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The role of wind-evaporation-SST feedback in tropical variability

The role of wind-evaporation-SST feedback in tropical variability

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WES: Atlantic Response<br />

Role <strong>of</strong> the WES Feedback: ITCZ response<br />

06-19-2008 CCSM Workshop 2008<br />

to ENSO<br />

• Regression <strong>of</strong> April-May-June precipitation on the ENSO January <strong>in</strong>dex<br />

for CCM3-SOM-ENSO and WES-<strong>of</strong>f-ENSO runs.<br />

• Subsidence dur<strong>in</strong>g El-N<strong>in</strong>o events<br />

• Northward movement <strong>of</strong> the ITCZ dur<strong>in</strong>g El-N<strong>in</strong>o events only <strong>in</strong> the<br />

presence <strong>of</strong> WES <strong>feedback</strong><br />

CCM3-SOM-ENSO WES-<strong>of</strong>f-ENSO

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