Quick Links
- News and Updates
- NASA GPM Website
- JAXA (Japan Aerospace Exploration Agency)
- GES-DISC (GSFC Earth Sciences Data and Information Services Center)
- GPM Hurricane/Typhoon Overpasses
- Colorado State Univ/PPS MEaSURES Product
- Data Search,Custom Subsets and Subscriptions(STORM)
- Register to obtain TRMM,GPM and Partner Data Products
- Instructions for Accessing GPM Near Realtime Data
- DOI (Digital Object Identifiers) Services and Registration (ISO 26324)
- GPM Ground Validation Data
- Global Hydrology Resource Center Field Campaigns
Welcome to the PPS (Precipitation Processing System) Public Website
The Precipitation Processing System (PPS) evolved from the Tropical Rainfall Measuring Mission (TRMM) Science Data and Information System (TSDIS). The purpose of the PPS is to process, analyze and archive data from the Global Precipitation Measurement (GPM) mission. The GPM mission includes data from the GPM core satellite, TRMM (which ceased operation in 2015) and its partner satellites.. The PPS also supported TRMM by providing validation products from TRMM ground radar sites. All GPM and Partner data products are available to science users and the general public from PPS's FTPS and HTTPS Data Archives. Please note that you need to register to be able to access this data. You can quickly register with PPS at our registration portal: Register with PPS
Please note, that this registration requirement is now mandatory per NASA policy and the new metric requirements. We do not accept email addresses that require us to take a manual action (Boxbe, etc.) to complete this registration process. Please do not use a university address, etc. that is a reflector to gmail but use the direct gmail address instead.
Once registered with us, you can use your registered Email address as both your User Name and Password to access our public 'arthurhou' production data archives, STORM and the 'jsimpson' near-realtime (NRT) data archives (optional). Registered science users will have access to our 'arthurhou' production data archive and be able to transfer data via the Primary "FTPS" method and also use a Secondary "HTTPS" method to access PPS's GPM production data archive. The HTTPS archive location can be found here:
PPS /GPM Public Data Archive
PPS offers a selection of tools such as the Orbit Viewer THOR, the GPM Near Real Time Viewer and the new release of RAIN (Regional Animations of IMERG in Near-realtime). PPS Users can find all these tools and resources here.
PPS maintains an anonymous public web area for our science team and external affiliated developers. This site enables the one way sharing of non-sensitive and unclassified data files, etc. Users can also create hidden folders to share with select colleagues. This provides enhanced security. The anonymous public web site is located at: https://gpmweb2https.pps.eosdis.nasa.gov/pub/ Please click here for more details..
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Due to changes for GPROF and Radar data, the Version 08 (V08) radar 2ADPR and L3 radar products were delayed and released around March 18, 2026. The single frequency Version 08 (V08) products from the DPR instrument: 2AKu and 2AKa, have also been released. Important changes to Level 2 and Level 3 GPROF data will also be made. See all details for complete information. Please also refer to these release notes and addendum. documents.
The PPS GPM NRT has transtitioned from FTP to FTPS and https data retrieval as of June 18, 2020 on jsimpson
Please refernce IMPORTANT GPM NRT documents at the GPM NRT Information page for full details. These documents include the following: : FTP to FTPS Transition, jsimpsonhttps_retrieval, and SDPF Transition from FTP to FTPS . The first 3 documents referenced can also be found in the GPM Documentation page. Please also see arthurhou FTP to FTPS Transition and Retrieval from arthurhouhttps for details about data retrieval from the PPS GPM production area.
GPM Hurricane/Typhoon Overpasses JAXA/EORC offers a very good database of GPM overflights which users may find helpful to identify specific times and data products which captured GPM DPR Hurricane/Typhoon Overpasses.
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A Master (DOI) list of GPM, GPM Constellation (partner) Products and TRMM-Era Data Products can be viewed here.
GPM NRT (Near-Realtime) Data users can find GPM data on our jsimpson (Joanne Simpson) https/ FTPS server. To gain access to the "jsimpson" NRT FTPS/ https server, you must indicate in the registration information page that you" intend to access these products immediately!". If you are already registered, but cannot access the NRT ftps area; please enter your "registered" Email address on the registration information page and then click "Verify Email or Update Info". Once you receive the "Manage PPS Registration" Email, click on the link and check the appropriate request button/box for "Near-Realtime Products" to ensure data access.
Registered users can also search for GPM, partner and TRMM data, order custom subsets and set up subscriptions using our PPS Data Products Ordering Interface (STORM)
Tropical Rainfall Measuring Mission (TRMM) post-Version 7 products fully incorporate TRMM data into the Global Precipitation Measurement (GPM) mission data processing. TRMM Level 2 (L2) and Level 3 (L3) products have now become part of the GPM data suite. TRMM products are now in GPM HDF5 format and are labeled with product versions V05A/V06A and now V07.
When visiting this website and using STORM and other PPS services, we recommend that all users have the most up to date browser software version to maintain full compatibility. Please note that some incompatibility issues can arise when using the "Safari" web browser We recomend using Firefox or Chrome for the best user experience. As of 9/01/2016, this website in keeping with NASA security guidelines supports the most current TLS protocol which is TLS 1.2 , but PPS may support other protocols as circumstances necessitate.
PPS System Maintenance Schedule
During the morning to early afternoon on the 1st and 3rd Tuesday of each month, PPS system and data server may be down for maintenance. .
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Previous IMPORTANT PPS News and Update Announcements can be viewed here:
PPS Public Data Archive - GPM and partner satellite data products and files for the entire mission can be found here (Example for Secondary HTTPS access). 
PPS Orbit Viewer -THOR (Tool for High-resolution Observation Review) For (Linux, Windows, and Mac OS X) Get the latest Release. 
STORM (Science Team On-Line Request Module) Browse and order GPM data with PPS STORM (Science Team On-Line Request Module) 
GPM NRT (Near Real-Time) Interactive Viewer. This tool displays NRT GMI Level 1, DPR Level 2, GPROF (GMI Level 2), DPR/GMI combined Level 2 and IMERG Half-hour Early dataas soon as it is available in the NRT archive on a three-dimensional interactive globe.
GPM (Global Precipitation Measurement) Mission HomeGPM web site
GPM DocumentsGPM File and naming Specifications for the Global Precipitation Measuring Mission (GPM).
GPM ATBD (Algorithm Theoretical Basis Documents)GPM Algorithm Theoretical Basis Documentation for Level 1, Level 2 and merged product algorithms and other variables.
GPM Ground Validation (GV) DataWeb Portal for accessing the various radar, disdrometer, gauge and other instrument data sets supporting GPM GV activities
GHRC (Global Hydrology Resource Center) Field Campaign DataThe mission of the GHRC DAAC is to provide a comprehensive active archive of both data and knowledge augmentation services with a focus on hazardous weather, its governing dynamical and physical processes, and associated applications. Within this broad mandate, GHRC will focus on lightning, tropical cyclones and storm-induced hazards through integrated collections of satellite, airborne, and in-situ data sets. This link focuses on the field campaigns including GPM-GV.
GPM Science Algorithm ToolkitThis version of GPM Science Algorithm Toolkit (TKIO), "Toolkit for I/O (input/output)" incorporates the initial GPM product formats.
PPS Rules of Behavior (For PPS staff) and (External NASA Affiliates)
PPS User Access Request Form (GSFC Only)
Accessing GPM GMI Near-realtime Data
TRMM (Tropical Rainfall Measuring Mission) Ceased operation in 2015
TRMM documentation TRMM data product documentation can be found here (For historical purposes).
TRMM Science Algorithm Toolkit
The TRMM Science Algorithm Toolkit (TKIO) Developed by PPS, "Toolkit for I/O (input/ output)" allowed seamless integration of TRMM algorithms into the PPS environment (For historical purposes).
