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The Tropical Rainfall Measuring Mission (TRMM), a joint mission of NASA and the Japan Aerospace Exploration Agency, was launched in 1997 to study rainfall for weather and climate research. After over 17 years of productive data gathering, the instruments on TRMM were turned off on April 8. The spacecraft re-entered the Earth’s atmosphere on June 15, 2015, at 11:55 p.m. EDT, over the South Indian Ocean, according to the U.S. Strategic Command’s Joint Functional Component Command for Space through the Joint Space Operations Center (JSpOC), and most of the spacecraft was expected to burn up in the atmosphere during its uncontrolled re-entry.  

The multi-satellite 3B42*/TMPA product will continue to be produced through mid-2017 - learn more about  the transition from 3B42* to IMERG.

TRMM is a research satellite designed to improve our understanding of the distribution and variability of precipitation within the tropics as part of the water cycle in the current climate system. By covering the tropical and sub-tropical regions of the Earth, TRMM provides much needed information on rainfall and its associated heat release that helps to power the global atmospheric circulation that shapes both weather and climate. In coordination with other satellites in NASA's Earth Observing System, TRMM provides important precipitation information using several space-borne instruments to increase our understanding of the interactions between water vapor, clouds, and precipitation, that are central to regulating Earth's climate.

Extreme Weather News

Intensifying South Pacific Tropical Cyclone Winston Viewed By GPM
Tropical cyclone activity has recently increased in the South Pacific Ocean. Four tropical cyclones have formed in this area in 2016. The GPM core...
GPM Views Tropical Cyclone Forming Near Madagascar
The GPM core observatory satellite flew over a forming tropical cyclone in the South Indian Ocean between Madagascar and Reunion on February 8,...
Intensifying Atlantic Storm Examined By GPM
On February 8, 2016 at 0800 UTC (3 AM EST) the GPM core observatory satellite flew above an intensifying storm in the Atlantic Ocean off the...
GPM Examines Violent Thunderstorms in U.S.
Severe weather moved through the southern U.S. on February 2 and 3, and NASA's Global Precipitation Measurement or GPM core satellite examined the...
Extreme Precipitation Measured From Space
For over a week the weather over the continental United State's has been punctuated by extreme events. Automobiles were thrown around on January...
Intensifying Tropical Low Threatens Western Australia
So far this year, no tropical cyclones have formed near Australia. A tropical low is now getting better organized in the Indian Ocean off...

View the Extreme Weather Archive


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