Low level winds were near average and upper level

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Unformatted text preview: sis_monitoring/enso_advisor y/ensodisc.html • ENSO-neutral is favored into the Northern Hemisphere summer 2013. • Equatorial Sea Surface Temperatures (SST) are near average across the Pacific Ocean. • Low-level winds were near average, and upper-level winds were anomalously westerly across the equatorial Pacific. El Niño AND La Niña El x Both Both an ocean/atmosphere phenomenon phenomenon x Both affect wind, rain, and SST Both x Both occur in cycles El Niño VERSUS La Niña El x x x x x x x x Both associate with “Southern Oscillation” x Tradewinds increase Tradewinds fail x No reverse flow Reverse flow of air Elevated SST in E. Pac x Decreased SST in E. Pac x Upwelling of cold, Upwelling of cold, nutrient-rich water nutrient-rich water increased decreased x Fish thrive Fish die x Dry areas get drier Dry areas flood x Wet areas flood Wet areas dry up Lesson to be Learned Lesson x Earth phenomena are very much Earth interrelated interrelated Ocean <----> Atmosphere Bjerknes’ concept of “teleconnections” x We must understand in order to predict x Invest in soybean futures after an El Niño! x – No fish meal for cattle, farmers will use soy We’re dealing with the interplay between two very different fluids - atmosphere and ocean - in fluids the boundless dimensions of time and space. ... Abnormality in one causes abnormality in the other.... Events such as El Niños have no other.... definite starting point and no end. It’s a matter of where you break into the scene, and where you leave it. Perhaps the only thing more complex is human behavior itself. human -- Dr. Jerome Namias, Scripps Institution of Oceanography...
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