19. Weather_06

19 Weather_06 - Weather Objectives 1 Why does the wind blow Air moves from high to low pressure-Differential pressures caused by different heating

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Weather Objectives 1) Why does the wind blow? Air moves from high to low pressure -Differential pressures caused by different heating, small scale=lake effect 2) What kind of air is the least dense (most likely to rise) Hot air, and moist air are least dense 3) What happens to a rising parcel of air that could cause it to become saturated with water, and what would happen to that same parcel of air if it began to sink, and what type of surface pressure would you expect for each? Rising Parcel: Leads to expansion, cools, relative humidity rises, RH=100% condensation and precipitation Sinking Air: High pressure(at surface), clear skies 4) What are the definitions and values for dry adiabatic lapse rate (DALR) and saturated adiabatic lapse rate (SALR)? DALR – Rate at which T drops as air ascends, under 100% - Close to 1.0 degrees C/100 m SALR – Once water in the air begins to condense, it releases its latent heat - Begins to condensate at (LCL) lifting condensation limit 5) Besides DALR and SALR, what else do you need to know about the atmosphere
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This note was uploaded on 04/16/2008 for the course SYGN 101 taught by Professor Shorey during the Spring '08 term at Mines.

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19 Weather_06 - Weather Objectives 1 Why does the wind blow Air moves from high to low pressure-Differential pressures caused by different heating

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