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The Earth System Grid Federation (ESGF) is a collaboration that develops, deploys and maintains software infrastructure for the management, dissemination, and analysis of model output and observational data. ESGF's primary goal is to facilitate advancements in Earth System Science. It is an interagency and international effort led by the Department of Energy (DOE), and co-funded by National Aeronautics and Space Administration (NASA), National Oceanic and Atmospheric Administration (NOAA), National Science Foundation (NSF), and international laboratories such as the Max Planck Institute for Meteorology (MPI-M) German Climate Computing Centre (DKRZ), the Australian National University (ANU) National Computational Infrastructure (NCI), Institut Pierre-Simon Laplace (IPSL), and the British Atmospheric Data Center (BADC). The ESGF mission is to:

  • Support current CMIP activities, and prepare for future assessments
  • Develop data and metadata facilities for inclusion of observations and reanalysis products for CMIP use
  • Enhance and improve current climate research infrastructure capabilities through involvement of the software development community and through adherence to sound software principles
  • Foster collaboration across agency and political boundaries
  • Integrate and interoperate with other software designed to meet the objectives of ESGF: e.g., software developed by NASA, NOAA, ESIP, and the European IS-ENES
  • Create software infrastructure and tools that facilitate scientific advancements

ESGF is a component architecture expressly designed to handle large-scale data management for worldwide distribution. The team of computer scientists and climate scientists has developed an operational system for serving climate data from multiple locations and sources. Model simulations, satellite observations, and reanalysis products are all being served from the ESGF P2P distributed data archive.

ESGF portals like this one provide access to the output of the climate models contributing to the next assessment report of the Intergovernmental Panel on Climate Change IPCC through the Coupled Model Intercomparion Project CMIP. The WGCM Infrastructure Panel is the official CMIP document home.

Search Data

NOTE:  Globus Transfers for LLNL-hosted data must now use the Metagrid site.

Please try our updated ESGF web application (named "Metagrid"), now undergoing beta testing.  For this test release we are reaching out for help from users in the community to report any issues they encounter with the application.  The beta-test web application can be found at the following site:
Please see the following page for more information including a FAQ:

The following projects are hosted on LLNL data or index nodes, and these are unrestricted.  Downloads should be performed with the -s option to a wget script without the need to login. When using this method for download, ensure you are not using additional options eg. -s and -H should never be combined.

Search data for...
All projects (except for CMIP6)   -   Metagrid -beta
CMIP6   -    Metagrid -beta
Coupled Model Intercomparison Project Phase 6
CMIP5   -    Metagrid -beta
Coupled Model Intercomparison Project Phase 5

E3SM    -    Metagrid -beta
Energy Exascale Earth System Model

CMIP3    -    Metagrid -beta
Coupled Model Intercomparison Project Phase 3
input4MIPs   -    Metagrid -beta
input datasets for Model Intercomparison Projects
obs4MIPs     -    Metagrid -beta
observations for Model Intercomparison Projects
CREATE-IP   -    Metagrid -beta
Collaborative REAnalysis Technical Environment

The facetted data search is accessible from the "Search and Download Data" widget on the right of the page through the "Search with options" link.

User Help and Related Links

If you do not find want you are looking for, enable 'Show All Replicas' in the faceted search engine to increase the chances of finding a suitable federated node in the grid that hosts the data of your interest.

Learn the full capabilities of the ESGF service by visiting the User Tutorial and FAQs.

Find the model documentation at the Earth System Documentation ES-DOC portal. As part of the ES-DOC ecosystem, the Errata Service centralizes timely information about known issues of ESGF data. If you do not find what you are looking for, please write to the modelling group, the contact information is in the header of the NetCDF file.

For data management issues, please write the following to the emailing list:

- Your browser and operating sytem, e.g. Firefox 68.0.2 on Ubuntu 18.04
- Your OpenID
- The complete name of the file(s) or data set(s) you attempt to download
- The host node, for instance,,,...
- The steps required to reproduce the problem
- The exact error message. Run the script in debug mode to get a detailed error message: $ bash -H -d


If you want to meet the community and be informed of downtime notifications and updates, please register to the emailing list here.

Expert users may also want to use the ESGF Search RESTful API.

  1. For technical support please have a look at the FAQ or tutorials.
  2. If you can not find what you are looking for please contact the ESGF user support:
  3. Expert users may also want to use the ESGF Search RESTful API from

Hosted Projects


CMIP3         input4MIPs

Last Update: Aug. 30, 2023, 7:04 a.m. by Admin User
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