IPCC 4th Assessment Model Output Database.

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. At the request of the JSC / CLIVAR
Working Group on Coupled Modeling (WGCM), the PCMDI is archiving coupled
ocean-atmosphere general circulation model output to support the Working Group
1 component of the IPCC's 4th Assessment Report. The data archived by the PCMDI
from each participating coupled ocean-atmosphere model is a subset of that
model's output. Working Group 1 of the IPCC focuses on the physical climate
system -- atmosphere, land surface, ocean and sea ice -- and the choice of
variables archived at the PCMDI reflects this focus.

This is the portal for the IPCC 4th Assessment Model Output database, recently renamed WCRP CMIP3 multi-model database (World Climate Research Programme, Coupled Model Intercomparison Project): https://esg.llnl.gov:8443/index.jsp.

The Earth System Grid (ESG) integrates supercomputers with large-scale data and
analysis servers located at numerous national labs and research centers to
create a powerful environment for next generation climate research. This portal
is the primary point of entry into the ESG.
This database consists of model output data generated for the
Intergovernmental Panel on Climate Change (IPCC) 4th Assessment.
The data output from the following models are available:
BCC-CM1, China
BCCR-BCM2.0, Norway
CCSM3, USA
CGCM3,1 (T47), Canada
CGCM3,1 (T63), Canada
CNRM-CM3, France
CSIRO-Mk3.0, Australia
ECHAM5/MPI-OM, Germany
ECHO-G, Germany/Korea
FGOALS-g1.0, China
GFDL-CM2.0, USA
GFDL-CM2.1, USA
GISS-AOM, USA
GISS-EH, USA
GISS-ER, USA
INM-CM3.0, Russia
IPSL-CM4, France
MIROC3.2(hires), Japan
MIROC3.2(medres), Japan
MRI-CGCM2.3.2, Japan
PCM, USA
UKMO-HadCM3, UK
UKMO-HadGEM1, UK

The following scenarios are available:
1%/year CO2 increase (to doubling), 1pctto2x
1%/year CO2 increase (to quadrupling), 1pctto4x
2xCO2 equilibrium, 2xco2
550 ppm stabilization (SRES B1), sresb1
720 ppm stabilization (SRES A1B), sresa1b
AMIP, amip
SRES A2, sresa2
Climate of the 20th Century, 20c3m
Committed climate change, commit
Pre-industrial control, picntrl
Present-day control, pdcntrl
Slab ocean control, slabcntl

All of the data are available online (registration is required to download the
data), through ftp, and through OPeNDAP.

The GFDL model data are also available from:
http://nomads.gfdl.noaa.gov/

The NCAR CCSM and PCM model data are also available from:
http://www.earthsystemgrid.org/