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warn_icon.gif IMPORTANT MESSAGE Dec 05, 2014    PPS Updating GPM Radiometer Products due to Sun Angle Corrections   

 This is a minor update and only the letter was incremented.

DataType Current New
1AGMI V03A V03B
1BGMI V03B V03C
1CF16SSMIS V02A V02B
1CF17SSMIS V02A V02B
1CF18SSMIS V02A V02B
1CGCOMW1AMSR2 V03A V03B
1CGPMGMI V03B V03C
1CGPMGMI_R V03B V03C
1CMETOPAMHS V02A V02B
1CMETOPBMHS V02A V02B
1CMT1SAPHIR V02A V02B
1CNOAA18MHS V02A V02B
1CNOAA19MHS V02A V02B
1CNPPATMS V02A V02B
1CTRMMTMI V02A V02B
2AGPROFF16SSMIS V03A V03B
2AGPROFF16SSMIS_CLIM V03A V03B
2AGPROFF17SSMIS V03A V03B
2AGPROFF17SSMIS_CLIM V03A V03B
2AGPROFF18SSMIS V03A V03B
2AGPROFF18SSMIS_CLIM V03A V03B
2AGPROFGCOMW1AMSR2 V03B V03C
2AGPROFGCOMW1AMSR2_CLIM V03B V03C
2AGPROFGPMGMI V03C V03D
2AGPROFGPMGMI_CLIM V03C V03D
2AGPROFMETOPAMHS V03B V03C
2AGPROFMETOPBMHS V03B V03C
2AGPROFNOAA18MHS V03B V03C
2AGPROFNOAA19MHS V03B V03C
2AGPROFTRMMTMI V03A V03B
2AGPROFTRMMTMI_CLIM V03A V03B
2BCMB V03C V03D
3CMB V03C V03D
3CMB_DAY V03C V03D
3GPROFF16SSMIS V03B V03C
3GPROFF16SSMIS_CLIM V03B V03C
3GPROFF16SSMIS_DAY V03B V03C
3GPROFF16SSMIS_DAY_CLIM V03B V03C
3GPROFF17SSMIS V03B V03C
3GPROFF17SSMIS_CLIM V03B V03C
3GPROFF17SSMIS_DAY V03B V03C
3GPROFF17SSMIS_DAY_CLIM V03B V03C
3GPROFF18SSMIS V03B V03C
3GPROFF18SSMIS_CLIM V03B V03C
3GPROFF18SSMIS_DAY V03B V03C
3GPROFF18SSMIS_DAY_CLIM V03B V03C
3GPROFGCOMW1AMSR2 V03B V03C
3GPROFGCOMW1AMSR2_CLIM V03B V03C
3GPROFGCOMW1AMSR2_DAY V03B V03C
3GPROFGCOMW1AMSR2_DAY_CLIM V03B V03C
3GPROFGPMGMI V03C V03D
3GPROFGPMGMI_CLIM V03C V03D
3GPROFGPMGMI_DAY V03C V03D
3GPROFGPMGMI_DAY_CLIM V03C V03D
3GPROFMETOPAMHS V03C V03D
3GPROFMETOPAMHS_DAY V03C V03D
3GPROFMETOPBMHS V03C V03D
3GPROFMETOPBMHS_DAY V03C V03D
3GPROFNOAA18MHS V03C V03D
3GPROFNOAA18MHS_DAY V03C V03D
3GPROFNOAA19MHS V03C V03D
3GPROFNOAA19MHS_DAY V03C V03D
3GPROFTRMMTMI V03B V03C
3GPROFTRMMTMI_CLIM V03B V03C
3GPROFTRMMTMI_DAY V03B V03C
3GPROFTRMMTMI_DAY_CLIM V03B V03C

 

 Below is a table detailing the date/time when the old Product Version was halted.

DataType Product Version Version End  
1AGMI V03A 12/4/2014 10:17  
1BGMI V03B 12/4/2014 8:44  
1CF16SSMIS V02A 12/2/2014 23:18  
1CF17SSMIS V02A 12/2/2014 23:48  
1CF18SSMIS V02A 12/2/2014 23:38  
1CGCOMW1AMSR2 V03A 12/2/2014 23:02  
1CGPMGMI V03B 12/4/2014 8:44  
1CGPMGMI_R V03B 12/4/2014 5:39  
1CMETOPAMHS V02A 12/2/2014 23:14  
1CMETOPBMHS V02A 12/2/2014 22:26  
1CMT1SAPHIR V02A 11/28/2014 1:49  
1CNOAA18MHS V02A 12/2/2014 23:53  
1CNOAA19MHS V02A 12/2/2014 23:45  
1CNPPATMS V02A 12/2/2014 23:28  
1CTRMMTMI V02A 11/30/2014 22:31  
2AGPROFF16SSMIS V03A 12/2/2014 23:18  
2AGPROFF16SSMIS_CLIM V03A 8/24/2014 23:04  
2AGPROFF17SSMIS V03A 12/2/2014 23:48  
2AGPROFF17SSMIS_CLIM V03A 8/24/2014 23:44  
2AGPROFF18SSMIS V03A 12/2/2014 23:38  
2AGPROFF18SSMIS_CLIM V03A 8/24/2014 23:54  
2AGPROFGCOMW1AMSR2 V03B 12/2/2014 23:02  
2AGPROFGCOMW1AMSR2_CLIM V03B 8/24/2014 23:28  
2AGPROFGPMGMI V03C 12/2/2014 22:49  
2AGPROFGPMGMI_CLIM V03C 8/24/2014 22:57  
2AGPROFMETOPAMHS V03B 12/2/2014 23:14  
2AGPROFMETOPBMHS V03B 12/2/2014 22:26 * orbit 11432, 2014-12-01 09:16:41 to 2014-12-01 10:58:01, is awaitig data will have version V03C
       
2AGPROFNOAA18MHS V03B 12/2/2014 23:53  
2AGPROFNOAA19MHS V03B 12/2/2014 23:45  
2AGPROFTRMMTMI V03A 11/30/2014 22:31  
2AGPROFTRMMTMI_CLIM V03A 8/24/2014 23:35  
2BCMB V03C 12/3/2014 17:19  
3CMB V03C 11/30/2014 23:59  
3CMB_DAY V03C 12/1/2014 23:59  
3GPROFF16SSMIS V03B 11/30/2014 23:59  
3GPROFF16SSMIS_CLIM V03B 7/31/2014 23:59  
3GPROFF16SSMIS_DAY V03B 12/1/2014 23:59  
3GPROFF16SSMIS_DAY_CLIM V03B 8/23/2014 23:59  
3GPROFF17SSMIS V03B 11/30/2014 23:59  
3GPROFF17SSMIS_CLIM V03B 7/31/2014 23:59  
3GPROFF17SSMIS_DAY V03B 12/1/2014 23:59  
3GPROFF17SSMIS_DAY_CLIM V03B 8/23/2014 23:59  
3GPROFF18SSMIS V03B 11/30/2014 23:59  
3GPROFF18SSMIS_CLIM V03B 7/31/2014 23:59  
3GPROFF18SSMIS_DAY V03B 12/1/2014 23:59  
3GPROFF18SSMIS_DAY_CLIM V03B 8/23/2014 23:59  
3GPROFGCOMW1AMSR2 V03B 11/30/2014 23:59  
3GPROFGCOMW1AMSR2_CLIM V03B 7/31/2014 23:59  
3GPROFGCOMW1AMSR2_DAY V03B 12/1/2014 23:59  
3GPROFGCOMW1AMSR2_DAY_CLIM V03B 8/23/2014 23:59  
3GPROFGPMGMI V03C 11/30/2014 23:59  
3GPROFGPMGMI_CLIM V03C 7/31/2014 23:59  
3GPROFGPMGMI_DAY V03C 12/1/2014 23:59  
3GPROFGPMGMI_DAY_CLIM V03C 8/23/2014 23:59  
3GPROFMETOPAMHS V03C 11/30/2014 23:59  
3GPROFMETOPAMHS_DAY V03C 12/1/2014 23:59  
3GPROFMETOPBMHS V03C 11/30/2014 23:59  
3GPROFMETOPBMHS_DAY V03C 11/30/2014 23:59  
3GPROFNOAA18MHS V03C 11/30/2014 23:59  
3GPROFNOAA18MHS_DAY V03C 12/1/2014 23:59  
3GPROFNOAA19MHS V03C 11/30/2014 23:59  
3GPROFNOAA19MHS_DAY V03C 12/1/2014 23:59  
3GPROFTRMMTMI V03B 10/31/2014 23:59  
3GPROFTRMMTMI_CLIM V03B 7/31/2014 23:59  
3GPROFTRMMTMI_DAY V03B 11/29/2014 23:59  
3GPROFTRMMTMI_DAY_CLIM V03B 8/23/2014 23:59  

 

Information on this page is available from the Precipitation Measurement Missions GPM web page (http://pmm.nasa.gov/GPM):

You can access data from here for the GPM mission or under the Data Holdings.

GPM Mission Concept

The Global Precipitation Measurement (GPM) mission is an international network of satellites that provide the next-generation global observations of rain and snow. Building upon the success of the Tropical Rainfall Measuring Mission (TRMM), the GPM concept centers on the deployment of a “Core” satellite carrying an advanced radar / radiometer system to measure precipitation from space and serve as a reference standard to unify precipitation measurements from a constellation of research and operational satellites. Through improved measurements of precipitation globally, the GPM mission will help to advance our understanding of Earth's water and energy cycle, improve forecasting of extreme events that cause natural hazards and disasters, and extend current capabilities in using accurate and timely information of precipitation to directly benefit society. GPM, initiated by NASA and the Japan Aerospace Exploration Agency (JAXA) as a global successor to TRMM, comprises a consortium of international space agencies, including the Centre National d’√Čtudes Spatiales (CNES), the Indian Space Research Organization (ISRO), the National Oceanic and Atmospheric Administration (NOAA), the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT), and others. The GPM Core Observatory is scheduled for launch in mid-2014.

Illustration of the GPM satellite constellation.
Illustration of the GPM satellite constellation.

Building upon TRMM’s Legacy

The Tropical Rainfall Measuring Mission (TRMM), launched by NASA and JAXA in 1997, uses both active and passive microwave instruments to measure rainfall in the tropics. It also provides a foundation for merging rainfall information from other satellites. TRMM has shown the importance of taking observations from a non-Sun-synchronous orbit at different times of the day, between observations by polar orbiting sensors at fixed times of the day, to improve near real-time monitoring of hurricanes and accurate estimation of time-accumulation of rain volume. The GPM Core Observatory will continue this  sampling from a non-Sun-synchronous orbit and extend coverage to higher latitudes to provide a global view of precipitation.

The GPM Core Observatory design is an extension of TRMM’s highly successful rain-sensing package, which focused primarily on heavy to moderate rain over tropical and subtropical oceans. Since light rain and falling snow account for significant fractions of precipitation occurrences in middle and high latitudes, a key advancement of GPM over TRMM is the extended capability to measure light rain (< 0.5 mm hr-1), solid precipitation and the microphysical properties of precipitating particles. This capability drives the designs of both the active and passive microwave instruments on GPM. The Core Observatory will then act as a reference standard for the precipitation estimates acquired by the GPM constellation of sensors.

GPM Core Observatory

The GPM Core Observatory will carry the first space-borne Ku/Ka-band Dual-frequency Precipitation Radar (DPR) and a multi-channel GPM Microwave Imager (GMI). The DPR instrument, which will provide three dimensional measurements of precipitation structure over 78 and 152 mile (125 and 245 km) swaths, consists of a Ka-band precipitation radar (KaPR) operating at 35.5 GHz and a Ku-band precipitation radar (KuPR) operating at 13.6 GHz. Relative to the TRMM precipitation radar, the DPR is more sensitive to light rain rates and snowfall. In addition, simultaneous measurements by the overlapping of Ka/Ku-bands of the DPR can provide new information on particle drop size distributions over moderate precipitation intensities. In addition, by providing new microphysical measurements from the DPR to complement cloud and aerosol observations, GPM is expected to provide further insights into how precipitation processes may be affected by human activities.

The GMI instrument is a conical-scanning multi-channel microwave radiometer covering a swath of 550 miles (885 km) with thirteen channels ranging in frequency from 10 GHz to 183 GHz. The GMI uses a set of frequencies that have been optimized over the past two decades to retrieve heavy, moderate and light precipitation using the polarization difference at each channel as an indicator of the optical thickness and water content.

Swath covered by GPM sensors.
Swath covered by GPM sensors

GPM Science and Applications

GPM will provide global precipitation measurements with improved accuracy, coverage and dynamic range for studying precipitation characteristics. GPM is also expected to improve weather and precipitation forecasts through assimilation of instantaneous precipitation information. Relative to TRMM, the enhanced measurement and sampling capabilities of GPM will offer many advanced science contributions and societal benefits:

Learn more about GPM's science objectives.

Learn more about GPM's applications.

 

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Last updated: Mar 26, 2015 12:08 PM ET