Global Satellite Mapping of Precipitation (GSMaP) provides
a global hourly rain rate with a 0.1 x 0.1 degree resolution. GSMaP
is a product of the Global Precipitation Measurement (GPM) mission,
which provides global precipitation observations at three hour
intervals. Values are estimated using multi-band passive microwave
and infrared radiometers from the GPM Core Observatory satellite
and with the assistance of a constellation of other satellites. GPM's
precipitation rate retrieval algorithm is based on a radiative
transfer model. The gauge-adjusted rate is calculated based on
the optimization of the 24h accumulation of GSMaP hourly rain rate
to daily precipitation by NOAA/CPC gauge measurement.
This dataset is processed by GSMaP algorithm version 8 (product version 5).
See GSMaP Technical Documentation
for more details.
This dataset contains provisional products GSMaP_NRT that are
regularly replaced with updated versions when the GSMaP_MVK data
become available.
The products are marked with a metadata property called ''status''.
When a product is initially made available, the property value
is ''provisional''. Once a provisional product has been updated
with the final version, this value is updated to ''permanent''.
For more information please refer
General Documentation
Bands
Pixel Size 11132 meters
Bands
Name
Units
Min
Max
Pixel Size
Description
hourlyPrecipRate
mm/hr
0*
204.88*
meters
Snapshot of hourly precipitation rate
hourlyPrecipRateGC
mm/hr
0*
200.36*
meters
Snapshot of hourly precipitation rate adjusted to rain gauge
observationTimeFlag
h
-124.72*
16.06*
meters
Relative time from the starting time of the file
to the time of microwave radiometer (imager/sounder) observing.
If no observation exists within the hourly window, the time
will be the negative number of hours since the last observation.
satelliteInfoFlag
meters
Satellite/sensor used
Bitmask for satelliteInfoFlag
Bit 0: NOAA/CPC Globally Merged IR data
0: No
1: Yes
Bit 1: TRMM/TMI
0: No
1: Yes
Bit 2: GPM-Core/GMI
0: No
1: Yes
Bit 3: Megha-Tropiques/MADRAS
0: No
1: Yes
Bit 4: Megha-Tropiques/SAPHIR
0: No
1: Yes
Bit 5: ADEOS-II/AMSR
0: No
1: Yes
Bit 6: Aqua/AMSR-E
0: No
1: Yes
Bit 7: GCOM-W1/AMSR2
0: No
1: Yes
Bit 8: GCOM-W2/AMSR2
0: No
1: Yes
Bit 9: GCOM-W3/AMSR2
0: No
1: Yes
Bit 10: DMSP-F11/SSM/I
0: No
1: Yes
Bit 11: DMSP-F13/SSM/I
0: No
1: Yes
Bit 12: DMSP-F14/SSM/I
0: No
1: Yes
Bit 13: DMSP-F15/SSM/I
0: No
1: Yes
Bit 14: DMSP-F16/SSM/I
0: No
1: Yes
Bit 15: DMSP-F17/SSM/I
0: No
1: Yes
Bit 16: DMSP-F18/SSM/I
0: No
1: Yes
Bit 17: DMSP-F19/SSM/I
0: No
1: Yes
Bit 18: DMSP-F20/SSM/I
0: No
1: Yes
Bit 19: NOAA-15/AMSU-A/B
0: No
1: Yes
Bit 20: NOAA-16/AMSU-A/B
0: No
1: Yes
Bit 21: NOAA-17/AMSU-A/B
0: No
1: Yes
Bit 22: NOAA-18/AMSU-A/B
0: No
1: Yes
Bit 23: NOAA-19/AMSU-A/B
0: No
1: Yes
Bit 24: NPP/ATMS
0: No
1: Yes
Bit 25: JPSS-1/ATMS
0: No
1: Yes
Bit 26: MetOp-A/AMSU-A/MHS
0: No
1: Yes
Bit 27: MetOp-B/AMSU-A/MHS
0: No
1: Yes
Bit 28: MetOp-C/AMSU-A/MHS
0: No
1: Yes
gaugeQualityInfo
count/d
0*
121*
meters
Existence of gauge adjustment when the status is
'provisional', 1 indicates adjusted and 0 is non-adjusted.
When the status is 'permanent', the pixel value is the daily
average of number of gauges used for adjustment in the pixel.
* estimated min or max value
Image Properties
Image Properties
Name
Type
Description
AlgorithmID
STRING
The algorithm that generated this product, e.g., 3GSMAPH
AlgorithmVersion
STRING
The version of the algorithm that generated this product
ProductVersion
STRING
The data version assigned by the processing system
GenerationDateTime
STRING
The date and time this granule was generated
status
STRING
Permanent or provisional
Terms of Use
Terms of Use
Anyone wishing to publish any results using the data
from the JAXA Global Rainfall Watch System should clearly acknowledge
the ownership of the data in the publication (for example, ' Global
Rainfall Map in Near-Real-Time (GSMaP_NRT) by JAXA Global Rainfall
Watch' was produced and distributed by the Earth Observation Research
Center, Japan Aerospace Exploration Agency). If you have benefited
from GSMaP rainfall products, please cite the major papers listed
below. For additional information, please visit the JAXA Site
Policy and the Users Guide.
Citations
Citations:
Kubota, T., K. Aonashi, T. Ushio, S. Shige, Y. N. Takayabu, M. Kachi,
Y. Arai, T. Tashima, T. Masaki, N. Kawamoto, T. Mega, M. K. Yamamoto,
A. Hamada, M. Yamaji, G. Liu and R. Oki 2020: Global Satellite Mapping of
Precipitation (GSMaP) products in the GPM era, Satellite precipitation
measurement, Springer, https://doi.org/10.1007/978-3-030-24568-9_20.
Global Satellite Mapping of Precipitation (GSMaP) provides a global hourly rain rate with a 0.1 x 0.1 degree resolution. GSMaP is a product of the Global Precipitation Measurement (GPM) mission, which provides global precipitation observations at three hour intervals. Values are estimated using multi-band passive microwave and infrared radiometers from …
[null,null,[],[[["\u003cp\u003eThe GSMaP dataset provides global hourly precipitation rates at a 0.1 x 0.1 degree resolution from 1998 to 2024.\u003c/p\u003e\n"],["\u003cp\u003eIt utilizes data from the GPM mission and a constellation of satellites, employing passive microwave and infrared radiometers for estimation.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes both near-real-time (provisional) and final (permanent) products, indicated by the "status" property.\u003c/p\u003e\n"],["\u003cp\u003ePrecipitation rates are provided in two bands: \u003ccode\u003ehourlyPrecipRate\u003c/code\u003e and \u003ccode\u003ehourlyPrecipRateGC\u003c/code\u003e, the latter being adjusted to rain gauge measurements.\u003c/p\u003e\n"],["\u003cp\u003eUsers should acknowledge JAXA in publications using this data and cite relevant papers as outlined in the Terms of Use section.\u003c/p\u003e\n"]]],[],null,["Dataset Availability\n: 1998-01-01T00:00:00Z--2025-09-01T14:00:00Z\n\nDataset Provider\n:\n\n\n [JAXA Earth Observation Research Center](https://sharaku.eorc.jaxa.jp/GSMaP/)\n\nCadence\n: 1 Hour\n\nTags\n:\n[climate](/earth-engine/datasets/tags/climate) [geophysical](/earth-engine/datasets/tags/geophysical) [gpm](/earth-engine/datasets/tags/gpm) [hourly](/earth-engine/datasets/tags/hourly) [jaxa](/earth-engine/datasets/tags/jaxa) [precipitation](/earth-engine/datasets/tags/precipitation) [weather](/earth-engine/datasets/tags/weather) \n\nDescription \nGlobal Satellite Mapping of Precipitation (GSMaP) provides\na global hourly rain rate with a 0.1 x 0.1 degree resolution. GSMaP\nis a product of the Global Precipitation Measurement (GPM) mission,\nwhich provides global precipitation observations at three hour\nintervals. Values are estimated using multi-band passive microwave\nand infrared radiometers from the GPM Core Observatory satellite\nand with the assistance of a constellation of other satellites. GPM's\nprecipitation rate retrieval algorithm is based on a radiative\ntransfer model. The gauge-adjusted rate is calculated based on\nthe optimization of the 24h accumulation of GSMaP hourly rain rate\nto daily precipitation by NOAA/CPC gauge measurement.\nThis dataset is processed by GSMaP algorithm version 8 (product version 5).\nSee [GSMaP Technical Documentation](https://www.eorc.jaxa.jp/GPM/doc/product/format/en/07.GPM_GSMaP_Product_Format_V5_E.pdf)\nfor more details.\n\nThis dataset contains provisional products GSMaP_NRT that are\nregularly replaced with updated versions when the GSMaP_MVK data\nbecome available.\nThe products are marked with a metadata property called ''status''.\nWhen a product is initially made available, the property value\nis ''provisional''. Once a provisional product has been updated\nwith the final version, this value is updated to ''permanent''.\nFor more information please refer\n[General Documentation](https://eolp.jaxa.jp/GSMaP_Hourly.html)\n\nBands\n\n\n**Pixel Size**\n\n11132 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|-----------------------|---------|-----------|----------|------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `hourlyPrecipRate` | mm/hr | 0\\* | 204.88\\* | meters | Snapshot of hourly precipitation rate |\n| `hourlyPrecipRateGC` | mm/hr | 0\\* | 200.36\\* | meters | Snapshot of hourly precipitation rate adjusted to rain gauge |\n| `observationTimeFlag` | h | -124.72\\* | 16.06\\* | meters | Relative time from the starting time of the file to the time of microwave radiometer (imager/sounder) observing. If no observation exists within the hourly window, the time will be the negative number of hours since the last observation. |\n| `satelliteInfoFlag` | | | | meters | Satellite/sensor used |\n| Bitmask for satelliteInfoFlag - Bit 0: NOAA/CPC Globally Merged IR data - 0: No - 1: Yes - Bit 1: TRMM/TMI - 0: No - 1: Yes - Bit 2: GPM-Core/GMI - 0: No - 1: Yes - Bit 3: Megha-Tropiques/MADRAS - 0: No - 1: Yes - Bit 4: Megha-Tropiques/SAPHIR - 0: No - 1: Yes - Bit 5: ADEOS-II/AMSR - 0: No - 1: Yes - Bit 6: Aqua/AMSR-E - 0: No - 1: Yes - Bit 7: GCOM-W1/AMSR2 - 0: No - 1: Yes - Bit 8: GCOM-W2/AMSR2 - 0: No - 1: Yes - Bit 9: GCOM-W3/AMSR2 - 0: No - 1: Yes - Bit 10: DMSP-F11/SSM/I - 0: No - 1: Yes - Bit 11: DMSP-F13/SSM/I - 0: No - 1: Yes - Bit 12: DMSP-F14/SSM/I - 0: No - 1: Yes - Bit 13: DMSP-F15/SSM/I - 0: No - 1: Yes - Bit 14: DMSP-F16/SSM/I - 0: No - 1: Yes - Bit 15: DMSP-F17/SSM/I - 0: No - 1: Yes - Bit 16: DMSP-F18/SSM/I - 0: No - 1: Yes - Bit 17: DMSP-F19/SSM/I - 0: No - 1: Yes - Bit 18: DMSP-F20/SSM/I - 0: No - 1: Yes - Bit 19: NOAA-15/AMSU-A/B - 0: No - 1: Yes - Bit 20: NOAA-16/AMSU-A/B - 0: No - 1: Yes - Bit 21: NOAA-17/AMSU-A/B - 0: No - 1: Yes - Bit 22: NOAA-18/AMSU-A/B - 0: No - 1: Yes - Bit 23: NOAA-19/AMSU-A/B - 0: No - 1: Yes - Bit 24: NPP/ATMS - 0: No - 1: Yes - Bit 25: JPSS-1/ATMS - 0: No - 1: Yes - Bit 26: MetOp-A/AMSU-A/MHS - 0: No - 1: Yes - Bit 27: MetOp-B/AMSU-A/MHS - 0: No - 1: Yes - Bit 28: MetOp-C/AMSU-A/MHS - 0: No - 1: Yes ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `gaugeQualityInfo` | count/d | 0\\* | 121\\* | meters | Existence of gauge adjustment when the status is 'provisional', 1 indicates adjusted and 0 is non-adjusted. When the status is 'permanent', the pixel value is the daily average of number of gauges used for adjustment in the pixel. |\n\n\\* estimated min or max value\n\nImage Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|--------------------|--------|----------------------------------------------------------|\n| AlgorithmID | STRING | The algorithm that generated this product, e.g., 3GSMAPH |\n| AlgorithmVersion | STRING | The version of the algorithm that generated this product |\n| ProductVersion | STRING | The data version assigned by the processing system |\n| GenerationDateTime | STRING | The date and time this granule was generated |\n| status | STRING | Permanent or provisional |\n\nTerms of Use\n\n**Terms of Use**\n\nAnyone wishing to publish any results using the data\nfrom the JAXA Global Rainfall Watch System should clearly acknowledge\nthe ownership of the data in the publication (for example, ' Global\nRainfall Map in Near-Real-Time (GSMaP_NRT) by JAXA Global Rainfall\nWatch' was produced and distributed by the Earth Observation Research\nCenter, Japan Aerospace Exploration Agency). If you have benefited\nfrom GSMaP rainfall products, please cite the major papers listed\nbelow. For additional information, please visit the [JAXA Site\nPolicy](https://global.jaxa.jp/policy.html) and the [Users Guide](https://sharaku.eorc.jaxa.jp/GSMaP/guide.html).\n\nCitations \nCitations:\n\n- Kubota, T., K. Aonashi, T. Ushio, S. Shige, Y. N. Takayabu, M. Kachi,\n Y. Arai, T. Tashima, T. Masaki, N. Kawamoto, T. Mega, M. K. Yamamoto,\n A. Hamada, M. Yamaji, G. Liu and R. Oki 2020: Global Satellite Mapping of\n Precipitation (GSMaP) products in the GPM era, Satellite precipitation\n measurement, Springer, https://doi.org/10.1007/978-3-030-24568-9_20.\n\nDOIs\n\n- \u003chttps://doi.org/10.57746/EO.01gs73bkt358gfpy92y2qns5e9\u003e\n\nExplore with Earth Engine **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('JAXA/GPM_L3/GSMaP/v8/operational')\n .filter(ee.Filter.date('2023-09-12', '2023-09-13'));\nvar precipitation = dataset.select('hourlyPrecipRate');\nvar precipitationVis = {\n min: 0.0,\n max: 10.0,\n palette:\n ['1621a2', 'ffffff', '03ffff', '13ff03', 'efff00', 'ffb103', 'ff2300'],\n};\nMap.setCenter(-90.7, 26.12, 3);\nMap.addLayer(precipitation, precipitationVis, 'Precipitation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/JAXA/JAXA_GPM_L3_GSMaP_v8_operational) \n[GSMaP Operational: Global Satellite Mapping of Precipitation - V8](/earth-engine/datasets/catalog/JAXA_GPM_L3_GSMaP_v8_operational) \nGlobal Satellite Mapping of Precipitation (GSMaP) provides a global hourly rain rate with a 0.1 x 0.1 degree resolution. GSMaP is a product of the Global Precipitation Measurement (GPM) mission, which provides global precipitation observations at three hour intervals. Values are estimated using multi-band passive microwave and infrared radiometers from ... \nJAXA/GPM_L3/GSMaP/v8/operational, climate,geophysical,gpm,hourly,jaxa,precipitation,weather \n1998-01-01T00:00:00Z/2025-09-01T14:00:00Z \n-60 -180 60 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.57746/EO.01gs73bkt358gfpy92y2qns5e9](https://doi.org/https://sharaku.eorc.jaxa.jp/GSMaP/)\n- [https://doi.org/10.57746/EO.01gs73bkt358gfpy92y2qns5e9](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/JAXA_GPM_L3_GSMaP_v8_operational)"]]
