Global Hydrology Resource Center (GHRC)
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GHRC is one of NASA's Earth Science Data Centers and a collaboration between MSFC and the University of Alabama in Huntsville. water drop
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Field Campaigns
Tropical Storm Tracks NEW
AMSU Temp Trend Graphs
Lightning Imaging Sensor

NASA Information Contact:
Rahul Ramachandran, Global Hydrology and Climate Center

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The GHRC repository is included in the Thomson Reuters Data Citation Index
  • IPHEx ER-2 Pilot, Stu Broce, flying through clouds from 65,000 feet on May 24, 2014. Some of the cells in these photos were monstrous and reached well over 50,000 feet. Stu stated, "After sunset, I got to watch the best lightning show I've ever seen, though it was the first time I've hung out over thunderstorms on purpose."
  • Lightning and Atmospheric Electricity ResearchLightning data available from Earth orbiting and ground based instruments.
  • Passive Microwave DataNew SSM/I and SSMI/S datasets are now available from the GHRC.
  • Ground Validation of NASA's Global Precipitation Measurement missionData from ground based and airborne instruments support validation of satellite measurements.
  • ORDER GHRC DATA with HyDROThe GHRC data search and order system provides easy access to all GHRC data. Search by date, time, geographic region, instrument, platform, and many other options.
  • Internal structure of Hurricane Isaac depicting precipitation intensity and lightning from LIS
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What's New

IFloodS Met One Rain Gauge Pairs dataset published
7/22/2014 Global Hydrology Resource Center (GHRC) has published the dataset GPM Ground Validation Met One Rain Gauge Pairs IFloodS...

GHRC represented at IGARSS meeting and Focused Technical Workshop
7/22/2014 GHRC DAAC Manager R. Ramachandran participated in the IEEE Geoscience and Remote Sensing Society (GRSS) Administrative Committee meeting July 11-12 in Quebec City, Canada. GHRC PI S. Graves made a presentation on "Considering the Way Forward for Data Science and International Climate Science" at the Focused Technical Workshop: Improving Data Mobility & Management for International Climate Science on July 14-16 in Boulder, CO ...


About the GHRC

The Global Hydrology Resource Center (GHRC) provides both historical and current Earth science data, information, and products from satellite, airborne, and surface-based instruments. GHRC acquires basic data streams and produces derived products from many instruments spread across a variety of instrument platforms. GHRC is supported by NASA and is managed jointly by the Marshall Space Flight Center's Earth Science Department and the University of Alabama in Huntsville's Information Technology & Systems Center.

Search and Access Data
We have all of the GHRC data holdings available through our search and order tool, HyDRO at If you know specifically what GHRC datasets you want, you can go directly to the Dataset List page. Please contact GHRC User Services at if you have any questions.
Iowa Flood Studies (IFloodS)
IFloodS Field Campaign

The Iowa Flood Studies (IFloodS) experiment took place in the central to northeastern part of Iowa during the April–June 2013 period. The field campaign was the first of several hydrology-oriented field efforts to be conducted by the NASA GPM (Global Precipitation Measurement) Ground Validation (GV) program. The goals of IFloodS were to quantify the physical characteristics and space/time variability of rain; assess satellite rainfall retrieval uncertainties at instantaneous to daily time scales; assess hydrologic predictive skill as a function of space/time scales, basin morphology, and land use/cover; discern the relative roles of rainfall quantities such as rate and accumulation as compared to other factors in flood genesis; and refine appoaches to the “integrated hydrologic GV” concept based on IFloodS experiences and apply them to future GPM Integrated GV field efforts.

Lightning Imaging Sensor
Lightning Data
Two space-based instruments have collected lightning data worldwide for the past fifteen years, first the Optical Transient Detector (OTD) and later the Lightning Imaging Sensor (LIS). Using the vantage point of space, these instruments have made observations that have led researchers here at the Global Hydrology and Climate Center to make significant strides in understanding the distribution, nature, and frequency of lightning on a global scale.
Hurricane Studies
Hurricane Studies
The Convection and Moisture Experiment (CAMEX) archive provides data from the 1998 CAMEX-3 field experiment and the 2001 CAMEX-4 field experiment in Jacksonville Florida. Data is also available from the Tropical Cloud Systems and Processes (TCSP) mission in 2005 in Costa Rica and NASA African Monsoon Multidisciplinary Analyses (NAMMA) mission in 2006 in the Cape Verde Islands. These experiments produced high-resolution spatial and temporal information of hurricane structure, dynamics, and motion.
The DISCOVER Project
The primary objective of the Distributed Information Services for Climate and Ocean Products and Visualizations for Earth Research (DISCOVER) Project is to provide highly accurate, long-term ocean and climate products suitable for the most demanding Earth research applications via easy-to-use display and data access tools. Global hydrological parameters such as sea surface temperature, atmospheric water vapor, wind direction, and atmospheric temperature, are derived from several passive microwave instruments aboard TRMM, NOAA-15, NOAA-16, and SSM/I satellites.

Most data are publicly available, although some restrictions apply on the distribution of commercially obtained data. All data and products are currently free of charge. Select Dataset list from the menu for a complete list of our data holdings. Please contact GHRC User Services if you need additional information or assistance in navigating these pages.