EARTH123 Lecture Notes - Lecture 1: Hygroscopy, Vertical Draft, Sea Salt
4 Oct 2016
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Document Summary
Atmospheric water is lined with soil and surface water through precipitation and evaporation. These storages only account for 0. 03% of water but are very important and drinking, agricultural, and industrial water. Rapid average turnover rate means atmospheric water is important both as a input and output to soil and surface water. Soil-moisture precipitation feedback significant fraction of precipitation originates from local evaporation. Positive feedback precipitation recharges local soil water which returns to atmosphere and evaporation. Heading of the land and of the air directly above it causes the air to ascend heated air less dense than the air that surrounds it. Moist air heating wet/sea land causes evaporation. Cool air cannot hold as much water vapour as warm air lower saturation vapour pressure. Saturation vapour pressure pressure exerted by water vapour molecules in the air when it is saturated with water vapour.
