AI-generated Key Takeaways
-
The NASA/GPM_L3/IMERG_MONTHLY_V07 dataset provides monthly global precipitation estimates from June 2000 to June 2024.
-
It combines data from all passive-microwave instruments in the GPM Constellation, along with IR satellite estimates and gauge analyses.
-
IMERG, the unified algorithm behind the dataset, intercalibrates, merges, and interpolates precipitation data at fine time and space scales.
-
The dataset has a spatial resolution of 11132 meters and includes bands like precipitation, precipitationQualityIndex, and probabilityLiquidPrecipitation.
-
GPM data is freely available for public use.
- Dataset Availability
- 2000-06-01T00:00:00Z–2025-05-01T00:00:00Z
- Dataset Provider
- NASA GES DISC at NASA Goddard Space Flight Center
- Cadence
- 1 Month
- Tags
Description
Global Precipitation Measurement (GPM) is an international satellite mission to provide next-generation observations of rain and snow worldwide every three hours. The Integrated Multi-satellitE Retrievals for GPM (IMERG) is the unified algorithm that provides rainfall estimates combining data from all passive-microwave instruments in the GPM Constellation.
This algorithm is intended to intercalibrate, merge, and interpolate all satellite microwave precipitation estimates, together with microwave-calibrated infrared (IR) satellite estimates, precipitation gauge analyses, and potentially other precipitation estimators at fine time and space scales for the TRMM and GPM eras over the entire globe. The system is run several times for each observation time, first giving a quick estimate and successively providing better estimates as more data arrive. The final step uses monthly gauge data to create research-level products. See IMERG Technical Documentation for more details on the algorithm.
Documentation:
This collection contains data from GPM_3IMERGM_07
Bands
Pixel Size
11132 meters
Bands
| Name | Units | Pixel Size | Description |
|---|---|---|---|
gaugeRelativeWeighting |
% | meters | Weighting of gauge precipitation relative to the multi-satellite precipitation |
precipitation |
mm/hr | meters | Merged satellite-gauge precipitation estimate |
precipitationQualityIndex |
Equivalent gauges per 2.5 degree box | meters | Quality Index for precipitation field |
probabilityLiquidPrecipitation |
% | meters | Accumulation-weighted probability of liquid precipitation phase |
randomError |
mm/hr | meters | Random error for merged satellite-gauge precipitation |
Terms of Use
Terms of Use
All NASA-produced data from the GPM mission is made freely available for the public to use.
Citations
Huffman, G.J., E.F. Stocker, D.T. Bolvin, E.J. Nelkin, Jackson Tan (2019), GPM IMERG Final Precipitation L3 1 month 0.1 degree x 0.1 degree V07, Greenbelt, MD, Goddard Earth Sciences Data and Information Services Center (GES DISC), Accessed: [Data Access Date], 10.5067/GPM/IMERG/3B-MONTH/07
DOIs
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee.ImageCollection('NASA/GPM_L3/IMERG_MONTHLY_V07') .filterDate('2022-01-01', '2023-01-01'); // Select the max precipitation and mask out low precipitation values. var precipitation = dataset.select('precipitation').max(); var mask = precipitation.gt(0.25); var precipitation = precipitation.updateMask(mask); var palette = [ '000096','0064ff', '00b4ff', '33db80', '9beb4a', 'ffeb00', 'ffb300', 'ff6400', 'eb1e00', 'af0000' ]; var precipitationVis = {min: 0.0, max: 1.5, palette: palette}; Map.addLayer(precipitation, precipitationVis, 'Precipitation (mm/hr)'); Map.setCenter(-76, 33, 3);