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warn_icon.gif IMPORTANT MESSAGE Nov 23, 2015    Phasing out TRMM Version 6   

GES DISC is in the process of phasing out TRMM Version 6 data that covered the period December 1997 - June 2011. These data were superseded and obsoleted by the much improved Version 7. We also do remind that data from the TMPA Version 7 are still produced, even though the TRMM satellite was decommissioned in April, and deorbited in June, 2015. The Version 6 data will first be reduced in visibility in web search engines  and documentation, and then physically removed from the on-line archives by the end of 2015.

warn_icon.gif IMPORTANT MESSAGE Jul 24, 2015    Why do my Data Holdings look different?    

Accessing your data through the GES DISC web site may seem a little unfamiliar to you to these days, but we can assure you, your data is all still available. The location of the data in the online archive has not changed.

The GES DISC has implemented a new interactive interface to make finding data easier than ever. We've added features like searching by keywords, filtering by criteria such as measurements, processing level and spatial resolution, and sortable data columns so now you can fine tune your search results. To get you started we put together a Help document to introduce you to the new interface. If you have any questions about the new design please contact us using the Feedback link in the upper right-hand corner or contact the GES DISC Help Desk by sending email to

Supporting the Hydrological Sciences Laboratory (HSL)

The Hydrology DISC supports data products generated by GSFC's Hydrological Sciences Branch. Data products from the North America Land Data Assimilation System (NLDAS) and the Global Land Data Assimilation System (GLDAS) can  be accessed through anonymous ftp, the Mirador search and access tool or the GrADS Data Server (GDS). NLDAS and GLDAS systems integrate data from multiple space-based Earth observing systems using advanced land surface modeling and assimilation techniques. These products support weather and climate forecast experiments, water resources applications, and water and energy cycle research.

The data are provisional and subject to change as model improvements are implemented and new input data sets become available.

Other atmospheric moisture and precipitation products are available from the AIRS and Precipitation Data and Information Services Centers.

Data Rods (Time Series)  for Hydrology Community

NLDAS and GLDAS User Mailing List:

Latest News

The NEWS Web climatology data set provides mean water and energy fluxes for the regions shown in the map.
Nov 04, 2015 - NEWS WEB Climatology Data Set Version 1.0 Released by NASA GES DISC

NASA Energy and Water cycle Study (NEWS) Water and Energy Budget (WEB)

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Submit an image for the 2nd Giovanni Image Hall of Fame Class!
Oct 23, 2015 - Special October 2015 issue of The Giovanni News is Online

Accepting submissions for the 2nd Giovanni Image Hall of Fame Class

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Giovanni-4 serves NASA Earth science data and interdisciplinary research with a multitude of analytical options, faster performance, and portability to other NASA data centers. Giovanni-4 will soon be available as open source software.
Sep 01, 2015 - Giovanni-4 takes center stage at the NASA GES DISC

Faster, more capable data exploration system replaces the previous version (Giovanni-3)

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MODIS image of the tropical Atlantic Ocean, June 24, 2009. Saharan dust and the ITCZ cause hemispheric asymmetry for aerosols and clouds, as described by Kishcha et al. Gray areas are gaps between observational swaths.
Aug 31, 2015 - July and August 2015 issues of The Giovanni News are online

July issue features summaries of six research papers using Giovanni; August issue discusses dust & color palettes

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"Data Rods" provide a way for hydrologists and meteorologists to easily use data acquired by NASA satellites.
Aug 06, 2015 - “Data Rods” from the NASA GES DISC

Transforming satellite observations of Earth into temporal data for specific locations

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Last updated: Jun 29, 2015 12:19 PM ET