Subtropical ridge

The Subtropenfront is the equatorial side boundary of the planetary frontal zone, which extends approximately between the 30th and 60th degree of latitude. It is a zonally extending air mass limit with high thermal contrast in the subtropics.

About 30 ° north of the Subtropenfront there is another global air mass limit: the Polar Front. This represents the planetary frontal zone at the poles facing side of the Ferrel cell represents the Subtropenfront extends vertically between the subtropical high pressure belt ( on the ground) and the area of ​​Subtropenjetstreams ( in height).