Air mass

File:Air masses.svg

Bergeron classification of global air masses

An air mass is a volume of air defined by its temperature and water vapor content. Air masses cover many hundreds or thousands of square miles. Colder air masses are called polar or arctic, while warmer air masses are called tropical.

Air Mass Media

• Airmassesorigin.png

  Different air masses which affect North America as well as other continents, tend to be separated by frontal boundaries

• Cold front (left) above Zdiměřice in Czechia, 2017.jpg

  Picture of cold front (left part of the image) moving over the Czech Republic

• Snow Clouds in Korea.jpg

  Lake-effect snow bands near the Korean Peninsula