- Mission Overview
- Extreme Weather
- PMM Science Team
- Science Team Login
- Science Overview
- Research Topics
- Storm Structure and Mesoscale Dynamics
- Precipitation Microphysics
- Global Water Cycle
- Climate Change
- Precipitation Algorithms
- Radar Algorithms
- Radiometer Algorithms
- Combined Algorithms
- Multi-Satellite Algorithms
- Ground Validation
- Direct Statistical Validation
- Physical Validation
- Integrated Hydrological Validation
- Field Campaigns
- Data Access
GPM Flight Project
The GPM Core Observatory will serve as a reference standard to a constellation of research and operational microwave sensors aimed at providing uniformly calibrated precipitation measurements around the globe every 2-4 hours for scientific research and societal applications. The GPM Flight Project is responsible for providing the following components:
- GPM Core Observatory
- GPM Microwave Imager (GMI) radiometer
- Mission Operations Center for the Core Observatory
- Ground Validation System
- Precipitation Processing System (PPS) operations
The GPM Flight Project also works with internal and external NASA partners to coordinate other elements of the mission.
Carrying both a dual frequency radar instrument and a passive microwave radiometer, the Core Spacecraft will serve as a calibration standard for the other members of the GPM spacecraft constellation. The Core Spacecraft is being developed and tested in-house at NASA Goddard Space Flight Center. The GPM Core Observatory planned orbit inclination (65 degrees) is such that it enables the orbit to cut across the orbits of other microwave radiometers, sample the latitudes where nearly all precipitation occurs, and sample at different times of day. The GPM Core Observatory (GMI) instrument science...
One of the prime instruments for the GPM Core Observatory is called the Dual-frequency Precipitation Radar (DPR). The DPR consists of a Ku-band precipitation radar (KuPR) and a Ka-band precipitation radar (KaPR). The KuPR (13.6 GHz) is an updated version of the highly successful unit flown on the TRMM mission. The KuPR and the KaPR will be co-aligned on the GPM spacecraft bus such that that the 5 km footprint location on the earth will be the same.
The Global Precipitation Measurement (GPM) Microwave Imager (GMI) instrument is a multi-channel, conical- scanning, microwave radiometer serving an essential role in the near-global-coverage and frequent-revisit-time requirements of GPM. The instrumentation enables the Core spacecraft to serve as both a precipitation standard and as a radiometric standard for the other GPM constellation members. The GMI is characterized by thirteen microwave channels ranging in frequency from 10 GHz to 183 GHz. In addition to carrying channels similar to those on the Tropical Rainfall Measuring Mission (TRMM...
GPM is currently in the Implementation Phase C.
+ May 2011, Flight spacecraft integration is in progress at Goddard Space Flight Center
Core spacecraft : 2014
Workshops and Conferences
4th GPM International GV Workshop
Helsinki, Finland , June 21-23, 2010
Tuesday, April 9, 2013The 3rd NOAA User Workshop on the Global Precipitation Measurement Mission: Proving Ground was held from April 2 - 4th at the Earth System Science Interdisciplinary Center (ESSIC), University of Maryland in College Park, MD. The 3-day workshop was...
Wednesday, March 20, 2013The NASA Precipitation Measurement Missions (PMM) Science Team for the TRMM and GPM missions met on March 18-21, 2013 in Annapolis, MD. This meeting included oral, poster, and evening working group sessions covering mission/program status,...
Friday, March 15, 2013The GPM Core Observatory is continuing its environmental testing program at NASA's Goddard Space Flight Center. Following the completion of thermal vacuum testing in January 2013, the Core Observatory team started the Electromagnetic Interference (...
Thursday, January 31, 2013The GPM Core Observatory completed thermal vacuum testing at NASA's Goddard Space Flight Center in Greenbelt, Md. on Jan. 16, 2013. After twelve days to carefully remove the testing equipment, stow the High Gain Antenna and GPM Microwave Imager, and...