Joint Research Centre
Digital Earth Lab


The Global Earth Observation System of Systems or GEOSS is an international voluntary effort coordinated by the Group on Earth Observation (GEO) comprising 97 governments and 87 participating organisations.
The GEO Vision is to realize a future wherein decisions and actions, for the benefit of humankind, are informed by coordinated, comprehensive and sustained Earth observations and information. For more information see

About the GEOSS Data Sharing Principles

All governments and organisations that have joint GEO have committed to promoting the implementation of the GEOSS Data Sharing Principles:

  • There will be full and open exchange of data, metadata and products shared within GEOSS, recognizing relevant international instruments and national policies and legislation;
  • All shared data, metadata and products will be made available with minimum time delay and at minimum cost;
  • All shared data, metadata and products being free of charge or no more than cost of reproduction will be encouraged for research and education.

About the GEOSS Data CORE

“The GEOSS Data Collection of Open Resources for Everyone (GEOSS Data-CORE) is a distributed pool of documented datasets with full and open unrestricted access at no more than the cost of reproduction and distribution” where:

  •  “full access” means that all the data in the GEOSS Data-CORE can be accessed, used and redistributed;
  •  “open access”means that data providers may charge at most the cost of reproduction and distribution of the data, although it is expected that in most cases the data in the GEOSS Data-CORE will bemade available at no cost;
  • “unrestricted access” means that no restrictions are placed on the access to, or use and redistribution of the data in the GEOSS Data-CORE.  It should be noted that the following two conditions may be placed on data registered in the GEOSS Data-CORE by data providers (i) attribution and (ii) user registration.  These are not considered to represent restrictions on the access to, or use and redistribution of the data.

There are more than 5 million data resources in the GEOSS Data-CORE. They are accessible from the GeoWebPortal: (From the Home page, expand the Data Access Conditions and choose Data CORE).