Frequently Asked Questions

The Distributed Active Archive Centers (DAACs) are part of NASA's Earth Observing System Data and Information System (EOSDIS). Each of the twelve data centers serves one or more specific Earth science disciplines and provides its user community with data products, data information, user services, and tools unique to its particular science.

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The Global Hydrology Resource Center (GHRC) DAAC is supported by NASA and is managed jointly by the Marshall Space Flight Center's Earth Science Office and The University of Alabama in Huntsville's Information Technology & Systems Center. The GHRC DAAC’s missions are 1) to serve as NASA’s Earth science data stewards for scientific, educational, commercial and governmental communities, with a focus on data for the global hydrologic cycle including precipitation, lightning and severe weather and 2) to provide knowledge augmentation services encompassing tools, infrastructure, user support, and expertise to our stakeholders.

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The GHRC User Services Office staff is the point of contact for all questions, comments, and inquiries about the GHRC web site and all GHRC services. Contact us by phone or e-mail:
GHRC User Services Office
E-mail: support-ghrc@earthdata.nasa.gov
Phone: 256-961-7932
Website: http://ghrc.nsstc.nasa.gov/
Sign up for our User Notification Email List

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1) Lightning Data: https://ghrc.nsstc.nasa.gov/lightning/
2) Passive Microwave Data: http://ghrc.nsstc.nasa.gov/MEaSUREs/
3) Field Campaign Data: http://fcportal.nsstc.nasa.gov/

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Hydrologic Data search, Retrieval, and Order system, (HyDRO)
NASA’s EOSDIS Earth Science Discovery Tool, (REVERB)

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Yes, you can find step-by-step instructions on how to bulk download data at the HyDRO 2.0 Help Page

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Sign up on our EMMA email list or like us on Facebook, LinkedIn, or follow us on Twitter.

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Please visit our tools page at https://ghrc.nsstc.nasa.gov/home/tools-and-technologies.

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The NASA Earthdata website is a centralized location to discover NASA Earth science data and tools. Please see http://earthdata.nasa.gov for more information.

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An overview of data set processing levels may be found here: https://earthdata.nasa.gov/earth-science-data-systems-program/policies/data-information-policy/data-levels.

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GHRC DAAC data are free of charge.

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Please consult the citation examples at https://ghrc.nsstc.nasa.gov/home/content/citing-ghrc-daac-and-data

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The EOSDIS Earthdata Login (formerly called the EOSDIS User Registration System (URS)) provides a centralized and simplified mechanism for user registration, profile management, and authentication services to EOSDIS system components, data centers, and partner applications. You can learn more about the EOSDIS Earthdata Login here and create an account by visiting the EOSDIS Earthdata Login website and clicking on the 'REGISTER FOR AN ACCOUNT' button:
http://urs.earthdata.nasa.gov/

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The Global Change Master Directory holds more than 29,000 Earth science data sets and service descriptions that cover subject areas within the Earth and environmental sciences.
http://gcmd.nasa.gov/

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The Land Atmosphere Near real-time Capability for EOS (LANCE) elements provide near real-time (NRT) EOS data products within 3 hours of satellite observation with high availability. LANCE data and imagery are used for monitoring and analyzing a wide range of natural and man-made phenomena. The NASA LANCE AMSR2 element is located at the GHRC DAAC:
https://earthdata.nasa.gov/data/near-real-time-data/

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HyDRO 2.0 is a data search tool that can help you locate and obtain GHRC data. It was made to be user friendly, concise, and easy to use. More information about HyDRO 2.0 can be found on the HyDRO 2.0 Help Page.

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The Lightning Imaging Sensor (LIS) is a small, highly sophisticated instrument that detects and locates lightning using a combination of optical and electrical components. LIS can detect total lightning (cloud-to- cloud, cloud-to-ground, and intra-cloud flashes) from a space-based platform. LIS operated on the Tropical Rainfall Measuring Mission (TRMM) from 1997 to 2015, and will be launched on the International Space Station (ISS) in 2017. More information about LIS is available at https://ghrc.nsstc.nasa.gov/home/micro-articles/earth-observations-lightning- imaging-sensor.

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A Field Campaign is an observational study planned for a specific location and a defined time period during which measurements are conducted from airborne platforms and/or ground sites to study physical and chemical processes in the atmosphere. More information about Field Campaigns is available at Field Campaign Explorer and at https://ghrc.nsstc.nasa.gov/home/field-campaigns.

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