Exam 8: Air Masses

Compared to continental air masses with the same air temperature, maritime air masses:

Which of the following is NOT an air mass that influences North America?

In winter, cT brings fog, drizzle, and occasional moderate precipitation to NW Mexico and the SW United States.

An mP air mass is:

Name the three air mass types most important for the continental U.S.

The pronounced cooling that occurs on continents at high latitudes during winter leads to the formation of ________ air masses.

cT air masses are hot and dry.

In North America the_________ air mass forms only in the summer.

Lake- effect snowfall is caused by:

Air masses passing from the Gulf of Mexico over land in the Southeastern United States in the summertime are modified by the hot surface and become:

Air- mass source regions are LEAST likely to exist in:

An air- mass source region:

Why are cT air masses of minor importance for the U.S.?

Name two source regions of mP air masses.

The two most important properties that should be relatively homogeneous at the same altitude in an air mass are:

What do the letters k and w signify when added to an air mass identifier?

When an air mass is warmer than the surface over which it is moving:

What weather is associated with cA air masses?

An air mass moves out of its source region. Two days later, the lower layers of the air mass are found to be warmer than they were originally. What letter should be added to the end of the air mass's classification code?

Air masses are identified by a pair of letters, one lowercase and one uppercase. The uppercase letter (P, A, or T) refers to: