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  • Masthead platform instrument info VLBI Global Network
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Global VBLI Network CONT17 Experiment

The Crustal Dynamics Data and Information System (CDDIS) supports the International VLBI Service for Geodesy and Astrometry (IVS) as a Primary Data Center. The symbols on this map show locations of Very Long Baseline Interferometry (VLBI) sites supporting the Continuous VLBI Campaign 2017 (CONT17).

VLBI Data and Products

CONT17 legacy sites (yellow, blue) use S/X radio frequency bands; new VLBI Global Observing System (VGOS) antennas (red) use 4 radio frequency bands (2-14 GHz range). Legacy networks look at estimates of Earth Orientation Parameters and investigate network biases; VGOS demonstrate newer technology.


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


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.

Download your Copy of the Summer 2017 EOSDIS Newsletter!

The EOSDIS Newsletter features data set and data tool news, and highlights our top stories, featured data images, webinars, data recipes, and data user profiles.

Fire and smoke in Canada

Image captured on 12 August 2017, by the MODIS instrument, on board the Terra satellite.

Collaborators and Colleagues: Summer Interns are an Integral Part of the EOSDIS Team

More than 30 EOSDIS interns are supporting tasks at the ESDIS Project Office, NASA’s Science Data Systems Branch, and at DAACs across the country this summer.

Webinar: NetCD-what? An Ecologist’s Guide to Working with Daymet and other NetCDF-formatted Data

Event Date: August 30, 2017

During this webinar, we will provide an overview of the netCDF data format and show participants how to open, read, write and plot data that is in the netCDF format. The use case will focus on the Daymet meteorological variables data product.

In the zone

Sea ice may underpin the survival of Antarctic seabirds.

Earth Science Data in the Cloud: The EOSDIS Cumulus Project

As part of the ongoing evolution of EOSDIS data and services, testing and prototyping are underway to see how DAAC data collections can be archived and disseminated using the commercial cloud.

User Profile: Dr. Brian Mapes

Who uses NASA Earth science data? Dr. Brian Mapes, to study large-scale weather and climate processes.

EOSDIS Data and Services Begin Migration to the Cloud

The Common Metadata Repository (CMR) and Earthdata Search are now running in the cloud, which is the start of a new era for users of EOSDIS data and services.

Reverb is Retiring

EOSDIS’s Reverb data search and discovery system retires at the end of 2017, and will be fully replaced by Earthdata Search. Here’s what this means for you.

News & Events

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