Air masses - Air masses -body of air fairly uniform temp...

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Air masses -body of air fairly uniform temp and moisture characteristics this exsits over a large reason - source region air mass classification -thermal characteristics based on lat. Zones -Moisture content based on unde rlying surface temp and moisture classes -Temperature classes -arctic and Antarctic -polar -tropical -equatorial moisture classes -maritim -continental air mass properties see figure 8.2 North American air masses see figure 8-2 Fronts -the boundry between two air masses -four main types are -stationary front - front that is not moving -minimal interaction between air masses -cold - when cold air moves into warm air mass -cold air is more dense, warmer air is sent over -steep slope at front causes rapid uplift -warm - warm air moves into cooler air -warm air is forced up -less turbulence and instability than cold front -occluded - occurs when a cold front overtakes a warm from
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-meeting of two cold masses midlatitude cyclones - Also know as traveling low pressure systems, or extratropical cyclone and wave cyclones - Smaller than general circulation features - Low pressure cell - Migratory and transient - Relatively brief Octber 5 Humid continental-dfa, dfb Subarctic -long winters-short mild summers
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This note was uploaded on 10/27/2010 for the course RLST 2332 taught by Professor Mr.gayley during the Spring '10 term at Claremont McKenna College.

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Air masses - Air masses -body of air fairly uniform temp...

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