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Lecture Notes for GEO 211.00 - Earth`s Dynamic Weather with Zintambila at Illinois State (ILSTU)

Notes Information

Material Type:Class Note
Professor:Zintambila
Class:GEO 211.00 - Earth`s Dynamic Weather
Subject:Geography - Geology
University:Illinois State University
Term:Spring 2009
Keywords:
  • Cumulus Stage
  • Thunderstorms
  • Tropical Depression
  • In Front Of
  • In Front (of)
  • Cumulonimbus
  • Differences
  • Behind (of)
  • Low Temperatures
  • Equatorial Regions
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Sample Document Text

Chapter 11—Air Masses & Fronts 1. What is an air mass? a. Not wind, body of air that has its heights and covers a wide area and can measure the air masses. b. Once they develop in a certain area (source area/origin) they begin to move. They then affect each place they pass by. c. Once it develops it has 2 characteristics: i. Temperature: 1. uniform/similar (horizontal temperature) 2. acquired from source area 3. Ex. North of Canada where there are cold land temperatures, the air mass will also be cold. ii. Moisture: 1. very cold and very dry (low moisture) artic air 2. jet streams cause air mass to move d. Air mass is a distinctive, homogeneous body of air that has taken the moisture and temperature characteristics of its source regions. e. Cover a very large area f. Once they develop they move away from source region g. If once it moves from colder  warmer, the air mass will be modified, so by the time it comes to our area the temperature can increase. Same goes for the modification from warmercolder...

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