CanESM is a fully coupled Earth System Model, developed at the Canadian Centre for Climate Modelling and Analysis, Climate Research Division, Environment and Climate Change Canada (ECCC). This respository includes all the source code, utilities and scripts used to compile and run CanESM5 and to do diagnostics on ECCC's High Performance Computers (see disclaimer regarding usage below; excludes 3rd party dependencies such as NetCDF). The CanESM code is made openly available at gitlab.com/cccma/canesm. An internal version of the code is also maintained on the ECCC gitlab server, and includes issue tracking and a wiki. This is only available from within the ECCC/Science networks, and requires a science.gc.ca login (same as for science.gc.ca machines). This CanESM repository is referred to as the super-repo. There are six directories at the top level of the super-repo: CanAM : The Canadian Atmosphere Model source code (also see CanDIAG). This is code strictly used by the model alone. CanDIAG : The AGCM diagnostics code, also including all code which overlaps between diagnostics and CanAM. CanCPL : The "new" coupler, built for CanAM-CanNEMO. CanNEMO : The CCCma configuration of NEMO. CCCma_tools : All scripts and utilities, which effectively make up the "CCCma environment". CONFIG : Example make_jobs and basefiles (this is not a submodule). The first five directories (CanAM, CanDIAG, CanCPL, CanNEMO and CCCma_tools) are git submodules. That means each of these directories is an independent git repository, and is tracked by git in the super-repo. The code in each submodule and the super-repo must be treated as separate repositories. The purpose of the super-repo is to keep track of which versions of the (submodule) code define a consistent and working version of the ESM (or AMIP configuration). Hence, a version of the ESM is completely defined by a commit (SHA1 checksum) or tag of the super-repo. This code is made available on an as-is basis. lt has been tested only on the computing facilities within Environment and Climate Change Canada (ECCC). There is no guarantee that it will run on other platforms or if it does, that it will run correctly. No support of any kind will be made available to help users to run the model on their own system. README documents linked below describe the development process used on ECCC machines.

{"references": ["Swart et al. (2019) The Canadian Earth System Model version 5 (CanESM5.0.3), Geosci. Model Dev., 12, 4823\u20134873, https://doi.org/10.5194/gmd-12-4823-2019, 2019."]}