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General Circulation of the Atmosphere relation to agriculture

How does this relate to agriculture?

Changes in the Hadley cell and Walker circulation can result in dramatic climate variations for many regions. In an El Niño winter, for example, the presence of the warm water in the eastern Pacific shifts the position of the subtropical jet, leading to heavy rainfall in Florida and southern Georgia.  You can learn more about how El Niño and its opposite, La Niña, affects the weather in the Southeast at www.agroclimate.org, which allows you to look at differences in climate in different years depending on the El Niño phase. 

In a warming climate, the Hadley cell could increase in length and alter the climate of regions around 30°. For example, many deserts in the northern hemisphere are located around the 30° latitude, and if the Hadley cell were to increase in length, that could cause dry conditions to move north of 30°. Ultimately, this would alter the precipitation patterns of many regions, including the Southeast.

Last modified date: Thursday, July 22, 2010 - 4:01pm