File Naming Convention for Precipitation Products For the Global Precipitation Measurement (GPM) Mission

Published Date: 

This document describes the file naming conventions that will be used to name data products produced by the Precipitation Processing System (PPS) for the Global Precipitation Measurement (GPM) Mission. 

Mission Affiliation: 
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PPS To Begin Version 4 GPM and Partner Satellite Data Processing

PPS will commence Version 4 processing of GPM and Partner satellite products in early March 2016.  All current Version 3 products will be processed through February 29, 2016.  Once the current products are completed there will be a delay before the first version 4 products will be made available to the public.

Recent 3B41RT and 3B42RT Files Reprocessed

NOAA has reprocessed the global IR data for 10 UTC 26 April
through 14 UTC 27 April due to dropped images, and all 3B41RT and
3B42RT files for this time period have been reprocessed by PPS and are
now available:

   3B41RT.2015042610.7.bin.gz through 3B41RT.2015042714.7.bin.gz
   3B42RT.2015042612.7.bin.gz through 3B42RT.2015042715.7.bin.gz

Such partial dropouts in the IR data result in somewhat lower quality for IMERG Early and Late Runs, but are not cause for reprocessing. 

2014 PMM Science Team Meeting Summary from the Earth Observer, November 2014

Published Date: 

This excerpt from the November 2014 edition of The Earth Observer provides a summary of the activities at the PMM Science Team Meeting which took place from August 4 - 7, 2014. The PMM program supports scientific research, algorithm development, and ground-based validation activities for the Tropical Rainfall Measuring Mission (TRMM) and the Global Precipitation Measurement (GPM) Core Observatory that launched on February 27, 2014.

Mission Affiliation: 
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Document Type: 

GPM Data Release Schedule Announced

The GPM Core Observatory satellite was successfully launched on February 27th, 2014. Data from the GPM Microwave Imager (GMI) and Dual-frequency Precipitation Radar (DPR) have the following release schedule. All data are freely available through the NASA's Precipitation Processing System at

June 16th – GMI Level 1 Brightness Temperature data have been released. This includes GMI instrument swath data.

2013 PMM Science Team Meeting

The NASA Precipitation Measurement Missions (PMM) Science Team for the TRMM and GPM missions met on March 18-21, 2013 in Annapolis, MD.  This meeting included oral, poster, and evening working group sessions covering mission/program status, algorithm development activities, international partner reports, science activities, field campaign results, and other science team business.  More than 175 scientists from 11 countries participated.  The TRMM satellite is now in its 16th year of on-orbit operation and the GPM Core Observatory is scheduled to launch in early 2014.

Multi-Satellite Algorithms

In addition to the PMM satellites, TRMM and GPM, roughly a dozen other satellites carry precipitation-relevant sensors. The goal of multi-satellite algorithms is to use “all” of the available quasi-global precipitation estimates computed from this international constellation of satellites to create a High-Resolution Precipitation Product with complete coverage over the chosen domain and period of record (currently 50°N-50°S, 1998-present).


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