Project home

  • Steering group and active participants
  • Climate Forecast Metadata Conventions
  • Climate Model Output Rewriter (CMOR)
  • Obs4MIPs data available on ESGF
  • Contributing obs4MIPs compliant data
  • Obs4MIPs data specifications
  • What's new in 2024?
  • Obs4MIPs in WCRP
  • WGCM Infrastructure Panel
  • Active Task Teams
  • Welcome to obs4MIPs!

    Obs4MIPs is an effort to make observational data more accessible for climate model evaluation, development and research. It does so by providing observational products technically aligned with climate model data, specifically that made available from the World Climate Research Programme’s (WCRP) Coupled Model Intercomparison Project (CMIP). Many obs4MIPs products are made available via the Earth System Grid Federation (ESGF). A series of papers provide background material for the origins and advancement of obs4MIPs (Gleckler et al., 2011; Teixeira et al., 2014; Ferraro et al., 2015; Waliser et al., 2020).

    Version controlled obs4MIPs compliant datasets provide the foundation for the effort. Some of these products are made available via ESGF, with version control and other registered content managed on a separate Github repository.

    Discussions are underway to revamp obs4MIPs with a priority to make products more readily available. If you would like to be involved please contact us and let us know (


    Send email to obs4MIPs team:, or Peter Gleckler (PCMDI, general info, Simon Pinnock (ESA, ESA related info, Greg Elsaesser (NASA GISS, NASA related info, Nico Caltabiano (WCRP,, Paul Durack (PCMDI, for ESGF info.


    Ferraro, R., D. Waliser, P. Gleckler, K. Taylor, and V. Eyring, 2015: Evolving obs4MIPs to Support Phase 6 of the Coupled Model Intercomparison Project (CMIP6). Bull. Amer. Meteor. Soc. 96:8 ES131-ES133,

    Gleckler, P., R. Ferraro, and D. Waliser, 2011: Improving use of satellite data in evaluating climate models, Eos Trans. AGU, 92(20),

    Teixeira, J., D. Waliser, R. Ferraro, P. Gleckler, T. Lee and G. Potter, 2014: Satellite Observations for CMIP5: The Genesis of Obs4MIPs. Bull. Amer. Meteor. Soc., 95, 1329–1334,

    Waliser, D., Gleckler, P., Ferraro, R., Taylor, K., Ames, S., Biard, J. Bosilovich, M., Brown, O., Chepfer, H., Cinquini, L., Durack, P., Eyring, V., Mathieu, P., Lee, T., Pinnock, S., Potter, G., Rixen, M., Saunders, R., Schulz, J., Tuma, M. (2020). Observations for Model Intercomparison Project (Obs4MIPs): status for CMIP6. Geosc. Mod. Dev. 13. 2945-2958,

    Document version: 10 January 2024