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Description

Version 08 is the current version of the data set. Older versions will no longer be available and have been superseded by Version 08.

All 1C products have a common L1C data structure, simple and generic. Each L1C swath includes scan time, latitude and longitude, scan status, quality, incidence angle, Sun glint angle, and the intercalibrated brightness temperature (Tc). One or more swaths are included in a product. The radiometer data are recalibrated to a common basis so that precipitation products derived from them are consistent. 1CGMI contains common calibrated brightness temperatures from the GMI passive microwave instrument flown on the GPM satellite. 1C-R GMI is a remapped version of 1CGMI which is explained at the end of this section. Swath S1 has 9 channels which are similar to TRMM TMI (10V 10H 19V 19H 23V 37V 37H 89V 89H). Swath S2 has 4 channels similar to AMSU-B (166V 166H 183+/-3V 183+/-8V). Data for both swaths is observed in the same revolution of the instrument.
GMI geometric footprints are: 12x13.4 km (10.65 GHz), 6.0x13.4 km (18.7 GHz), 6.0x13.4 km (23.8 GHz), 6.0x13.4 km (36.5 GHz), 3.0x13.4 km (89 GHz), 3.0x13.4 km (166.5 GHz), 3.0x13.4 km (183.31GHz). GPM Project cross-calibrates all channels at spatial sampling: 6x13 km (cross-track x along-track at forward bore sight).

Product Summary

Platforms
GPM
Instruments
GMI
Spatial Extent

N: 70 S: -70 E: 180 W: -180

Location
TROPICS
Coordinate System
GEODETIC
Granule Spatial Representation
GEODETIC
Temporal Extent
2014-03-04 to Present
Data Partner
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Concept ID
C4054954370-GES_DISC
Data State
ACTIVE
Number of Files/Granules
68678
Processing Level
1
Published
Updated
Science Keywords
Atmospheric Water Vapor ,
Precipitation ,
Brightness Temperature

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Berg, W. (2026). GPM GMI_R Common Calibrated Brightness Temperatures Collocated L1C 1.5 hours 13 km V08 [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/GPM/GMI/R/1C/08 Date Accessed: 2026-05-02

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
Precipitation Retrieval Integrating Multiple Satellite Observations: A Dataset and A Framework Wang, Zheng, He, Boxian, Wang, Chunjiao, Xu, Bin, Bai, Cong Atmospheric Water Vapor, Precipitation, RADAR, Brightness Temperature
Perspectives on Convective Rainfall From Passive and Active Microwave Sensors Hong, Yulan, Petkovic, Veljko Atmospheric Water Vapor, Precipitation, Brightness Temperature, RADAR
Reconstruction of 3D DPR Observations Using GMI Radiances Yang, Yunfan, Han, Wei, Sun, Haofei, Xie, Hejun, Gao, Zhiqiu Atmospheric Water Vapor, Precipitation, Brightness Temperature, RADAR
Development of the SURface Fast Emissivity Model for Ocean (SURFEMOcean) Based on the PARMIO Radiative Transfer Model Kilic, Lise, Prigent, Catherine, Jimenez, Carlos, Turner, Emma, Hocking, James, English, Stephen, Meissner, Thomas, Dinnat, Emmanuel Atmospheric Water Vapor, Precipitation, Brightness Temperature, ANTENNA TEMPERATURE
Can We Estimate the Uncertainty Level of Satellite Long-Term Precipitation Records? Petkovic, Veljko, Brown, Paula J., Berg, Wesley, Randel, David L., Jones, Spencer R., Kummerow, Christian D. Atmospheric Water Vapor, Precipitation, Brightness Temperature
Applications of dynamic land surface information for passive microwave precipitation retrieval Ringerud, Sarah, Peters-Lidard, Christa, Munchak, Joe, You, Yalei Atmospheric Water Vapor, Precipitation, Brightness Temperature
Inter-calibrating SMMR brightness temperatures over continental surfaces Favrichon, Samuel, Jimenez, Carlos, Prigent, Catherine Atmospheric Water Vapor, Precipitation, Brightness Temperature
Beyond the pixel: Using patterns and multiscale spatial information to improve the retrieval of precipitation from spaceborne passive microwave imagers Guilloteau, Clement, Foufoula-Georgiou, Efi Atmospheric Water Vapor, Precipitation, Brightness Temperature, RADAR
Detecting cloud contamination in passive microwave satellite measurements over land Favrichon, Samuel, Prigent, Catherine, Jimenez, Carlos, Aires, Filipe Atmospheric Water Vapor, Precipitation, Brightness Temperature
Improving the quality of heavy precipitation estimates from satellite passive microwave rainfall retrievals Petkovic, Veljko, Kummerow, Christian D., Randel, David L., Pierce, Jeffrey R., Kodros, John K. Atmospheric Water Vapor, Precipitation, Brightness Temperature
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Variables

The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.

For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor Offset
S1/incidenceAngle S1/incidenceAngle degrees float32 -9999.900390625 N/A N/A N/A
S1/incidenceAngleIndex S1/incidenceAngleIndex N/A int8 -99 N/A N/A N/A
S1/Latitude S1/Latitude degrees float32 -9999.900390625 N/A N/A N/A
S1/Longitude S1/Longitude degrees float32 -9999.900390625 N/A N/A N/A
S1/Quality S1/Quality N/A int8 -99 N/A N/A N/A
S1/ScanTime/DayOfMonth S1/ScanTime/DayOfMonth days int8 -99 N/A N/A N/A
S1/ScanTime/DayOfYear S1/ScanTime/DayOfYear days int16 -9999 N/A N/A N/A
S1/ScanTime/Hour S1/ScanTime/Hour hours int8 -99 N/A N/A N/A
S1/ScanTime/MilliSecond S1/ScanTime/MilliSecond ms int16 -9999 N/A N/A N/A
S1/ScanTime/Minute S1/ScanTime/Minute minutes int8 -99 N/A N/A N/A
S1/ScanTime/Month S1/ScanTime/Month months int8 -99 N/A N/A N/A
S1/ScanTime/Second S1/ScanTime/Second s int8 -99 N/A N/A N/A
S1/ScanTime/SecondOfDay S1/ScanTime/SecondOfDay s float64 -9999.9 N/A N/A N/A
S1/ScanTime/Year S1/ScanTime/Year years int16 -9999 N/A N/A N/A
S1/SCstatus/FractionalGranuleNumber S1/SCstatus/FractionalGranuleNumber N/A float64 -9999.9 N/A N/A N/A
S1/SCstatus/SCaltitude S1/SCstatus/SCaltitude km float32 -9999.900390625 N/A N/A N/A
S1/SCstatus/SClatitude S1/SCstatus/SClatitude degrees float32 -9999.900390625 N/A N/A N/A
S1/SCstatus/SClongitude S1/SCstatus/SClongitude degrees float32 -9999.900390625 N/A N/A N/A
S1/SCstatus/SCorientation S1/SCstatus/SCorientation degrees int16 -9999 N/A N/A N/A
S1/sunGlintAngle S1/sunGlintAngle degrees int8 -99 N/A N/A N/A
S1/sunLocalTime S1/sunLocalTime hours float32 -9999.900390625 N/A N/A N/A
S1/Tc S1/Tc K float32 -9999.900390625 N/A N/A N/A
S2/incidenceAngle S2/incidenceAngle degrees float32 -9999.900390625 N/A N/A N/A
S2/incidenceAngleIndex S2/incidenceAngleIndex N/A int8 -99 N/A N/A N/A
S2/Latitude S2/Latitude degrees float32 -9999.900390625 N/A N/A N/A
S2/Longitude S2/Longitude degrees float32 -9999.900390625 N/A N/A N/A
S2/Quality S2/Quality N/A int8 -99 N/A N/A N/A
S2/ScanTime/DayOfMonth S2/ScanTime/DayOfMonth days int8 -99 N/A N/A N/A
S2/ScanTime/DayOfYear S2/ScanTime/DayOfYear days int16 -9999 N/A N/A N/A
S2/ScanTime/Hour S2/ScanTime/Hour hours int8 -99 N/A N/A N/A
S2/ScanTime/MilliSecond S2/ScanTime/MilliSecond ms int16 -9999 N/A N/A N/A
S2/ScanTime/Minute S2/ScanTime/Minute minutes int8 -99 N/A N/A N/A
S2/ScanTime/Month S2/ScanTime/Month months int8 -99 N/A N/A N/A
S2/ScanTime/Second S2/ScanTime/Second s int8 -99 N/A N/A N/A
S2/ScanTime/SecondOfDay S2/ScanTime/SecondOfDay s float64 -9999.9 N/A N/A N/A
S2/ScanTime/Year S2/ScanTime/Year years int16 -9999 N/A N/A N/A
S2/SCstatus/FractionalGranuleNumber S2/SCstatus/FractionalGranuleNumber N/A float64 -9999.9 N/A N/A N/A
S2/SCstatus/SCaltitude S2/SCstatus/SCaltitude km float32 -9999.900390625 N/A N/A N/A
S2/SCstatus/SClatitude S2/SCstatus/SClatitude degrees float32 -9999.900390625 N/A N/A N/A
S2/SCstatus/SClongitude S2/SCstatus/SClongitude degrees float32 -9999.900390625 N/A N/A N/A
S2/SCstatus/SCorientation S2/SCstatus/SCorientation degrees int16 -9999 N/A N/A N/A
S2/sunGlintAngle S2/sunGlintAngle degrees int8 -99 N/A N/A N/A
S2/sunLocalTime S2/sunLocalTime hours float32 -9999.900390625 N/A N/A N/A
S2/Tc S2/Tc K float32 -9999.900390625 N/A N/A N/A
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