Data Access

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Tutorial: How to Access the new PPS FTPS Servers

Due to NASA network policies the NASA Precipitation Processing System (PPS) will be transitioning from FTP to FTPS for access to download GPM and TRMM data. As a result of this change, users may need to update the methods they use to download data. Due to these changes users will no longer be able to access the PPS FTPS servers using a web browser, and will need to connect using either the command line or dedicated file transfer software.

Anomalies in TMPA-RT Dec. 18 - 19, 2016

Anomalies in the DMSP F-16 input data for the TMPA-RT created streaks of precipitation over open-ocean regions. We have now deleted faulty data and rerun the TMPA-RT for the period:

18 December 2016 at 09 UTC to 19 December 2016 at 18 UTC.

Please re-pull the affected data files.

There appears to be no corresponding issue with the IMERG data files due to different quality control routines.
 

Training v2

Recent Training Sessions

(2019)

Introductory Webinar: Overview and Applications of Integrated Multi-Satellite Retrievals for GPM (IMERG) Long-term Precipitation Data Products

October 16, 2019

PMM Publisher API Documentation

Overview

The PMM Publisher API can be used to automatically retrieve precipitation and related applications datasets and associated metadata for further processing by your tool of choice. Here we will outline the basic structure of requesting data from the API and interpretting the API response.

Gauge Combination Error in 2016, Affects 3B42/43 and IMERG Final Run

We have discovered that the gauge analysis was erroneously omitted from the "production" 3B42/43 products starting with January 2016 due to issues with handling a change of data format.  Thus, the production 3B42/43 are being re-computed.  This does not affect the TMPA-RT suite of products, since no month-to-month gauge data are used.

Note this issue also affects the current Version 3 IMERG Final Run products for January 2016.  They are being recomputed as well.  The current Version 3 IMERG Early and Late Runs are not affected.

Jan. 2016 GPM IMERG and Jan.-Jun. 2016 TMPA 3B42/3B43 Data Products are Being Recalled and Replaced

UPDATE 9/27/16:

January 2016 IMERG has been regenerated and posted.  This was necessary
due to an error that omitted the gauge analysis in the Final products.
Also, 3B42/3B43 have been recomputed and posted. Let me know if you have
any further questions. 

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PPS has removed the January 2016 GPM IMERG and January through June 2016 3B42/3B43 TMPA products from our ftp archive:

ftp://arthurhou.pps.eosdis.nasa.gov/

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. 

File Naming Convention for Precipitation Products For the Global Precipitation Measurement (GPM) Mission

Published Date: 
10/14/2015

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. 

Mission Affiliation: 
Major Category: 
Author(s): 

Interactive Precipitation Visualizer v2

Using the PPS FTP

Use of the PPS FTP to download GPM and TRMM data is free, but you are required to first register your email address. This allows the PPS to track usage statistics and send useful messages about the satellite and data availability. Once you have registered and verified your email address, return to this page to continue to the FTP to download data. 

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