COMPOSITE SUMMER (JJAS) 200-MB WIND, 200-MB STREAMFUNCTION AND PRECIPITATION ANOMALIES*

El Niño features:

upper-level easterly wind anomalies southward shifted ITCZ

upper-level anticyclonic couplet enhanced local Hadley circulation

lower-level westerly wind anomalies dry conditions over Mexico

* Shading indicates anomalies greater than 0.25 mm day-1

10

Higgins et al. (1999)

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