Models

CESM Scientifically Validated Configurations

Scientific validation of the CESM consists of a multi-decadal model run of the given component set at the target resolution, followed by scientific review of the model output diagnostics. All scientifically supported component sets are also accompanied by diagnostic and model output data.

You should use the most recent version of the model that is available unless you are trying to replicate previous results or create a branch run from a previous experiment.

Component sets and resolutions are backward compatible with all CESM releases. However, newer releases of the CESM allow for additional compsets, resolutions and machines.

The DiscussCESM Forums bulletin board can also provide specific recommendations from the CESM community regarding which release of the model to use for your specific requirements.

CESM 1.2.z (Currently CESM 1.2.1 - December 2013) - code base for CAM5/CAM-SE and CLM4.5
Scientifically Validated
Resolution / Compset
Notes
Scientifically validated compset / resolution combinations will be added to this list as they become available.
  • CESM 1.2.z Release Notes.
  • Complete list of CESM 1.2.z component sets, resolutions and machines.
  • Note: The B_1850_BGC_BDRD, B_1850_BGC_BPRP, B_1850-2000_BGC-BDRD and B_1850-2000_BGC-BPRP compsets must be run from cold start conditions in CESM 1.2.z. If you need to start from a spun-up initial condition, please use CESM 1.0.5

CESM 1.1.z (Currently CESM 1.1.2 - July 2013) - code base for infrastructure (multi-instance, new river component) and CAM5/FV
Scientifically Validated
Resolution / Compset
Notes
Control Simulations
0.9x1.25_gx1v6 B_1850_CAM5_CN
1.9x2.5_gx1v6 B_1850_CAM5_CN
B_1850_WACCM_CN
Transient Simulations
1.9x2.5_gx1v6 B_1955-2005_WACCM_CN
  • CESM 1.1.z Experiments, Data and Diagnostics.
  • CESM 1.1.z Release Notes.
  • Complete list of CESM 1.1.z component sets, resolutions and machines.
  • ** Important ** CESM1.1.0 contains NO scientifically validated component sets and as such is not to be used for scientific simulations. The purpose of this release was to make available to the CESM user community model functionality and infrastructure improvements. It has been used as a code base for new model developments that require this new infrastructure. The scientifically validated simulations listed were completed using CESM1.1.1.

CESM 1.0.z (Currently CESM 1.0.5 - February 2013) - code base for CMIP5/AR5 simulations
Scientifically Validated
Resolution / Compset
Notes
"fully-coupled" component configurations
0.9x1.25_gx1v6 B_1850_CAM5_CN *
B_1850-2000_CAM5_CN
B_1850_CN
B_1850_RAMPCO2_CN
B_1850-2000_CN
B_1850_BGC-BPRP
B_1850_BGC-BDRD
B_1850-2000_BGC-BPRP
B_1850-2000_BGC-BDRD
B_1850_CN_CHEM
B_1850-2000_CN_CHEM
1.9x2.5_gx1v6 B_1850_CN
B_1850_RAMPCO2_CN
B_1850-2000_CN
B_1850_CAM5_CN *
B_1850_WACCM_CN *
B_1850-2005_WACCM_CN
B_1955-2005_WACCM_CN *
B_RCP2.6_WACCM_CN
B_RCP4.5_WACCM_CN
B_RCP8.5_WACCM_CN
T31_gx3v7 B_1850_CN
B_1850-2000_CN
"stand-alone" component configurations
0.9x1.25_0.9x1.25 F_AMIP_CAM5
F_AMIP_CN
0.9x1.25_gx1v6 I_2000
I_2000_CN
1.9x2.5_1.9x2.5 F_AMIP_CN
F_AMIP_CAM5
F_2000_WACCM
F_2000_WACCMX
T62_gx1v6 C_NORMAL_YEAR
G_INTERANNUAL
* Use CESM 1.1.z for these compset / resolution pairs.