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Indian Ocean Dipole (IOD) & Bjerknes Feedback: How Cross-Basin Sea Surface Temperature Gradients and Ocean-Atmosphere Coupling Steer Global Weather Extremes
WEATHER FORECASTING

Indian Ocean Dipole (IOD) & Bjerknes Feedback: How Cross-Basin Sea Surface Temperature Gradients and Ocean-Atmosphere Coupling Steer Global Weather Extremes

On the windward bluffs of Mombasa, the air is thick enough to chew. The barometer on a ship moored in Kilindini Harbour drifts downward through the late afternoon, its needle sagging as if burdened by the immense volume of water vapor piling into the lower troposphere. Overhead, the sky thickens from a milky haze into a bruised, indigo shelf cloud that stretches from horizon to horizon. When the sky finally unburdens itself, it does not merely rain; it detonates. The red clay soils of the East African littoral, overwhelmed in minutes, liquefy into torrents that carve through villages and overwhelm river basins. The air smells acutely of ionized ozone, drenched earth, and the warm, vegetal breath of a tropical continent receiving twice its seasonal entitlement of moisture.

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