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Air Masses

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Page 1: Air Masses. Changes in weather are caused by the movement of air masses

Air Masses

Page 2: Air Masses. Changes in weather are caused by the movement of air masses

Changes in weather are caused by the movement of air masses.

Page 3: Air Masses. Changes in weather are caused by the movement of air masses

An AIR MASS is a very large volume or block of air w/ similar temp. & humidity (moisture) throughout.

Page 4: Air Masses. Changes in weather are caused by the movement of air masses

An air mass’s humidity & temp. depend on the area where it formed or its source region.

Page 5: Air Masses. Changes in weather are caused by the movement of air masses

Therefore you name air masses to describe their temperature & humidity.

Moisture descriptions Temp. descriptionsContinental (dry) Polar

Maritime (wetter) Tropical

Page 6: Air Masses. Changes in weather are caused by the movement of air masses

The 4 major masses are:The 4 major masses are:

Type/NameWhere if Forms

Temperature

Humidity

Maritime Polar

Maritime Tropical

Continental Polar

Continental Tropical

Page 7: Air Masses. Changes in weather are caused by the movement of air masses

Air masses and source regions for North American

Page 8: Air Masses. Changes in weather are caused by the movement of air masses

Air masses and source regions for the world

Page 9: Air Masses. Changes in weather are caused by the movement of air masses

AIR FRONTS

Page 10: Air Masses. Changes in weather are caused by the movement of air masses

When two different air

masses meet & don’t mix they make fronts.

Page 11: Air Masses. Changes in weather are caused by the movement of air masses

Fronts bringing changes in the

weather & possibly precipitation.

Page 12: Air Masses. Changes in weather are caused by the movement of air masses

There are four types of fronts

• Cold

• Warm

• Stationary

• Occluded

Page 13: Air Masses. Changes in weather are caused by the movement of air masses

https://s-media-cache-ak0.pinimg.com/originals/80/6d/36/806d36c0404d3afec7f55b24615a8092.jpg

Page 14: Air Masses. Changes in weather are caused by the movement of air masses

After the frontthe weather usually is clear and sunny


Air Masses cont

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