Chapter 22

Front

Maritime Polar (mP) air mass

Back

Cold and humid, forms over a cold ocean

Front

Continental Arctic (cA) air mass

Back

Extremely cold and dry, forms near the polar regions

Front

Continental Tropical (cT) air mass

Back

Warm and dry, formed over a warm landmass

Front

Continental Polar (cP) air mass

Back

Cold and dry, forms over land in high latitudes

Front

Maritime Tropical (mT) air mass

Back

Warm and humid, forms over warm oceans

Front

Cold front

Back

The leading edge of a colder and drier air mass. Indicated on a map with blue triangles pointing the direction of motion.

Front

Warm front

Back

The leading edge of a warmer and more humid air mass. Indicated on a map with red semi-circles pointing the direction of motion.

Front

Stationary front

Back

Where two air masses meet but do not move in relation to each other. Indicated on a map by alternating warm and cold front symbols

Front

Occluded front

Back

When a cold front overtakes a warm front. Indicated on a map with alternating purple triangles and semi-circles on the same side of the line.

Front

Weather with the passage of a cold front

Back

A drop in temperature and dew point, accompanied by short duration heavy rain, thunderstorms from vertically developed clouds.