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tropical air mass

atmospheric science
Also known as: mT, mT air mass, maritime Tropical air mass

Quick Summary

A tropical air mass originates in the tropics and is characterized by high temperatures and humidity. These air masses form when the atmosphere remains over a large, uniform surface, like the ocean, long enough to acquire its temperature and moisture properties. Tropical air masses are a significant source of moisture and are responsible for much of the year's rainfall.12

In meteorology, air masses are classified by their source regions. Tropical air masses are distinct from polar air masses, which form in higher latitudes and are cold. The interaction and mixing of polar and tropical air masses occur in the middle latitudes.23

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