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General FAQ

What is CoG?

CoG is a collaboration environment that provides the Earth science community with a distributed data and computation platform that also supports project hosting and virtual collaboration networks. CoG is free and open source and can be downloaded and installed by anyone.

What does the term CoG mean?

A cog is a wheel or gear in a multi-component mechanism. The term CoG is used to reflect the many functional pieces/tools that make projects in the Earth sciences successful.

What is the difference between CoG and ESGF?

In 2016, CoG became the Web Front End to the Earth System Grid Federation. As such ESGF nodes also have CoG projects and use the CoG search to access data. CoG can be installed without ESGF.

Do I need a CoG account?

You only need to sign up for an account if you want to join a project or you need to download data.

How can I learn to use CoG?

We maintain a list of tutorials covering all aspects of CoG functionality.

I am having trouble downloading data.

Questions related to data should be sent to They are based in Germany.

Last Update: May 24, 2016, 11:09 a.m. by Torsten Rathmann
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