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GPM Captures Powerful Typhoon Khanun Approaching the Ryukyus

GPM Overpass of Typhoon Khanun
Thursday, August 3, 2023
The Northwest Pacific typhoon season has been quite active recently. Following in the wake of Super Typhoon Doksuri, which skirted the northern tip of Luzon July 25 and 26 and continued on to bring extreme rainfall to southeast coast of China, is yet another powerful storm - Typhoon Khanun. Khanun (known as “Falcon” in the Philippines) began in the West Pacific Ocean as an area of disturbed weather on July 24 situated well south of Guam and east of Palau. Over the next several days the system slowly intensified as it tracked northwestward towards the Ryuku Islands of southern Japan, becoming a
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IMERG V07 Final Processing has Begun

Retrospective processing of IMERG V07 Final Run has commenced as of July 2023 using the new IMERG V07 algorithm. The TRMM and GPM eras are being processed in parallel, starting at the beginning of each dataset, with a projected end date no later than Nov. 2023. IMERG V06 and V07 are sufficiently different that users are discouraged from mixing data from the two versions. V07 Early and Late Run processing will commence after the Final Run is completed. The projected timeline for IMERG V07 processing is shown in the figure below. IMERG download links are listed on the GPM website Data Directory

Calvin Becomes First Major 2023 Hurricane in the East Pacific

GPM Overpass of Hurricane Calvin on July 14
Monday, July 17, 2023
After a quiet start, the 2023 eastern Pacific hurricane season recently picked up in activity with the formation of the season’s first major hurricane, Hurricane Calvin. Calvin originated on July 11 from an area of low pressure located about 510 miles (~820 km) south-southwest of Manzanillo, Mexico, which had become organized enough for the National Hurricane Center (NHC) to declare it Tropical Depression 3E (TD 3E) that afternoon. Located over warm sea surface temperatures (SSTs) of around 84 oF (29 oC), thunderstorm activity near the center of TD 3E continued to increase overnight, and
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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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