There are several sources for downloading and viewing data which allow you to subset the data to only include specific parameters and/or geographic locations. These include the GES DISC, Giovanni and STORM. In Giovanni you can obtain data for a specific country, U.S. state, or watershed by using the "Show Shapes" option in the "Select Region" pane.
Data
Thursday, September 13, 2018
Precipitation data from the GPM and TRMM missions are made available free to the public in a variety of formats from several sources at NASA Goddard Space Flight Center. This section outlines the different types of data available, the levels of processing, the sources to download the data, and some helpful tips for utilizing precipitation data in your research.
Beginner Resources
Training
Tutorials
Data Visualization
Data FAQ
Learn about IMERG
Sections
How do I get precipitation data for my specific location?
What happened to the TRMM Multi-satellite Precipitation Analysis (TMPA / 3B4x) data products?
The TRMM satellilte has been decommissioned and stopped collecting data in April 2015. The transition from the Tropical Rainfall Measuring Mission (TRMM) data products to the Global Precipitation Measurement (GPM) mission products has completed as of August 2019. The GPM IMERG dataset now includes TRMM-era data from June 2000 to the present, and other TRMM-era data has been reprocessed with GPM-era algorithms and is now available on the GPM FTP servers. TMPA data production ended as of December 31st, 2019 and the TRMMOpen FTP server has been shut down. Historical TMPA data is still available to download from the NASA GES DISC at: https://disc.gsfc.nasa.gov/datasets?keywords=TMPA&page=1
Click here for more details on the transition from TMPA to IMERG.
Am I allowed to use GPM data for my research?
Yes, in line with NASA's general data policy. Please refer to the GPM Data Policy for further details.
How do I give credit for using GPM data?
Where can I find detailed documentation on the precipitation algorithms?
Browse our directory of GPM & TRMM data products to locate your desired algorithm, then click on the links in the algorithm description under "Documentation". All documentation is also available at the Precipitation Processing System website.
What is the spatial and temporal resolution of GPM data?
The resolution of Level 0, 1, and 2 data is determined by the footprint size and observation interval of the sensors involved. Level 3 products are given a grid spacing that is driven by the typical footprint size of the input data sets.
For our popular multi-satellite GPM IMERG data products, the spatial resolution is 0.1° x 0.1° (or roughly 10km x 10km) with a 30 minute temporal resolution.
Visit the directory of GPM & TRMM data products for details on the resolution of each specific products.
Can I use images or videos from this site or other NASA websites?
For questions about permission for using NASA images and videos, please refer to NASA's official Media Usage Guidelines. For any additional questions please contact bert.ulrich@nasa.gov
Is it possible to subset GPM data?
There are several sources for downloading and viewing data which allow you to subset the data to only include specific parameters and/or geographic locations. These include the GES DISC, Giovanni and STORM. In Giovanni you can obtain data for a specific country, U.S. state, or watershed by using the "Show Shapes" option in the "Select Region" pane.
What is the difference between "Near Real-time" (NRT) and "Production" / "Research" data?
GPM data products can be divided into two groups (near real-time and production) depending on how soon they are created after the satellite collects the observations. For applications such as weather, flood, and crop forecasting that need precipitation estimates as soon as possible, near real-time data products are most appropriate. GPM near real-time (GMI & DPR) products are generally available within a few hours of observation. For all other applications, production data products are generally the best data sets to use because additional or improved inputs are used to increase accuracy. These other inputs are only made available several days, or in some cases, several months, after the satellite observations are taken, and the production data sets are computed after all data have arrived, making possible a more careful analysis.
For the GPM IMERG dataset, IMERG Early and Late Runs are the near real-time products, while IMERG Final Run is the research / production product. Click here to learn more about the differences between IMERG Early, Late and Final.
Date of Event: 15 June 2017 Start Time of Event: 13:15 UTC Schedule stop time: 14:15 UTC GSFC networking personnel will be replacing network equipment that will directly impact GPM MOC, both its connection to PPS AND, more significantly, its connection to White Sands (WSC) which is the download location for GPM data. Since this replacement will provided needed increase in network throughput capacity, the update is required. During the outage, PPS SDPS (tnitta) will receive NO GPM DATA. While only an hour is currently planned for the outage as with any network modifications, changes might take...
In an effort to keep users informed, below is the current status of the IMERG V04 products. Summary 1. As of 02:20 UTC on 9 May 2017, IMERG Early and Late are running in V04 with backward compatibility adjustments to V05 inputs. 2. From that point to about 11:30 UTC on 12 May 2017, there are long, thin streaks of artifacts in IMERG Early and Late due to GPROF-ATMS. 3. From that point to about 15:00 UTC on 30 May 2017, there are unrealistically large areas of light rain in moist tropical ocean areas in IMERG Early and Late due to GPROF-ATMS and GPROF-MHS. Thereafter, the content of microwave...
PPS is releasing GPM V05 DPR L1-L3 and Combined L2 and L3 V05 data products today, Wednesday May 17, 2017. This V05 data will be available beginning with May 01, 2017 data and forward. The DPR Level 3 monthly products will be released when validated. Reprocessed V05 DPR and Combined data for March 2014 through April 2017 will take several weeks to complete. This data will appear in PPS's arthurhou archive as we reprocess (6 to 8 weeks - estimated completion time). Registered users can obtain data from: ftp://arthurhou.pps.eosdis.nasa.gov/ and can order this through STORM: https://storm.pps...
Effective approximately 04:00 UTC, 9 May 2017 the near-realtime swath products (GMI, partner constellation, radar and combined) will be upgraded from V04 to V05. During the conversion the latency of near-realtime will be affected as all the new code and support files need to be modified to carry out this upgrade. We hope this will take no more than 2 hours but can not guarantee it might not be longer. We will start with the upgrade of radar products, followed as quickly as possible by GMI and then the partner constellation products. We are starting with the radar as this requires close...
The GPM project has reprocessed all the original NRT IMERG data both EARLY and LATE to product version V04A. In addition, this reprocessing brought the IMERG dataset back to the beginning of the GPM mission in March 2014. The original NRT IMERG started its processing in March of 2015. Currently only the HDF5 products have been reprocessed to V04A. The TIFF/TFW versions will also be reprocessed but this will take a while longer. The V04 products are located in the directories early/YYYYMM and late/YYYYMM respectively. A subdirectory V03 has been created within those directories and the V03 data...