Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because the ____.

Question

Quizplus · Accepted Answer

The prevailing westerly winds aloft play a significant role in the distribution of air masses, including maritime Polar (mP) air masses. These westerly winds facilitate the movement of mP air masses from the Pacific Ocean to the North American continent more efficiently than from the Atlantic Ocean, where such air masses would have to move against the prevailing wind direction to affect the Atlantic coast.

Wintertime MP Air Masses Are Less Common Along the Atlantic