ESM working group: Meeting notes 2024

Earth System Working Group
, ,
43

Date: 17/07/2025
Chair: @eunpalim
Participants: 10

1. Admin and resource usage

  • Science Presentations: We currently have no upcoming presentations scheduled. Presentations from recent conferences and workshops are welcome, as are updates on in progress work. Members encouraged contact the ESM WG co-chairs or @spencerwong to propose a topic.

  • LG87 Resource Usage:

    • Our allocation for the July-August quarter is 875 KSUs. @wghuneke will use 500KSU to run a PI control simulation with 0.25 degree CM2. Output from theses simulations will be kept on gdata/lg87 for some time and will be available to the community for analysis. This post is open for discussion on which output to save.
    • If you have any experiments you are interested in running with ESM WG resources, follow the proposal guidelines here to apply to use WG compute. Members are encouraged to apply for resources early in the quarter, as there may be opportunities to obtain more resources later in the quarter.
    • Storage usage at 56.44 TB of 100 TB allocation.

2. 2025 ACCESS Community Workshop discussion

  • 7 talks have been assigned to the ESM Working Group. A CMIP7 focussed discussion is still an option for the remaining time. Another option is to hold a half day meeting, and coordinate with the other working groups so that members can attend multiple meetings. The option of a social event in the afternoon was also raised.

3. CMIP7 development update

@tiloz presented on the latest model developments for ESM1.6.

  • The new June spinup simulation includes several minor code changes, including updated diagnostics and technical changes to the phenology implementation. Science changes include updated Wombat parameters, and swapping over to the CMIP7 greenhouse gas and aerosol forcings. This simulation looks quite stable however is still adjusting to the change in solar constant.
  • Ongoing includes updates to the plant functional types. Parameters for new Australia specific plant functional types are being finalised. Investigation into issues with seasonality, water balance, and the interpretation of land use change datasets is also being carried out.
  • On the ocean side, CICE5 gives similar results, and testing is underway for fixes to the Mediterranean salinity issue.
  • New oneAPI compiler is being tested, and initial performance concerns have been alleviated with the latest versions.
  • Additional simulations being run include: a 4xCO2 run, a 1pct CO2 run, an emissions driven control, and an AMIP simulation.

There is interest in getting community help to run additional experiments. If you are interested in running any Fast Track experiments, please add your name to the table here

4. ACCESS NRI Visualisation Project: call for expressions of interest

5. ACCESS NRI Visualisation Project: call for expressions of interest

The ACCESS NRI work plan includes the release of additional Payu based ESM1.5 configurations. A discussion was held on which configurations community members would like to see prioritised. These included the basic set of Deck experiments, including the AMIP configuration. Interest was also raised in an N48 configuration for faster simulations.

Please feel free to correct any mistakes in these notes directly, or message @spencerwong with corrections.

Additional information