Air masses of the British Isles

 

An air mass is a large body of air with the same temperature , humidity and pressure throughout. The British Isles is affected by 5 types of air masses.

Maritime = travels over sea therefore it picks up moisture
Continental= travels over land

Arctic maritime comes from the Arctic ocean. It brings very cold wet weather with snow in the winter.
Polar Maritime comes from north Atlantic ( from Greenland). It bring cold and wet weather.
Tropical maritime comes from the Atlantic and it brings warm wet weather
Tropical continental comes from northern Africa. it brings warm dry weather. It can cause heat waves in the summer.
Polar continental comes from Siberia. It brings dry cold weather.