El Nino-Southern Oscillation (ENSO)
¥An important atmospheric-ocean feedback
¥Normal conditions in tropical Pacific:
¥-Warm SST, low SLP, and T-storms in W Pacific
¥-Strong subtropical highs in E Pacific
¥-Easterly winds and cool upwelling water along equator in East Pacific
¥-Prevailing southerly winds off of Peru produce cold upwelling and excellent fishing