Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because the
A)water is colder along the Pacific coast.
B)prevailing winds aloft are westerly.
C)source region for mP air on the Atlantic coast is western Europe.
D)water is warmer along the Atlantic coast.
E)land is colder along the Atlantic coast.

Question

Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because the
A)water is colder along the Pacific coast.
B)prevailing winds aloft are westerly.
C)​source region for mP air on the Atlantic coast is western Europe.
D)​water is warmer along the Atlantic coast.
E)​land is colder along the Atlantic coast.

Quizplus · Accepted Answer

Prevailing winds aloft are westerly along the Pacific coast, which facilitates the transport of mP air masses from the North Pacific. Along the Atlantic coast, prevailing winds aloft are generally from the west or southwest, and mP air masses do not originate from western Europe. The temperature of the water or land is not the main factor affecting the presence or absence of mP air masses.

Wintertime MP Air Masses Are Less Common Along the Atlantic