description GPM Core Observatory Overview
NASA/JAXA Global Precipitation Measurement Core Observatory launched in 2014 to measure global rain and snowfall rates, improving weather forecasting and climate science.
insights Why this score
GPM Core Observatory ranks #60 of 101 in the Spacecraft ranking, behind ATV (Automated Transfer Vehicle), ahead of Gemini 3.
Strong NASA-JAXA precipitation mission improving weather and climate data, respected operational science platform.
help GPM Core Observatory FAQ
What does the GPM Core Observatory measure?
The spacecraft measures the location, intensity and three-dimensional structure of rain and snow. Its observations help calibrate a wider international satellite constellation that produces frequent global precipitation maps.
Which agencies built the GPM Core Observatory?
GPM is a joint mission of NASA and the Japan Aerospace Exploration Agency, commonly called JAXA. Its principal instruments are the NASA-provided GPM Microwave Imager and the JAXA-provided Dual-frequency Precipitation Radar.
How did GPM improve on the earlier TRMM mission?
GPM expanded precipitation measurement beyond the tropical focus of the Tropical Rainfall Measuring Mission. After launching in 2014, it also improved the observation of light rain and falling snow at higher latitudes.
How are GPM measurements used in weather forecasting?
Forecasters and researchers use GPM data to track storms, estimate rainfall accumulation and improve flood and landslide models. The mission also supplies a consistent precipitation record for studying climate and the global water cycle.
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