MET-1010 Lecture Notes - Lecture 4: Wet-Bulb Temperature, Vapor Pressure, Dew Point
10 Apr 2017
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Document Summary
Clouds are liquid droplets, when they get too large, they cannot stay suspended and they begin to fall. The stronger the storm, the stronger the precipitation that will fall. Evaporation: more water molecules are evaporating than condensating warmwater= greater rate of evaporation. Saturation= holding maximum possible vapor at the air"s temperature. Same amount of water molecules evaporating and condensing, there is no more room for water molecules to evaporate. The liquid water has to condense on little particles, on a small nucleus"s surface (condensation nuclei) The colder, slower molecules can stick more easily to condensate the nuclei. Dust, salt, and smoke can act as condensation nuclei. Evaporation occurs primarily when the air is warm. Condensation occurs primarily when the air is cool. Air parcel contains oxygen, nitrogen, and water vapor. Don"t study the following : absolute humidity, specific humidity, and mixing ratio. 78%of the atmosphere is made up of nitrogen. 21% of the atmosphere is made up of oxygen.
