lecture5b - Atmospheric Moisture II. Atmospheric Moisture...

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Atmospheric Moisture
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II. Atmospheric Moisture A. Hydrologic Cycle transfer of water among the Earth’s spheres Surface: evaporation Atmosphere: saturation condensation precipitation
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Hydrologic Cycle
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B. Water Vapor and Liquid Water involves changes of state 1. Evaporation liquid to gas involves energy ( cooling process ) 3. Condensation gas to liquid yields energy ( heating process ) 2. Saturation maximum amount of water vapor in an air parcel
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(~9,000 ft. a.s.l.) (~40 ft. a.s.l.) C. Indices of Water-Vapor Content Humidity = amount of water vapor in the air 1. Vapor Pressure contribution of total atmospheric pressure from water vapor Saturation Vapor Pressure maximum vapor pressure that can exist; increases with increase in temperature With an increase in temperature, it becomes With an increase in temperature, it becomes more difficult to reach saturation more difficult to reach saturation
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lecture5b - Atmospheric Moisture II. Atmospheric Moisture...

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