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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
July 11th, 2023
Document Description

(document coming soon)

IMERG V07 ATBD

Date Last Updated
July 12th, 2023
Document Description

This document describes the algorithm and processing sequence for the Integrated Multi-satellitE Retrievals for the Global Precipitation Measurement (GPM) mission (IMERG). 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 Tropical Rainfall Measuring Mission (TRMM) and GPM eras over the entire globe.

File Downloads
IMERG_V07_ATBD_final_230712.pdf

IMERG V07 Release Notes

Date Last Updated
February 21st, 2024
Document Description

The algorithm for the Integrated Multi-satellitE Retrievals for GPM (IMERG) has now been upgraded to Version 07.  IMERG V07 involves a wide range of changes to all aspects of the algorithm, many of which are implemented in response to feedback on V06, which was the first time the IMERG record spanned the TRMM-GPM eras.  IMERG V07 is being reprocessed for the entire TRMM-GPM record and thus supersedes all prior IMERG versions, as well as superseding the prior TRMM-based TMPA products (3B42, 3B43).

File Downloads
IMERG_V07_ReleaseNotes_240221.pdf
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