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Dust Dampens Hurricane Formation
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Published April 18, 2007
Warm sea surface temperatures help fuel hurricanes, and in 2006, those temperatures were cooler than expected. Why the difference between 2005 and 2006? William Lau of NASA Goddard Space Flight Center and Kyu-Myong Kim of University of Maryland-Baltimore County think the answer comes from the Sahara, namely dust.
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La Niña In Progress
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Published February 9, 2006
La Niña is an occurrence of unusually cold water temperatures in the Pacific Ocean along the equator (the precise area affected is outlined in black in the image above). La Niña and its opposite, El Niño, are linked to seesaw variations in air pressure over the tropical Pacific and affect weather patterns across the globe. NASA monitors developing El Ni&ntidle;o and La Niña events by observing sea surface temperatures. This image compares the water temperatures observed in late January 2006 to long-term average conditions for that time of year. The recent data were collected by the Advanced Microwave Scanning Radiometer for EOS (AMSR-E). Red shows where sea surface temperatures are warmer than normal and blue where they are colder than normal.
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