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Use constraints
Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports. For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Delphine Digout, UNEP/GRID-Arendal)
Source(s)
Climate Prediction Center (CPC), National Centers for Environmental Prediction (NCEP); National Oceanic and Atmospheric Administration (NOAA).
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Uploaded on Tuesday 21 Feb 2012
by GRID-Arendal
ENSO impact on Southern Africa
Year:
2005
Author:
Delphine Digout, UNEP/GRID-Arendal
Description:
El Niño describes 'the warm phase of a naturally occurring sea surface temperature oscillation in the tropical Pacific Ocean', southern oscillation refers to 'a seesaw shift in surface air pressure at Darwin, Australia and the South Pacific Island of Tahiti' amd La Nina refers to the cooling phase of the same temperature oscillation that causes El Nino. This graphic shows how the El Nino phenomenon changed weather conditions in southern Africa in 1997-1998, and how the La Nina phenomenon changed weather conditions in the region in 1999-2000. The phenomena can cause dry and warm conditions in some areas and wet and cool conditions in others.
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