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.
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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.
PPS is releasing version 3.80.44 build of the PPS TKIO toolkit using the 14.0.1 Fortran compiler for GPM. As detailed in our earlier announcement that you received on Thursday, June 28th, 2018, titled; "PPS is Reprocessing TRMM PR Data as TRMM GPM, Version 06A HDF5 products in Early July 2018" This is the version of the PPS I/O Toolkit that will be used for these radar products. The release notes are in this directory and are also attached to this Email: ftp://gpmweb2.pps.eosdis.nasa.gov/pub/PPStoolkit/GPM/tkio-3.80.44/ The tar file can be found at: ftp://gpmweb2.pps.eosdis.nasa.gov/pub...
The TRMM Version 7 Precipitation Radar (PR) products will be superseded by new GPM era products with a reprocessing that will generate TRMM retrievals from the beginning of the TRMM mission to the end of data collection using a single frequency retrieval algorithm similar to that used for GPM Ku. This reprocessing will begin in early July, 2018. Retrievals previously available in the TRMM Version 7 products 2A21, 2A23, 2A25, and 3A25 will be available in the new 2APR and 3PR products. Note that these new GPM era products are in HDF5 format and similar in structure to those used for GPM DPR...
On Sunday June 17, 2018 PPS System Programmers and staff will be performing an important scheduled GPM archive server upgrade. Due to this upgrade process, most PPS systems and services will be unavailable for most or all of that day starting at 9:00 AM (EDT) and lasting until late afternoon or longer depending upon the upgrade circumstances. -It is important to note that GPM (NRT) near realtime services (SDPS and ftp://jsimpson.pps.eosdis.nasa.gov/ ) will remain available and unaffected during this period. -PPS's Aeolus server ( ftp://aeolus.pps.eosdis.nasa.gov/ ) will only provide near real...
PPS will retro process 3B42/43 for March 2018. We were informed that the GPCC Monitoring Product (rainguage data) received for March 2018 had an error in processing. If you have obtained any of these products from our archive or through a Standing Order, etc., please discard and use the replacement products when available. We will process the products as soon as the replacement GPCC product is received. Sorry for any inconvenience this may have caused.
PPS will replace GPM Ka/Ku L1B products from JAXA and will reprocess the affected data including Level 2 and 3 data. If you have already obtained products with orbit#24203 from our archive or through a standing order, etc., please discard and use the replacement products when available. PPS will replace the following GPM Ka/Ku L1B data: GPMCOR_KAR_1806020955_1128_024203_1BS_DAB_05B.h5 GPMCOR_KUR_1806020955_1128_024203_1BS_DUB_05B.h5 PPS will reprocess the affected L2-3 downstream products. If you have obtained any of these products from our archive or through a Standing Order, etc., please...
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