soil moisture_climate feedbacks

soil moisture_climate feedbacks - Soil moisture-Climate...

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Soil moisture-Climate Feedbacks Erica Betts 04/10/2008
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Influence of Land-Surface Evapotranspiration on the Earth’s Climate J. Shukla and Y. Mintz Science , New Series, Vol. 215, No. 4539
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Introduction 2 experiments set at two extremes Evapotranspiration is set equal to potential evapotranspiration (evapotranspiration with moist soil and complete vegetation cover) No evaporation allowed to take place (surface devoid of any vegetation) GLAS general circulation model ran for 60 days starting with June 15 atmospheric conditions
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Conclusions For extratropical summer precipitation If there is a large amount of moisture in soil in the spring, summer months can have low or high rainfall depending on circulation If there is little moisture in the soil in spring, there will be little summer rainfall regardless of circulation Modifications to Earth’s vegetation cover can influence climate, but this experiment still too coarse to give more specific response information
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This note was uploaded on 11/07/2011 for the course EAS 8803 taught by Professor Staff during the Spring '08 term at Georgia Institute of Technology.

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soil moisture_climate feedbacks - Soil moisture-Climate...

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