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Global ocean-sea ice coupled model configurations.

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ACCESS-OM2 global ocean - sea ice coupled model configurations.



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ACCESS-OM2 is a global coupled ocean - sea ice model being developed by [COSIMA](

ACCESS-OM2 consists of the [MOM 5.1]( ocean model, [CICE 5.1.2]( sea ice model, and a file-based atmosphere called [YATM]( coupled together using [OASIS3-MCT v2.0]( ACCESS-OM2 builds on the ACCESS-OM ([Bi et al., 2013]( and AusCOM ([Roberts et al., 2007](; [Bi and Marsland, 2010]( models originally developed at [CSIRO](

ACCESS-OM2 comes with a number of standard configurations in the [control]( directory. These include sea ice and ocean at a nominal 1.0, 0.25 and 0.1 degree horizontal grid spacing, forced by [JRA55-do]( atmospheric reanalyses.

ACCESS-OM2 is being used for a growing number of research projects. A partial list of publications using the model is given [here](

# Downloading

This respository contains many submodules, so you will need to clone it with the `--recursive` flag:
git clone --recursive

To update a previous clone of this repository to the latest version, you will need to do
git pull
followed by
git submodule update --init --recursive
to update all the submodules.

# Where to find information

The v1.0 model code, configurations and performance were described in [Kiss et al. (2020)](, with further details in the draft [ACCESS-OM2 technical report]( The current code and configurations differ from v1.0 in a number of ways (biogeochemistry, updated forcing, improvements and bug fixes), as described by [Solodoch et al. (2022)](, [Hayashida et al. (2023)](, [Menviel et al. (2023)]( and [Wang et al. (2023)](

Model output can be accessed by [NCI]( users via the [COSIMA Cookbook](

For information on downloading, building and running the model, see the [ACCESS-OM2 wiki](

**NOTE:** All ACCESS-OM2 model components and configurations are undergoing continual improvement. We strongly recommend that you "watch" this repo (see button at top of screen; ask to be notified of all conversations) and also watch all the [component models](, whichever [configuration(s)]( you are using, and [`payu`]( to be kept informed of updates, problems and bug fixes as they arise.

Requests for help and other issues associated with the model, tools or configurations can be registered as [ACCESS-OM2 issues](

## Conditions of use

We request that users of this or other ACCESS-OM2 model code:
1. consider citing Kiss et al. (2020) ([](, and also the other [papers above]( detailing more recent improvements to the model
2. include an acknowledgement such as the following:

*The authors thank the Consortium for Ocean-Sea Ice Modelling in Australia (COSIMA; []( for making the ACCESS-OM2 suite of models available at [](*
3. let us know of any publications which use these models or data so we can add them to [our list](

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Last synced: 24 days ago

Total Commits: 409
Total Committers: 15
Avg Commits per committer: 27.267
Development Distribution Score (DDS): 0.711

Commits in past year: 3
Committers in past year: 2
Avg Commits per committer in past year: 1.5
Development Distribution Score (DDS) in past year: 0.333

Name Email Commits
Nic Hannah n****c@d****u 118
Andrew Kiss 3****s 104
Nicholas Hannah n****h@g****m 88
Nic Hannah n****h@p****e 52
Aidan Heerdegen a****n@a****u 23
a-parkinson 3****n 5
Andrew Kiss a****6@g****u 4
Nicholas Hannah n****h@n****u 4
Marshall Ward m****d@g****m 3
Anthony Parkinson a****y@d****u 3
Ryan Holmes h****m@g****m 1
Nicholas Hannah n****h 1
Nic Hannah n****n 1
Andy Hogg A****g@a****u 1
Navid C. Constantinou n****y 1

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Last synced: 1 day ago

Total issues: 92
Total pull requests: 12
Average time to close issues: 7 months
Average time to close pull requests: 7 months
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Total pull request authors: 4
Average comments per issue: 12.92
Average comments per pull request: 1.5
Merged pull request: 9
Bot issues: 0
Bot pull requests: 0

Past year issues: 7
Past year pull requests: 1
Past year average time to close issues: 24 days
Past year average time to close pull requests: 25 minutes
Past year issue authors: 3
Past year pull request authors: 1
Past year average comments per issue: 4.71
Past year average comments per pull request: 1.0
Past year merged pull request: 1
Past year bot issues: 0
Past year bot pull requests: 0

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  • aekiss (45)
  • nichannah (9)
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Top Pull Request Authors

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  • navidcy (1)

Top Issue Labels

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  • enhancement (3)

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test/requirements_test.txt pypi
  • GitPython * test
  • f90nml * test
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  • pylint * test
  • pytest * test
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  • scipy * test
.github/workflows/CI.yml actions
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Score: 7.380879035564115