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  • Masthead platform instrument info Global Space Geodesy Sites
  • Masthead date range July 2018

Global Space Geodesy Network

Users download data produced by space geodesy sites through NASA’s CDDIS: Global Navigation Satellite System (red), real-time GNSS (yellow), Satellite Laser Ranging (green), Very Long Baseline Interferometry (blue), and Doppler Orbitography and Radio-positioning Integrated by Satellite (orange).

Space Geodesy Data Maintain a Terrestrial Reference Frame

NASA’s CDDIS supports the International Association of Geodesy (IAG) as a Global Data Center. The symbols indicate the current space geodesy site locations. Geodetic data enable the precise determination of positions and velocities, allowing researchers to monitor change over time.


NASA's data policy ensures that all NASA data are available fully, openly, and without restrictions. Here's what this means to you.

User Profile: Dr. Larry O'Neill

Who uses NASA Earth science data? Dr. Larry O’Neill, to explore the effects of air-sea interactions on weather, ocean, and climate.

Ferguson Fire, California, USA

Image captured on 15 July 2018, by the VIIRS instrument, on board the joint NOAA/NASA Suomi-NPP satellite.

Closed season

In Mexico’s escalating water crisis, a view from the sky provides answers.

Daymet Data Take the Planet’s Pulse

Daymet data from NASA’s Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) provide almost 40 years of weather measurements for North America and are ORNL DAAC’s most popular products.

NASA’s EOSDIS and the International Council for Science (ICSU) World Data System (WDS)

Through a shared objective of ensuring the free and open availability of Earth science data, NASA and the WDS are working together to improve international data stewardship, archiving, and use.

Nearly 20 Years of Change at Your Fingertips

Interactively explore your world your way with nearly 20 years of MODIS global imagery and the EOSDIS Worldview data visualization application.

The EOSDIS Quarterly Update- Spring 2018 Newsletter is now online!

Find data set and data tool news, top stories, featured data images, webinars, data recipes, and data user profiles.

EOSDIS SIPS and their Role Ensuring Consistent Long-Term Global Observations of Atmospheric Ozone

The OMI and OMPS Science Investigator-led Processing Systems (SIPS) ensure that ozone data collected by instruments aboard the Aura and Suomi-NPP satellites reach global users.

Collaborate With Us

EOSDIS has several channels that allow collaboration with the scientific community, EOSDIS data holdings and directly with NASA.

  1. Welcome to Earthdata 3.0

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  2. Science Disciplines

    Browse by science discipline to see available measurements and supporting DAACs.

  3. News & Events

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  4. Collaborate

    Collaborate with us through our API & program access points.

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