CAM-Nor: The NorESM version of the Community Atmosphere Model (CAM)

CAM code is stored in this repository on branches other than main. The details are explained below.

Please see the NorESM documentation for complete documentation on NorESM, getting started with git and how to contribute to CAM-Nor's development.

This repository has the following CAM-Nor branches:

• cam_cesm2_1_rel_05-Nor - contains the CAM6-Nor code, based on CESM2.1 CAM code. Contains aerotab and further changes as described by Seland et al. 2020, with tags

  • cam_cesm2_1_rel_05-Nor_v1.0.0 -- CAM6-Nor version (NorESM tag release-noresm2.0.1), 18 March 2020
    • initial preliminary release of CMIP6 version
  • cam_cesm2_1_rel_05-Nor_v1.0.1 -- CAM6-Nor version, not used in a NorESM tag, 11 May 2020
  • cam_cesm2_1_rel_05-Nor_v1.0.2 -- CAM6-Nor version (NorESM tag release-noresm2.0.2), 17 July 2020
    • CMIP6 bit-identical version (if used on fram, and as MM)
  • cam_cesm2_1_rel_05-Nor_v1.0.3 -- CAM6-Nor version (NorESM tag release-noresm2.0.3), 1 April 2021
    • automatic download of AeroTab files for PTAERO compsets
  • cam_cesm2_1_rel_05-Nor_v1.0.4 -- CAM6-Nor version (NorESM tag release-noresm2.0.4), 8 May 2021
    • allow configuration of coupled N2000_CAM6%NORESM compsets
    • fix Fortran logic error in MG microphysics that could sometimes cause the model to crash
  • cam_cesm2_1_rel_05-Nor_v1.0.5 -- CAM6-Nor version (NorESM tags release-noresm2.0.5 and release-noresm2.0.6), 9 December 2022
    • add SSP5-3.4 and emission driven SSP compsets
    • technical (non answer-changing) modifications in CAM-Nor : correction in CCN (ndrop.F90) and COSP (cosp_optics.F90) diagnostics
    • correction in H2O emission file link for f09 for the extended (year 2100-2300) SSP1-2.6 and SSP5-8.5 compsets

• cam_cesm2_1_rel_05-Nor-SpAer - based on cam_cesm2_1_rel_05-Nor

  • about to contain simple plume aerosol model code

• cam_cesm2_1_rel_05-Nor_v1.0.2_keyClim-withoutanthraer - based on cam_cesm2_1_rel_05-Nor (branched off at tag cam_cesm2_1_rel_05-Nor_v1.0.2)

  • related to version used in project KeyClim for simulation without anthropogenic aerosol (only natural aerosol)

• cam-Nor-dev - based on cam_cesm2_1_rel_05-Nor (branched off at tag cam_cesm2_1_rel_05-Nor_v1.0.2)

  • post-CMIP6 development version of CAM6-Nor (including bugfixes, new developments, answer-changes modifications, ...)

• feature-hamocc-vsls - based on cam_cesm2_1_rel_05-Nor (branched off at tag cam_cesm2_1_rel_05-Nor_v1.0.2)

  • related to version developed in project KeyClim for simulation of Very Short Lived Spiecies (VSLS) in ocean and atmosphere.

• noresm_develop - main development branch for future release versions of NorESM

• main - contains this README, basic guidelines, and some special GitHub scripts.

CAM-Nor and NorESM documentation https://noresm-docs.readthedocs.io/en/noresm2/

How to checkout and use CAM:

The instructions below assume you have cloned this repository and are in the repository directory. For example:

git clone https://github.com/NorESMhub/CAM
cd CAM

To run CAM compatible with the NorESM2 release:

git checkout cam_cesm2_1_rel_05-Nor_v1.0.5
./manage_externals/checkout_externals

To view the release branch in github, go to the "Branch:main" pulldown menu and select cam_cesm2_1_rel_05-Nor

To use unsupported CAM development code:

NOTE: This is unsupported development code and is subject to the CESM developer's agreement.

git checkout noresm_v4_cam6_3_112
./manage_externals/checkout_externals

CAM6-Nor Documentation - https://noresm-docs.readthedocs.io/en/noresm2/model-description/atm_model.html

CAM6 namelist settings - https://docs.cesm.ucar.edu/models/cesm2/settings/current/cam_nml.html