what is the meaning of air mass

A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. Cold fronts generally move from northwest to southeast. The air behind a cold front is noticeably colder and drier than the air ahead of it. … On colored weather maps, a cold front is drawn with a solid blue line.

What air mass is warm and dry?

Continental Tropical
Maritime polar air masses can form any time of the year and are usually not as cold as continental polar air masses. responsible for the hot, humid days of summer across the South and the East. Continental Tropical (cT): Hot and very dry.

What does cP stand for in weather?

cP continental polar cold, dry, stable. cT continental tropical hot, dry, stable air aloft–unstable surface air. mP maritime polar cool, moist, and unstable. mT maritime tropical warm, moist, usually unstable.

Which air mass is the driest?

cA air masses
cA air masses are the coldest of the cold and the driest of the dry. Cold and dry cA air masses originate over the frozen hinterlands of Siberia and northern Canada, and to see just how cold and dry they can be in the winter, check out the 18Z surface analysis for December 3, 2002.

What is dry air?

In atmospheric thermodynamics and chemistry, air that is assumed to contain no water vapor. Compare moist air. Generally, air with low relative humidity.

How do you weight air?

2) You can weight it on a scale. But be very careful about this! If you fill a container (ball, balloon) with air and put it on a scale, you are measuring the weight of the ball plus the weight of the air, *minus* the weight of the volume of air that’s displaced by the inflated ball (this is the buoyant force).