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Content which is not specifically affiliated with GPM or TRMM, but which is about the Precipitation Measurement Missions in general.

PPS Down for Temporary Maintenance 6/7/16

The PPS (Precipitation Processing System) will be down today, June 07, 2016 from 8:00am -14:00pm EDT (12:00 - 18:00 UTC). for scheduled maintenance. During this time all data transfers between PPS source and its consumer systems (GDAAC/DISC) as well as Science User services (FTP and STORM access) will be unavailable. You will be informed when PPS systems become available. We apologize for any inconvenience this may cause.

Watershed Science Summer Institute at NASA’s Goddard Space Flight Center

GPM flying over Earth with a data swath visualized.
Wednesday, March 25, 2015
Thank you for your interest in the Watershed Science Summer Institute to be held at NASA’s Goddard Space Flight Center. Read a more detailed description of the program, including dates and expectations here. Unfortunately, we are no longer accepting applications for the 2015 program. For existing applicants or others with any questions about the program, please contact Dorian Janney at dorian.w.janney@nasa.gov
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Test Accordian

GPM flying over Earth with a data swath visualized.
Wednesday, February 25, 2015
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The Transition in Multi-Satellite Products from TRMM to GPM (TMPA to IMERG)

Date Last Updated
October 2nd, 2020
Document Description

The transition from the Tropical Rainfall Measuring Mission (TRMM) data products to the Global Precipitation Measurement (GPM) mission products has begun. This document specifically addresses the multi-satellite products, the TRMM Multi-satellite Precipitation Analysis (TMPA), the real-time TMPA (TMPA-RT), and the Integrated Multi-satellitE Retrievals for GPM (IMERG).

File Downloads
TMPA-to-IMERG_transition_201002.pdf

TRMM Satellite Out of Station-keeping Fuel

Since December 1997, TRMM and the instruments it carries have provided valuable information to researchers, the applications community, and the public. On July 8, 2014, pressure readings from the fuel tank indicated that TRMM is at the end of its fuel. As a result, NASA has ceased station keeping maneuvers and TRMM has begun its drift downward from its operating altitude of 402 km. A small amount of fuel has been retained to conduct debris avoidance maneuvers to ensure the satellite remains safe during the drift down. TRMM observations will continue as the spacecraft descends to 335 km, at
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