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Climate impacts of El Niño Phenomenon in Latin America and the Caribbean

Climate impacts of El Niño Phenomenon in Latin America and the Caribbean

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Uploaded 21 Feb 2012 by GRID-Arendal
Year: 2005 Author: UNEP/GRID-Arendal
Description:
El Niño Southern Oscillation (ENSO) is a natural phenomenon that has occurred for centuries. Ocean and atmospheric conditions in the Pacific tend to fluctuate between El Niño (warming) and a drop in temperature in the tropical Pacific known as La Niña. The fluctuations are rather irregular, but tend to appear every three to six years. A more intensive phase of each event may last for about a year. A warming climate may contribute to an increase in frequency and intensity of the El Niño phenomenon. The impacts may be significant at regional levels. In Central America, El Niño leads to excessive rainfall along the Caribbean coasts, while the Pacific coasts will remain dry. Rainfall increases on the coasts of Ecuador, the northern part of Peru, and southern zones of Chile. In Ecuador, Peru and Bolivia there will be drought in the mountainous and Andean zones, implying retreat of glaciers with subsequent changes in the availability of water and in local biodiversity. In Colombia, Vene ...
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