Infrared image of Hurricane Bill, acquired from the Atmospheric Infrared Sounder instrument on NASA's Aqua spacecraft.
Infrared image of Hurricane Bill from the Atmospheric Infrared Sounder (AIRS) taken August 20, 2009.
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Among the research areas studied by NASA's "A-Train," a string of NASA Earth-monitoring satellites that orbit one behind the other on the same track, are tropical cyclones -- the collective term for tropical depressions, tropical storms, hurricanes and typhoons. Included are JPL's Atmospheric Infrared Sounder instrument on NASA's Aqua spacecraft; CloudSat; and the Microwave Limb Sounder and Tropospheric Emission Spectrometer instruments on NASA's Aura spacecraft.

For more information, please visit http://www.nasa.gov/mission_pages/hurricanes/features/atrain.html

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