Global Precipitation Measurement is a joint mission between JAXA and NASA as well as other international space agencies to make frequent observations of Earth’s precipitation. It is part of NASAs Earth Systematic Missions program and works with a constellation to provide full global coverage. GPM builds on the successes of the Tropical Rainfall Measuring Mission. The project is managed by NASAs Goddard Space Flight Center, and consists of a GPM Core Observatory satellite assisted by a constellation of spacecraft from other agencies and missions. The Core Observatory satellite measures the two and three dimensional structure of Earth’s precipitation patterns and provides a new standard for the rest of the satellite constellation. The GPM Core Observatory was assembled and tested at Goddard Space Flight Center, the launch occurred on February 28,2014 at 3, 37am JST on the first attempt. Agencies in the United States, Japan, India and France operate the satellites in the constellation for agency-specific goals. The DPR is a radar, providing three-dimensional maps of storm structure across its swath. The DPR has two frequencies, allowing researchers to estimate the sizes of particles and detect a wider range of precipitation rates. The Ku-band radar, similar to the PR on TRMM, covers a 245 km swath, nested inside that, the Ka-band radar covers a 120 km swath. The GMI is a sensor that observes the microwave energy emitted by the Earth. These data allow quantitative maps of precipitation across a swath that is 885 km wide and this instrument continues the legacy of TRMM microwave observations, while adding four additional channels, better resolution, and more reliable calibration. GPM produces and distributes a variety of precipitation data products. Processing takes place at the Precipitation Processing System at NASA Goddard Space Flight Center, all data from the mission is made freely available to the public on NASA websites. NASA Socials JAXA-NASA DC Cherry Blossom Event April 12,2013, at NASAs Goddard Space Flight Center in Greenbelt, Maryland GPM Media DayFriday, bharghav discuss the importance of GPM and its positive impact on Earth. In the movie the GPM satellite is launched by the Space Shuttle, a short anime film of 6 minutes, Dual frequency Precipitation Radar Special Movie, was produced by JAXA and White Fox in 2013. Official website GPM videos Official website Global Precipitation Measurement/ Dual-frequency Precipitation Radar pamphlet videos Twitter and Facebook
Artist's concept of the GPM Core Observatory
The GPM Core Observatory in the electromagnetic testing chamber at NASA Goddard Space Flight Center in March 2013. The silver disc and drum (center) is the GPM Microwave Imager, and the large block on the base is the Dual-frequency Precipitation Radar.
Full-Scale Harness Mockup Model of the Core GPM Spacecraft being used for harness assembly inside the Acoustic Chamber at GSFC.