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ENSO Teleconnections and the North Atlantic Ocean An Exercise in ...

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Motivation<br />

• We are familiar with <strong>the</strong> mean state:<br />

• Strong trades push warm waters to <strong>the</strong> western<br />

Pacific<br />

• Cool water is upwelled <strong>in</strong> <strong>the</strong> eastern Pacific<br />

• The <strong>the</strong>rmocl<strong>in</strong>e slopes from deepest <strong>in</strong> west to<br />

shallowest <strong>in</strong> east<br />

• BUT: El N<strong>in</strong>o/Sou<strong>the</strong>rn Oscillation (<strong>ENSO</strong>) can<br />

occur, forc<strong>in</strong>g <strong>the</strong> system <strong>in</strong>to an anomalous<br />

state.<br />

• Trades weaken, westerly w<strong>in</strong>d bursts push warm<br />

water & ra<strong>in</strong> to <strong>the</strong> east.<br />

• <strong>Teleconnections</strong> have far-reach<strong>in</strong>g effects.<br />

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