Question

interpreting air mass by location of formation
use the drop - down menu to identify which type of air mass would form at each point on the map.
point a
point b

Explanation:

Step1: Analyze Point A

Point A is located over the interior of Canada, a continental (land - based) region with cold temperatures (high latitude, near polar regions). Continental polar (cP) air masses form over cold, dry land masses in polar regions. So Point A should be a continental polar air mass.

Step2: Analyze Point B

Point B is located over the ocean (Pacific Ocean, off the west coast of North America), at a high latitude (near the polar region of the ocean). Maritime polar (mP) air masses form over cold, moist ocean areas in polar regions. So Point B should be a maritime polar air mass.

Answer:

Point A: continental polar (cP)
Point B: maritime polar (mP)