EVERYDAY SCIENCE

Detailed explanation-1: -If an air mass is humid and cold and originated over the ocean in the high latitudes, it would be called a maritime Polar (mP) air mass.

Detailed explanation-2: -Maritime polar (mP) is also cold but moist due to its origination over the oceans.

Detailed explanation-3: -Polar maritime This air mass has its origins over northern Canada and Greenland and reaches the British Isles on a north-westerly air stream. Polar maritime is the most common air mass to affect the British Isles.

Detailed explanation-4: -summer to the North. Maritime polar (mP): Cool and moist. They usually bring cloudy, damp weather to the USA. Maritime polar air masses form over the northern Atlantic and the northern Pacific oceans.

Detailed explanation-5: -Maritime air masses form over water and are humid. Continental air masses form over land and are dry. Therefore, an air mass that develops over northern Canada is called a continental polar air mass and is cold and dry.