A look at the five basic types of air masses that determine the US's weather
by Nancy Houser
A look at the five basic types of air masses that determine the US's weather helps people better understand the upcoming weather forecast. First developed in 1920 by a Norwegian father and son team, Vilhelm and Jacob Bjerknes, understanding about air mass patterns help is better than taking someone's word for its accuracy – or inaccuracy. Air masses and atmosphere have become very important
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