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?

Question

Quizplus · Accepted Answer

When the lower layers of an air mass become warmer than they were originally, it indicates that the air mass is moving over a warmer surface. This is denoted by adding the letter 'k' to the air mass classification code, indicating that the air mass is colder than the surface over which it is moving.

An Air Mass Moves Out of Its Source Region