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Content which is affiliated solely with the Global Precipitation Measurement Mission.

Variations in simulated GMI brightness temperatures due to varying particlVariations in Simulated GMI Brightness Temperatures due to Varying Particle Size Distribution Models and Hydrometeor Characteristics in a Severe Hailstorm

Submitted by LisaN on
Publication Year
Authors
Leppert, K. D., and D. J. Cecil
Journal
J. Appl. Meteor. and Climatol.
Volume
64(3)
Page Numbers
237–266
DOI
10.1175/JAMC-D-24-0110.1
Mission Affiliation
GPM
Major Category
GPM

Impacts of the Transition from DMSP SSMIS to WSF-M MWI on IMERG

Date Last Updated
August 8th, 2025
Document Description

The Integrated Multi-satellitE Retrievals for the Global Precipitation Measurement (GPM) mission (IMERG) combines precipitation retrievals from all available low-orbit passive microwave (PMW) data, together with geosynchronous infrared (GEO-IR) providing baseline retrievals to compute merged global precipitation every half hour. The IMERG Early Run includes forward propagation of PMW data, while the Late Run also uses backward propagation. IMERG includes the Defense Meteorological Satellite Program (DMSP) Special Sensor Microwave Imager/Sounder (SSMIS) constellation operated by the U.S.

File Downloads
SSMIS-MWI_transition.pdf

End of SSMIS data coming to GPM Near Real-time Products

Department of Defense (DOD) FNMOC has announced its intention to shut down the current flow of operational SSMIS data on 30 June 2025. This is much earlier than the earlier announced date of September 2026, and would suspend the use of F16, F17, and F18 SSMIS data in GPM PPS. We are vigorously pursuing alternatives for continuing access to SSMIS data, but it seems likely that there will be an interruption, and perhaps end, to the SSMIS data streams. The lack of these 3 conically scanning radiometers will impact the accuracy of all IMERG products as they will have data from 3 fewer radiometers

Intercomparison between Ground-Based and Spaceborne Radars’ Echo-Top Heights: Application to the Multi-Radar Multi-Sensor and the Global Precipitation Measurement

Submitted by LisaN on
Publication Year
Authors
Mandement, M., P. E. Kirstetter, H. Reeves
Journal
J. Appl. Meteor. Climatol.
Volume
62(8)
Page Numbers
917–928
DOI
10.1175/JAMC-D-22-0146.1
Mission Affiliation
GPM
Major Category
GPM

Hydrologic evaluation of the global precipitation measurement mission over the U.S.: Flood peak discharge and duration

Submitted by LisaN on
Publication Year
Authors
Woods, D., P.E. Kirstetter, H. Vergara, J. Duarte, J. Basara
Journal
J. Hydrology
Volume
617(Part C)
DOI
10.1016/j.jhydrol.2023.129124
Mission Affiliation
GPM
Major Category
GPM
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