Subtropical ridge
A diagram showing the relative positions of the subtropical ridge. Where it normally is, winds are nearly calm, and locations under its normal location are known as lying in the horse latitudes
The subtropical ridge is a large belt of high pressure around 30ºN in the Northern Hemisphere and 30ºS in the Southern Hemisphere. It is characterized by mostly calm winds. Air flows out from its center toward the upper and lower latitudes of each hemisphere, creating both the trade winds and the westerlies.
Subtropical Ridge Media
A diagram showing the relative positions of the horse latitudes
The subtropical ridge shows up as a large area of black (dryness) on this water vapor satellite image from September 2000.
Mean July subtropical ridge position
Other websites
- Webster's Online Dictionary Archived 2007-09-30 at the Wayback Machine
- Physical Geography - The Global Environment Archived 2006-09-23 at the Wayback Machine
- Winds and the Global Circulation System
