Question

in the United states which climate types appear to be most affected by air masses

Answer 1

"Climates in the mid-latitude zone are affected by two different air-masses. The tropical air-masses are moving towards the poles and the polar air-masses are moving towards the equator."
http://www.chacha.com/question/which-climate-types-appear-to-be-most-affected-by-air-masses

"The type of air mass at a location will determine the type of weather. Cold, dry air masses tend to dominate the central and eastern United States."
http://apollo.lsc.vsc.edu/classes/met130/notes/chapter11/na_airmasses.html

Answer 2

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