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Content which is affiliated solely with the Global Precipitation Measurement Mission.

File Naming Convention for Precipitation Products For the Global Precipitation Mission Measurement

Date Last Updated
October 10th, 2017
Document Description

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. These file naming conventions are also intended to apply to files produced or reprocessed from the Tropical Rainfall Measuring Mission (TRMM) satellite during the period of GPM operations.

File Downloads
FileNamingConventionForPrecipitationProductsForGPMMission.pdf

IMERG V06 Release Notes

Date Last Updated
October 6th, 2020
Document Description

The algorithm for the Integrated Multi-satellitE Retrievals for GPM (IMERG) has now been upgraded to Version 06. The transition to V05 for the IMERG Final Run began 13 March 2019 at PPS and the new data started flowing down to the GES DISC as well. However, on 15 March 2019 an error was discovered in processing the initial batches of V06 IMERG Final Run months. A design choice in the code ended up retaining microwave precipitation estimates in the latitude band 60°N-S when there is snow/ice on the surface, rather than masking out the estimates due to low performance in such cases.

File Downloads
IMERG_V06_release_notes_201006.pdf

IMERG V06 Quality Index

Date Last Updated
March 15th, 2019
Document Description

Users have requested a “simple” quality index (QI) to give some guidance on when they should most trust the Integrated Multi-satellitE Retrievals for GPM (IMERG). While the goal is reasonable, there is no agreement about how this quantity should be defined. After some discussion within the team, two distinctly different quality indices were chosen for the half-hourly and monthly data fields (QIh and QIm, respectively) for implementation in Version 05 and continued in V06.

File Downloads
IMERGV06_QI.pdf

IMERG GIS / GeoTIFF Documentation

Date Last Updated
June 27th, 2023
Document Description

NASA produces a GIS translation of IMERG for various accumulation periods. The GIS translation maintains the 0.1-degree spatial resolution of the original HDF5 data product. In July 2023, Version 7 IMERG was released in both HDF5 and GIS formats. In April 2019, Version 6 of IMERG had been released, covering June 2000 to 2019. The long- duration archive for all versions starting with Version 6 is a boon to scientific research and provides a training set for near real-time applications such as disaster monitoring.

File Downloads
IMERG_GIS-GeoTIFF_ReadMe_6_27_23.pdf

Climate Change and Landslide Risk in Asia

Landslide Risk in High Mountain Asia
Tuesday, February 11, 2020
More frequent and intense rainfall events due to climate change could cause more landslides in the High Mountain Asia region of China, Tibet and Nepal, according to the first quantitative study of the link between precipitation and landslides in the region. The model shows landslide risk for High Mountain Asia increasing in the summer months in the years 2061-2100, thanks to increasingly frequent and intense rainfall events. Summer monsoon rains can destabilize steep mountainsides, triggering landslides. Credits: NASA's Earth Observatory/Joshua Stevens High Mountain Asia stores more fresh...
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Status of TMPA and TMPA-RT

As previously announced, with the recent release of the long-record V06B IMERG Early, Late, and Final products in late summer of 2019, processing of the TMPA-RT and TMPA products is ending, with December 2019 being the final month of data. This means that TMPA-RT products have already ceased production and the TMPA products will end with December 2019 (expected by March 2020). Thanks go to the PPS team, who managed to keep some really old computer hardware alive long enough to meet this goal! These legacy products will continue to be hosted at PPS and GES DISC to allow users sufficient time to

Rain Brought Brief Relief to Australia

Rain Brought Brief Relief to Australia
Monday, January 27, 2020
For much of the 2019-2020 austral summer, plumes of bushfire smoke have billowed from southeastern Australia in such large amounts that the ground was barely visible in satellite images. In mid-January, some of those plumes were finally quelled by a few days of much-needed rainfall.
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1A-GMI File Specification

Date Last Updated
November 3rd, 2016
Document Description

1AGMI contains unpacked packet data from GMI science data from the GMI passive
microwave instrument flown on the GPM satellite. Swath S1 has 9 channels which are
similar to TRMM TMI (10V 10H 19V 19H 23V 37V 37H 89V 89H). Swath S2 has 4
channels similar to AMSU-B (166V 166H 183+/-3V 183+/-8V). Data for both swaths
is observed in the same revolution of the instrument. Swath S3 has ScienceDataHeader.
Swath S4 has full rotation for low freq channels (S1). Swath S5 has full rotation for high
freq channels (S2).

File Downloads
filespec.GPM_.V1.1AGMI.pdf

Typhoon Kammuri Hits the Philippines

Typhoon Kammuri Hits the Central Phiippines
Thursday, December 5, 2019
While the Atlantic hurricane season officially ended on November 30th, Typhoon Kammuri (known as Tisoy in the Philippines), which recently struck the central Philippines as a powerful Category 4 typhoon, is a reminder that the Pacific typhoon season is not yet over. In fact, while typhoon season does peak from around June through November, similar to the Atlantic, typhoons can occur throughout the year in the Pacific. Kammuri first formed into a tropical depression from an area of low pressure on the 25th of November north of Micronesia in the west central Pacific about 500 miles southeast of Guam.
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PPS Announces the Release of New GPM Data Products Level 1-Level 3 NOAA20_ATMS

PPS is announcing the availability of the new NOAA20_ATMS products which will be available starting today, Tuesday September 04, 2018 The NOAA20_ATMS data range starts with November 29, 2017 and will be processed to the current date. November/December 2017 products will be available this afternoon. The corresponding PPS TKIO to be used with this data is tkio 3.80.26: ftp://gpmweb2.pps.eosdis.nasa.gov/pub/PPStoolkit/GPM/tkio-3.80.26/ PPS is currently processing the following NOAA20_ATMS products (below). The entire data set will be available over the next couple of weeks. This consists of
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