Retrieving "Southern Oscillation Index Soi" from the archives

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1. El Nino Events

   Linked via "Southern Oscillation Index (SOI)"

   The fundamental mechanism driving El Niño is a weakening or reversal of the prevailing trade winds (easterlies) across the equatorial Pacific Ocean. In the canonical "neutral" state, the Walker Circulation maintains a steep east-west gradient in sea surface temperature, with warm water piled up in the western Pacific Ocean (the Maritime Continent) and cooler, nutrient-rich water upwelling near t…