1. Home
  2. GPM

GPM

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

Revisiting Hurricane Dorian

GPM Overpass of Hurricane Dorian
Monday, June 1, 2020
Tropical cyclones, known as hurricanes in the western hemisphere, can bring damaging high winds, storm surge, and flooding rainfall to the coastal communities they hit. Satellite instruments - and the detailed near real-time atmospheric data that they provide - have revolutionized the way we see hurricanes and other disasters as they happen. But it’s about more than just seeing. NASA, working with counterparts at NOAA, FEMA, and elsewhere are sharing ever more precise data to aid local communities in coping with disasters. With better information, emergency responders have the tools to make...
Read More

GPM Sees Cyclone Amphan Approach India

Cyclone Amphan IMERG Rainfall Totals
Wednesday, May 20, 2020
On May 16, 2020, NASA / JAXA's GPM Core Observatory satellite observed the early stages of Tropical Cyclone Amphan as it tracked north over the Bay of Bengal. The below GPM overpass shows precipitation within Cyclone Amphan a day before it explosively intensified into a category 4-equivalent cyclone. Even at this early stage, Amphan produced heavy rain rates near its center and to its west and southwest. View fullscreen in STORM Event Viewer NASA monitored the heavy rain associated with Tropical Cyclone Amphan as it made landfall at 0900 UTC (2:30 PM local time) on May 20, 2020. Landfall...
Read More

Typhoon Vongfong Hits the Philippines

Typhoon Vongfong IMERG Rainfall Totals
Monday, May 18, 2020
The first typhoon of the season, Vongfong, struck the central Philippines this past week (where it is known as Ambo) as a strong category 2 storm, bringing strong winds and locally heavy rainfall. Vongfong formed into a tropical depression in the southern Philippine Sea west of Palau on Sunday May 10th from a disturbance that had been slowly making its way westward over the past several days. After becoming a depression, the system moved northward toward the central Philippine Sea and slowly began to intensify. Then, on the 12th when it reached tropical storm intensity, Vongfong’s northward...
Read More

GPROF V05B Release Notes

Date Last Updated
April 17th, 2018
Document Description

GPROF V05 is the rainfall algorithm used in TRMM V8. It matches in all ways the algorithm from the retrieval for GPM GMI and other satellites in the constellation. The Goddard Profiling Algorithm is a Bayesian approach that nominally uses the GPM Combined algorithm to create it's a-priori databases. Given the importance of these databases to the final product, they are worth reviewing before discussing particular changes to the algorithm. GPROF V03 was implemented at the launch of the GPM mission and thus had no databases from the GPM satellite itself.

File Downloads
GPROFV05B_releasenotes.pdf

Satellite Data Empowers Farmers

Field in Pakistan
Tuesday, April 21, 2020
Download this video from the NASA Goddard Scientific Visualization Studio Today, India is among the world’s most water-scarce countries. This means that it does not have enough freshwater resources to meet the needs of all the people who live there. Mismanagement of water resources have largely contributed to the country’s limited water supplies. A growing competition over finite water resources will have serious implications for Indian farmers, as well as India’s food security. More than 70% of India’s population rely on agriculture as a source of livelihood. Even more so, an estimated 82% of...
Read More

Building Climate Resilience with Satellite Data

Farmers looking at an App
Tuesday, April 21, 2020
Unexpected shocks from natural hazards can affect populations throughout the globe, threatening sustainable development and resilience. However, the impacts of these events, such as extreme precipitation or drought, disproportionately affect the developing world where individuals often are not insured and live and work in conditions that leave them vulnerable to natural disasters. This can lead to significant economic and environmental challenges if preventive measures or mitigating measures are not taken in time. To reduce risks from natural disasters and build climate resilience, decision...
Read More

GPM Sees Cyclone Harold in the South Pacific

GPM Overpass of Cyclone Harold from April 6th, 2020
Friday, April 10, 2020
Video credit: Greg Shirah, Kel Elkins, Alex Kekesi (NASA Goddard Scientific Visualization Studio). For more information or to download this public domain video, go to: https://svs.gsfc.nasa.gov/4812#29226 A Category 4 cyclone, the most powerful yet of 2020, made landfall on the South Pacific nation of Vanuatu on Monday, not long before this GPM overpass from April 6th, 2020 at 1:41 UTC. Tropical Cyclone Harold developed from a low pressure system that was observed to the east of Papua New Guinea last week, and has tracked to the southeast, where it has already caused flooding and loss of life...
Read More

Drought and the Australia Wildfire Season

IMERG rainfall totals from Australia in November 2019
Thursday, March 12, 2020
Droughts and dry, arid conditions are naturally occurring phenomena in Australia. Such an environment is conducive to wild fires, which are started mainly by lightning and can occur throughout the year, but typically emerge between October and April and are most prevalent during the Southern Hemisphere summer; they are part of the seasonal cycle in Australia. However, some years are worse than others, and the 2019-2020 wild fire season was especially bad. It has been estimated that upwards of 46 million acres were burned, or roughly the size of the entire state of Washington. In terms of area...
Read More

File Specification for GPM Products

Date Last Updated
May 26th, 2023
Document Description

This document describes the data file formats for all GPM products. Metadata is described in Metadata for GPM Products. The purpose of this file specification document is to define the file content and format for the GPM data products. The file specifications have been reviewed by the algorithm developers. Formats are expected to change for each processing cycle.

Version 7.16 TKIO 3.100

File Downloads
filespec.GPM_.pdf

Master List of PPS Data Products and DOIs

Date Last Updated
July 11th, 2018
Document Description

This document contains a comprehensive list of all data products produced by the NASA Precipitation Processing System, including their Document Object Identifiers (DOIs)

File Downloads
Master_List_of_PPS_Data_Products.pdf
Subscribe to GPM