CESM1 Scientifically Validated Configurations

New! CESM2 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.


Compset Resolution Simulation Type CESM Version Version Details Notes
FSSOA 1.9x2.5 CAM-chem AMIP Simulations CESM 1.2.z CESM 1.2.z (Currently CESM 1.2.2 - June 2014 and CESM 1.2.2.1 on NCAR machine cheyenne - April 2017) - code base for CAM5/CAM-SE and CLM4.5
  • CESM 1.2.z Experiments, Data and Diagnostics.
  • CESM 1.2.z Release Notes.
  • Complete list of CESM 1.2.z component sets, resolutions and machines.
  • Note: the CAM-chem AMIP simulations used a slightly modified version of the cesm1.2.2 release that included some bug fixes and source modifications. Please see CESM 1.2.z Experiments, Data and Diagnostics. for details on reproducing these simulation configurations.
  • 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 1.0.6
FSTRATMAM3 1.9x2.5 CAM-chem AMIP Simulations CESM 1.2.z CESM 1.2.z (Currently CESM 1.2.2 - June 2014 and CESM 1.2.2.1 on NCAR machine cheyenne - April 2017) - code base for CAM5/CAM-SE and CLM4.5
  • CESM 1.2.z Experiments, Data and Diagnostics.
  • CESM 1.2.z Release Notes.
  • Complete list of CESM 1.2.z component sets, resolutions and machines.
  • Note: the CAM-chem AMIP simulations used a slightly modified version of the cesm1.2.2 release that included some bug fixes and source modifications. Please see CESM 1.2.z Experiments, Data and Diagnostics. for details on reproducing these simulation configurations.
  • 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 1.0.6
FSTRATMAM4 1.9x2.5 CAM-chem AMIP Simulations CESM 1.2.z CESM 1.2.z (Currently CESM 1.2.2 - June 2014 and CESM 1.2.2.1 on NCAR machine cheyenne - April 2017) - code base for CAM5/CAM-SE and CLM4.5
  • CESM 1.2.z Experiments, Data and Diagnostics.
  • CESM 1.2.z Release Notes.
  • Complete list of CESM 1.2.z component sets, resolutions and machines.
  • Note: the CAM-chem AMIP simulations used a slightly modified version of the cesm1.2.2 release that included some bug fixes and source modifications. Please see CESM 1.2.z Experiments, Data and Diagnostics. for details on reproducing these simulation configurations.
  • 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 1.0.6
FSDSSOA 1.9x2.5 CAM-chem AMIP Simulations CESM 1.2.z CESM 1.2.z (Currently CESM 1.2.2 - June 2014 and CESM 1.2.2.1 on NCAR machine cheyenne - April 2017) - code base for CAM5/CAM-SE and CLM4.5
  • CESM 1.2.z Experiments, Data and Diagnostics.
  • CESM 1.2.z Release Notes.
  • Complete list of CESM 1.2.z component sets, resolutions and machines.
  • Note: the CAM-chem AMIP simulations used a slightly modified version of the cesm1.2.2 release that included some bug fixes and source modifications. Please see CESM 1.2.z Experiments, Data and Diagnostics. for details on reproducing these simulation configurations.
  • 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 1.0.6
FSDSMAM 1.9x2.5 CAM-chem AMIP Simulations CESM 1.2.z CESM 1.2.z (Currently CESM 1.2.2 - June 2014 and CESM 1.2.2.1 on NCAR machine cheyenne - April 2017) - code base for CAM5/CAM-SE and CLM4.5
  • CESM 1.2.z Experiments, Data and Diagnostics.
  • CESM 1.2.z Release Notes.
  • Complete list of CESM 1.2.z component sets, resolutions and machines.
  • Note: the CAM-chem AMIP simulations used a slightly modified version of the cesm1.2.2 release that included some bug fixes and source modifications. Please see CESM 1.2.z Experiments, Data and Diagnostics. for details on reproducing these simulation configurations.
  • 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 1.0.6
B_1850_CAM5_CN 0.9x1.25_gx1v6 Control Simulations CESM 1.1.z CESM 1.1.z (Currently CESM 1.1.2 - July 2013) - code base for infrastructure (multi-instance, new river component) and CAM5/FV
  • 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.
  • A special CESM version with limited support based on the CESM1.1.1 code release was created specifically for the Large Ensemble Community Project and Last Millennium Ensemble Project. Please refer to the Large Ensemble Community Project and Last Millennium Ensemble Project pages for details about the scientifically validated model configurations, diagnostic output, and support for the model release code base.
  • ** 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.
B_1850_CAM5_CN 1.9x2.5_gx1v6 Control Simulations CESM 1.1.z CESM 1.1.z (Currently CESM 1.1.2 - July 2013) - code base for infrastructure (multi-instance, new river component) and CAM5/FV
  • 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.
  • A special CESM version with limited support based on the CESM1.1.1 code release was created specifically for the Large Ensemble Community Project and Last Millennium Ensemble Project. Please refer to the Large Ensemble Community Project and Last Millennium Ensemble Project pages for details about the scientifically validated model configurations, diagnostic output, and support for the model release code base.
  • ** 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.
B_1850_WACCM_CN 1.9x2.5_gx1v6 Control Simulations CESM 1.1.z CESM 1.1.z (Currently CESM 1.1.2 - July 2013) - code base for infrastructure (multi-instance, new river component) and CAM5/FV
  • 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.
  • A special CESM version with limited support based on the CESM1.1.1 code release was created specifically for the Large Ensemble Community Project and Last Millennium Ensemble Project. Please refer to the Large Ensemble Community Project and Last Millennium Ensemble Project pages for details about the scientifically validated model configurations, diagnostic output, and support for the model release code base.
  • ** 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.
B_1955-2005_WACCM_CN 1.9x2.5_gx1v6 Transient Simulations CESM 1.1.z CESM 1.1.z (Currently CESM 1.1.2 - July 2013) - code base for infrastructure (multi-instance, new river component) and CAM5/FV
  • 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.
  • A special CESM version with limited support based on the CESM1.1.1 code release was created specifically for the Large Ensemble Community Project and Last Millennium Ensemble Project. Please refer to the Large Ensemble Community Project and Last Millennium Ensemble Project pages for details about the scientifically validated model configurations, diagnostic output, and support for the model release code base.
  • ** 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.
B_1850-2000_CAM5_CN 0.9x1.25_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850_CN 0.9x1.25_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850_RAMPCO2_CN 0.9x1.25_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850-2000_CN 0.9x1.25_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850_BGC-BPRP 0.9x1.25_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850_BGC-BDRD 0.9x1.25_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850_CN_CHEM 0.9x1.25_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850-2000_CN_CHEM 0.9x1.25_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850_CN 1.9x2.5_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850_RAMPCO2_CN 1.9x2.5_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850-2000_CN 1.9x2.5_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850-2005_WACCM_CN 1.9x2.5_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_RCP2.6_WACCM_CN 1.9x2.5_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_RCP4.5_WACCM_CN 1.9x2.5_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_RCP8.5_WACCM_CN 1.9x2.5_gx1v6 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850_CN T31_gx3v7 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
B_1850-2000_CN T31_gx3v7 "fully-coupled" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
F_AMIP_CAM5 0.9x1.25_0.9x1.25 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
F_AMIP_CN 0.9x1.25_0.9x1.25 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
I_2000 0.9x1.25_gx1v6 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
I_2000_CN 0.9x1.25_gx1v6 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
F_AMIP_CN 1.9x2.5_1.9x2.5 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
F_AMIP_CAM5 1.9x2.5_1.9x2.5 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
F_2000_WACCM 1.9x2.5_1.9x2.5 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
F_2000_WACCMX 1.9x2.5_1.9x2.5 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
C_NORMAL_YEAR T62_gx1v6 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
G_INTERANNUAL T62_gx1v6 "stand-alone" component configurations CESM 1.0.z CESM 1.0.z (Currently CESM 1.0.6 - May 2014) - code base for CMIP5/AR5 simulations
Compset Resolution Simulation Type CESM Version Version Details Notes