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Get the latest GPM, TRMM, and ground validation news, and learn about Earth's weather and climate.

Features

Mid-morning peak in light rainfall appears as clouds and fog at Purchase Knob in the Great Smoky Mountains National Park.

On Top of the Smokies, All Covered in Light Rain

The Southern Appalachians are one of the rainiest places in the United States, and scientists have discovered that much of it is difficult to detect ...

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NASA and JAXA personnel in the clean room with the DPR

Handover of Japan-built Radar to NASA

On March 30, the Japan Aerospace Exploration Agency officially handed off a new satellite instrument to NASA.

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DPR instrument for GPM arriving at Goddard

NASA GPM Satellite's Dual-frequency Precipitation ...

The Dual-frequency Precipitation Radararrived on Friday, March 16 and was unloaded today at Goddard.

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The Global Precipitation Measurement Microwave Imager for undergoes electromagnetic interference and compatibility testing at Ball Aerospace.

GPM Microwave Imager Instrument Arrives at Goddard

The Global Precipitation Measurement Microwave Imager (GMI) instrument has arrived at Goddard for integration into NASA's upcoming Earth science ...

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This instrument measures microwaves that are naturally emitted from Earth's surface to determine water vapor and cloud and liquid water in the air column.

NASA's GCPEX Mission: What We Don't Know about Snow

Scientists have shown that it is possible to detect and measure snow from space, but much remains unknown about snow.

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Image of NASA's DC-8 taking off with snowflakes overlaid.

Airborne Campaign to Measure Falling Snow

NASA's DC-8 research plane will begin six weeks of flights over Canada next week in support of a difficult task of the upcoming Global Precipitation ...

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GPM satellite on the high capacity centrifuge

Global Precipitation Satellite Takes a Ride

In the clean room at NASA Goddard Space Flight Center, the GPM mission's Core satellite is steadily taking shape.

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Latest Images

NASA and JAXA Officials Examine the DPR at Goddard

Left to right: Peter Hildebrand (NASA), Masahiro Kojima (JAXA) and Takeshi Miura (JAXA) in the clean room with the DPR.

Left to right: Peter Hildebrand (NASA), Masahiro Kojima (JAXA) and Takeshi Miura (JAXA) in the clean room with the DPR.

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NASA and JAXA Officials at the DPR Sign-Off Event

JAXA DPR Project Manager Masahiro Kojima (seated left) formally signed over the DPR to GPM Project Manager Art Azarbarzin (seated right). Behind from left to right: Minoru Okumura (NTSpace), Takeshi Miura (JAXA), Kai Hiroki (JAXA), Yasutoshi Hyakusoku (JAXA), Candace Carlisle (NASA), Arthur Hou (NAS

JAXA DPR Project Manager Masahiro Kojima (seated left) formally signed over the DPR to GPM Project Manager Art Azarbarzin (seated right). Behind from left to right: Minoru Okumura (NTSpace), Takeshi ...

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GPM High Gain Antenna System (HGAS) Testing

The GPM High Gain Antenna System (HGAS) in integration and testing at Goddard Space Flight Center.

The GPM High Gain Antenna System (HGAS) in integration and testing at Goddard Space Flight Center.

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Integration and Testing of the GPM Core Observatory

Engineers working in a lab on integration and testing of the GPM core observatory.

Engineers are building and testing the GPM Core Observatory at Goddard Space Flight Center.

Each time a new component is added to the spacecraft, rigorous testing is conducted to ensure ...

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GPM Core Observatory Centrifuge Testing

GPM Core Observatory on the arm of the High-Capacity Centrifuge at Goddard Space Flight Center

NASA technicians spun the GPM satellite up to just over 10 RPM at Goddard Space Flight Center’s High-Capacity Centrifuge facility on March 31st, 2011. At that speed, the spin exerted a lateral ...

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Building the GPM Microwave Imager (GMI)

A test technician completes the final electrical integration of the GPM Microwave Imager (GMI) at Ball Aerospace.

A test technician completes the final electrical integration of the GPM Microwave Imager (GMI) at Ball Aerospace.

Credit: Ball Aerospace

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GPM Core Observatory Instruments

Diagram of the GPM Core Observatory, with labels pointing out the GPM Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR)

A diagram of the GPM Core Observatory showing the GMI and DPR Instruments.

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Mission News

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Mission Overview

    Global Precipitation Measurement (GPM) is an international satellite mission that will set a new standard for precipitation measurements from space, providing the next-generation observations of rain and snow worldwide every three hours. The GPM mission data will advance our understanding of the water and energy cycles and extend the use of precipitation data to directly benefit society.

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