The Global Precipitation Measurement (GPM) Satellite Mission


The GPM Mission

NASA's Global Precipitation Measurement Mission (GPM) measures precipitation from space. GPM launched from the Tanegashima Space Center, Japan on February 27, 2014. GPM mission data will advance our understanding of water and energy cycles and extend the use of precipitation data to directly benefit society.

The way satellites "see" rain is not the same as the way rain gauges collect precipitation on the ground, and to make sure the algorithms used by the satellites to provide rain totals are working well, we need to do what is called ground validation. Using a simple rain gauge, teachers and students can help collect data to explore the question, "How do ground-based observations compare to satellite rainfall estimates?" For more information on the GPM-GLOBE Student Field Campaign, click on the "How to Participate" and other links on the left.

Students reading a rain gauge during an outdoor education program in Montgomery County, Maryland.
Image Credit: NASA/Dorian Janney


To learn more about the NASA GPM Mission, click here

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