching the ground. The rest falls as rain if temperatures are high enough to melt ice crystals, or snow if ground or mountain top temperatures are below 0 C. Hail forms when large drops are tossed up and down in strong vertical currents within a cloud, alternatively collecting additional water and then freezing, until ice stones acquire sufficient weight to overcome the upthrusting air currents and fall to the

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