©Mark Place, 2009-2010 www.LearnEarthScience.com Air Masses.

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Presentation transcript:

©Mark Place, 2009-2010 www.LearnEarthScience.com Air Masses

AIR MASSES What's the definition? A large body of air with similar characteristics throughout

Air masses are classified based on their and amount of temperature moisture

Air masses get their characteristics based on where they form

The abbreviations used to classify air masses use the following letters: c, m, T, P, and A. For each letter, describe its property: Word Means c m T P A continental dry maritime moist Tropical warm Polar cold Arctic very cold

What would their characteristics be? mT cP warm and moist cold and dry

High or Low Pressure? mT cP H L

What type of air mass would form over each area? Please label. cA mP mP cP cT mT mT mT

World Air Mass Source Regions

Animation #1 http://www.classzone.com/books/earth_science/terc/content/visualizations/es2001/es2001page01.cfm?chapter_no=20

cP air mass dry, cool air High Pressure Area mT air mass warm, moist air Low Pressure Center

cP air mass dry, cool air High Pressure Area mT air mass warm, moist air Low Pressure Center

cP air mass dry, cool air High Pressure Area mT air mass warm, moist air Low Pressure Center

cP air mass dry, cool air High Pressure Area mT air mass warm, moist air Low Pressure Center

cP air mass dry, cool air High Pressure Area mT air mass warm, moist air Low Pressure Center