Airmass

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Information about Airmass

Published on October 5, 2007

Author: radgeog

Source: slideshare.net

Description

Meteorology and air masses

Air Masses John Harris - Head of Geography - Radley College - UK [email_address] http://geography.radley.org.uk

What is an air mass? An air mass is a large body of air with similar temperature and/or humidity . Air masses form in stable “source regions” such as in the sub tropics or near to the poles.

An air mass is a large body of air with similar temperature and/or humidity .

Air masses form in stable “source regions” such as in the sub tropics or near to the poles.

Air Mass types Five main air masses affect Europe

Air mass classification Tropical Maritime (Tm) - mild and moist Tropical Continental (Tc) - warm and dry Polar Maritime (Pm) - cool and moist Polar Continental (Pc) - cold and dry Arctic Maritime (Am) - cold and moist

Tropical Maritime (Tm) - mild and moist

Tropical Continental (Tc) - warm and dry

Polar Maritime (Pm) - cool and moist

Polar Continental (Pc) - cold and dry

Arctic Maritime (Am) - cold and moist

Tropical Maritime Tm air masses come from the south west and originate over the Azores or the Caribbean. They bring mild, damp, cloudy weather.

Tropical Continental Tc air masses come from the south and originate over dry northern Africa . They bring hot, dry weather and summer heatwaves.

Polar Maritime Pm air masses come from the north-west and originate over the north Atlantic. They bring cool, moist conditions.

Polar Continental Pc air masses come from the east and originate over Scandinavia and Russia . They bring clear dry conditions - cold in winter, warm in summer.

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