Polar Front Jet

The polar front jet is the boundary between the polar and subtropical air masses. It often divides into north and south branches. The polar front jet marks the high  speed core of the prevailing westerlies. It is associated with the location and motion of the high and low pressure areas of the middle latitudes. The position, elevation, and wind speed of the polar front jet is variable. The position of the polar front jet tends to migrate south in the Northern Hemisphere's winter and north in the summer. Core winds increase during the winter and become less strong in the summer.
Concept Mapping Toolkit
Insitute for Human and Machine Cognition
The University of West Florida