Under the World Climate Research Programme (WCRP), the Working Group on Cloupled Modelling (WGCM) established the Coupled Model Intercomparison Project (CMIP) as a standard experimental protocol for studying the output of coupled atmosphere-ocean general circulation models (AOGCMs). CMIP provides a community-based infrastructure in support of climate model diagnosis, validation, intercomparison, documentation and data access. This framework enables a diverse community of scientists to analyze GCMs in a systematic fashion, a process which serves to facilitate model improvement. The Program for Climate Model Diagnosis and Intercomparison (PCMDI) archives much of the CMIP data. Part of the CMIP archive constitutes phase 3 of the Coupled Model Intercomparison Project (CMIP3), a collection of climate model output from simulations of the past, present and future climate. This unprecedented collection of recent model output is officially known as the "WCRP CMIP3 multi-model dataset". It is meant to serve the Intergovernmental Panel on Climate Change (IPCC)'s Working Group 1, which focuses on the physical climate system -- atmosphere, land surface, ocean and sea ice -- and the choice of variables archived reflects this focus. The Intergovernmental Panel on Climate Change (IPCC) was established by the World Meteorological Organization and the United Nations Environmental Program to assess scientific information on climate change. The IPCC publishes reports that summarize the state of the science. The research based on this dataset provided much of the new material underlying the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4).

Data from the NASA Goddard Institute for Space Studies (NASA/GISS), USA GISS ModelE-H simulations

Data from the Model for Interdisciplinary Research on Climate MIROC3.2 simulations

Data from the Canadian Centre for Climate Modelling & Analysis CGCM3-1-T63 simulations

Data from the National Center for Atmospheric Research (NCAR) Parallel Climate Model (PCM) simulations

Data from the National Centre for Atmospheric Research Community Climate System Model, version 3.0 simulations

Data from the Institute of Atmospheric Physics FGOALS1.0_g simulations

Data from the Centre National de Recherches Meteorologiques CNRM-CM3 simulations

Data from the Institute of Numerical Mathematics INMCM3.0 simulations

Data from the NASA Goddard Institute for Space Studies (NASA/GISS), USA GISS ModelE-R simulations