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  • Masthead platform instrument info GNSS Global Network
  • Masthead date range January 2017

Global GNSS Network

The symbols on this map show current locations of Global Navigation Satellite System (GNSS) sites that provide data of varying temporal time spans and latency. NASA’s Crustal Dynamics Data Information System (CDDIS) supports the International GNSS Service (IGS) as a Global Data Center.

GNSS Data and Products

GNSS sites provide data in daily (red), hourly (yellow), sub-hourly (blue), and/or real-time (orange) increments. Hourly, sub-hourly, and real-time data allow analysts to generate products for applications needing more frequent updates, e.g., positioning, navigation, timing, and disaster monitoring.

About EOSDIS

The Earth Observing System Data and Information System is a key core capability in NASA’s Earth Science Data Systems Program. It provides end-to-end capabilities for managing NASA’s Earth science data from various sources—satellites, aircraft, field measurements, and various other programs.

Fires in Chile

Image captured on 22 January 2017 by the VIIRS instrument, on board the joint NASA/NOAA SNPP satellite.

Bringing Light to the Night: New VIIRS Nighttime Imagery Available through GIBS

New imagery products available through GIBS provide stunning views of Earth at night.

Webinar: A New Era for Gridded Passive Microwave Data at the NASA NSIDC DAAC

Event Date: February 1, 2017

Satellite passive microwave sensors provide particularly useful Earth observations as they can 'see’ through clouds and collect measurements both day and night. Join us to learn more about a new, enhanced-resolution passive microwave dataset!

User Profile: Dr. Nancy Glenn

Who uses NASA Earth science data? Dr. Nancy Glenn, to study dryland ecosystems.

NASA Earth Science Data: Yours to Use, Fully and Without Restrictions

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

NASA EOSDIS 2016 Data User Profile Yearbook Released!

NASA's Earth Observing System Data and Information System (EOSDIS) is pleased to announce the 2016 EOSDIS Data User Profile Yearbook.

Data Chat: Kevin Murphy

Talking about NASA’s EOSDIS Earth science data collection with NASA Program Executive Kevin Murphy

Where the wetlands are

A new map breaks down conservation borders.

EOSDIS releases new Handbook

EOSDIS releases the EOSDIS Handbook with the purpose of describing EOSDIS’s functions, architecture and information model.

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

    Enter your search term to search datasets, news, and articles.

  2. Science Disciplines

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

  3. News & Events

    Click on one of these filters to see news & events specifically related to your selection.

  4. Collaborate

    Collaborate with us through our API & program access points.

  5. Feedback Module

    Have a question or comment? Send us your feedback and we'll get back to you as soon as we can.

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