Unformatted text preview: ________: Occur over thousands of km ________: have an annual time scale El Nino & La Nina: Normal Conditions: 12. During normal years the atmospheric circulation in the tropical pacific is dominated by __________. 13. These _____________ generate a strong equatorial current that flows westward from ____________ toward _________. 14. The ______________ current causes a large upwelling of cold water along the west coast of ____________ Origins of El Nino: 15. During the ___ century, locals along the ____ coast named the warm countercurrent El Nino....
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- Fall '11
- Equator, countercurrent El Nino