are huge masses of air which are warm, cold, dry or moist depending
on the nature of the land or sea they pass over. They cover vast
areas, some of them are about 1,000,000 square km, nearly the same
size as Egypt. Air masses move over the Earth's surface and help
spread the Sun's heat around the world.
are classified according to the area they originally came from,
called their source.
masses which form over seas and oceans are called maritime (m) air
- Tropical maritime (mT) air mass develops over warm seas. It is
warm and moist.
- Polar maritime (mP) air mass forms over the sea near the poles.
It is cold and moist.
This is a picture of a region affected by Tropical maritime.
a picture of a region affected by Polar maritime.
( c ) air masses form over land.
- Tropical continental (cT) air mass develops over hot, dry land.
It is warm and dry.
- Polar continental (cP) air mass develops over land near the poles.
It is cold and dry.
>> This is a picture
of a region affected by Tropical Continental air masses
This is picture of a region affected by Polar Continental air masses.