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Once in the atmosphere water vapor condenses or

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Unformatted text preview: ere, water vapor condenses or deposit to form clouds and precipitation which falls to Earth as rain, snow, or hail. Water evaporates into the atmosphere from many different sources: Bodies of water (oceans etc) Ground surfaces Soils Falling precipitation Vegetation provides a source of water vapor through Transpiration plants lose moisture to the air. Tropical rainforest is significant because of dense vegetation. Rates of Evaporation are affected by: Amount and temperature of water Air's relative humidity The lower the RHthe greater the rate of evaporation Wind windy conditions lowers the humidity Sources of Atmospheric Moisture Humidity Refers to the amount of water vapor in the air Depending on the temperature of air, different amounts of moisture can be held Warm air can hold more moisture than cool air Humidity varies from place to place and time to time. Arctic regions: can hold far less water vapor (~0.2% by volume) Tropic regions: can reach up to as 4 or 5 % of a given volume of air. The maximum quantity of moisture that can be held at any...
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