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Latest information for GPM NRT System and IMERG V07 Updates

The PPS has moved the date of the GPM Near-realtime (NRT) computing system updates to take place on Monday, June 3, 2024. At this time, IMERG will also be updated to V07. June 1 and 2 IMERG data will be included in the “initial processing”, so that the entire month will be available at V07 without having to wait for the Final to be processed at the usual 3.5-month latency. PPS has already made available on jsimpson.pps.eosdis.nasa.gov and jsimpsonhttps.pps.eosdis.nasa.gov IMERG V07B Early Run retro-processed data. The V07B data is in /NRTPUB/imerg/early/ subdirectories: 200006-200012 200101

Upcoming GPM Near Real-Time Server Updates and Start of IMERG V07 Early and Late Processing

On June 1, 2024, the Precipitation Processing System (PPS) will be performing updates and maintenance on the GPM near real-time (NRT) servers. As a result, GPM NRT data will not be produced during this time and it's expected that the GPM NRT servers will be inaccessible for several hours. In event of anomalies during the update process, the servers may be down for a few days. In addition, the following updates are planned for IMERG V07: On June 1, 2024, hour 00, IMERG V07 Early and Late will begin production at the PPS (Initial Processing [IP]). Any June 1 data generated before the V07 update

Final Post-boost Radar Algorithms for V07 Being Delivered on 5 March 2024

Since January 2024 the PPS has been running the GPM near-realtime (NRT) radar Ku, Ka, DPR and the combined products with an interim version of the post-boost radar algorithms. This was designated with the data product version V07X (experimental). JAXA and the radar algorithm team have developed the final post-boost V07 algorithm and will be delivering this on 5 March 2024. We will start using the new algorithms with the arrival of the V07C radar Ku/Ka 1B data from JAXA. The L2 Ku/Ka/DPR and combined products will then also change the data product version to V07C. The algorithm ID for combined

IMERG V07 Final Run Retrospective Processing Completed

As of Aug. 30, 2023, the entire available record of archived TRMM, GPM Core Observatory, partner satellite, and ancillary data has been retrospectively processed for the IMERG V07 Final Run dataset, covering June 2000 - April 2023. Initial processing (i.e., with newly arrived data) will extend the Final Run record as additional months of data are received, typically 3.5 months after the near real-time products, which users can determine by checking the IMERG Final Run data listings on the PPS or GES DISC GPM data sources (a full listing of GPM data downloads and sources can be found in the GPM

GPM L3 GPROF Daily and Monthly and L3 CLIM GPROF products will be updated to V07C on September 07, 2023

Commencing with the data date of Friday September 1, 2023 all GPM L3 GPROF Daily and Monthly products will be updated to the designation V07C. PPS will be making these V07C products available to the public starting on Thursday September 7, 2023. The L3 CLIM GPROF data products will also be updated on Thursday September 7, 2023. These products will commence with the data start date of Thursday June 1, 2023 and also have the designation V07C. This version update is necessary to correct the L3 gridded vertical hydrometeor profile means over the high latitude regions. This update identifies pixels

IMPORTANT: Errors in GPROF Orbits within Select IMERG Final Data Products

The IMERG development team has become aware that a small number of isolated bad Level 2 GPROF orbit granules leaked into V07A IMERG Final Run processing. The team is working with PPS to identify a more-complete list of such instances and trace them back to the Level 1C microwave data. Additional testing is being done and might reveal a few more cases. We are providing this information now in case the times happen to impinge on a detailed study that you are performing. The above image is an example of one of the worse cases (from F16 SSMIS); most cases are less severe or shorter in duration and

IMERG V07 Technical Documentation

Date Last Updated
July 13th, 2023
Document Description

The Integrated Multi-satelliE Retrievals for GPM (*IMERG*) is the unified U.S. algorithm that provides the multi-satellite precipitation product for the U.S. GPM team.

File Downloads
IMERG_TechnicalDocumentation_final_230713.pdf

IMERG V07 FAQ for Applications Users

Date Last Updated
February 24th, 2025
Document Description

This FAQ document provides information specifically aimed at the Integrated Multi-satellitE Retrievals for GPM (IMERG) Version 07 for applications users. As of August 2024, both Initial Processing (IP) and retrospective processing (RP) for the IMERG Early, Late and Final products have been completed for Version 07. IMERG V07 involves a wide range of changes to all aspects of the product, many of which are implemented in response to feedback on V06, which was the first time the IMERG record spanned the TRMM and GPM eras.

File Downloads
FAQ for IMERG V07 Applications Users_202502.pdf
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