Indonesia to feel La Nina`s impact in January-March
ANTARA News, 01/09/09 14:28
Jakarta - Developing La Nina conditions are likely to continue into Northern Hemisphere Spring 2009, according to El Nino/Southern Oscillation (ENSO) diagnostic discussion issued by the US NOAA`s Climate Prediction Center (CPC) in its e-mail message from Camp Springs, Maryland, the US, on Friday.
"Therefore, based on current observations, recent trends, and model forecasts, La Nina conditions are likely to continue into the Northern Hemisphere Spring 2009," said CPC in its statement.
Despite the unusually late start to the La Nina, expected impacts during January-March 2009 include above-average precipitation over Indonesia, according to CPC.
During December 2008, negative equatorial sea surface temperature (SST) anomalies strengthened across the central and east-central Pacific Ocean.
The subsurface oceanic heat content anomalies (average temperatures in the upper 300m of the ocean) also became increasingly negative as below-average temperatures at thermocline depth strengthened in the central and eastern Pacific.
Convection remained suppressed near the International Date Line, and became more persistent near Indonesia during December, it said.
Low-level easterly winds and upper-level westerly winds also strengthened across the equatorial Pacific Ocean. Collectively, these oceanic and atmospheric anomalies reflect the development of La Nina, according to CPC.
La Ni?a is characterized by unusually cold ocean temperatures in the Equatorial Pacific, compared to El Ni?o, which is characterized by unusually warm ocean temperatures in the Equatorial Pacific.
This El Nino discussion is a consolidated effort of the National Atmospheric and Oceanic Administration (NOAA), NOAA`s National Weather Service, and their funded institutions. Oceanic and atmospheric conditions are updated weekly on the Climate Prediction Center web site.
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