# ESM Working group: Meeting notes 2026 **URL:** \ **Category:** Working Group\ **Tags:** meeting, notes, esm\ **Created:** [3 February 2026 05:26 UTC](https://forum.access-hive.org.au/t/esm-working-group-meeting-notes-2026/5854 "2026-02-03T05:26:04Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![spencerwong](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/spencerwong/32/1894_2.png) [@spencerwong](https://forum.access-hive.org.au/u/spencerwong)\ **Post date:** [15 June 2026 07:23 UTC](https://forum.access-hive.org.au/t/esm-working-group-meeting-notes-2026/5854/6 "2026-06-15T07:23:47Z")
Date: 9/6/2026 Chair: @tiloz Participants: 13 ### **1. Admin and resource usage** - **Science Presentations:** The last couple of meetings have been cancelled due to there being no science presentations. Several spaces are available for presentations at future ESM WG meetings. If you have any work that you would like to share with the community, please get in contact the ESM WG co-chairs @dkhutch, @tiloz, @ShayneM, @ctychung or @spencerwong. Presentations from recent conferences and workshops are welcome, as are informal updates on in progress work. - **LG87 Resource Usage:** ### 2. ESM1.6 and CMIP7 - ACCESS-ESM1.6 production runs for CMIP7 are underway, with focus now shifting from the control and idealised simulations to the historical experiments. An overview of the status of the different experiments is available [here](https://forum.access-hive.org.au/t/status-of-access-esm1-6-experiments/6337). You are welcome to look at the output and get involved with the ongoing discussions and analysis. - [A CMIP7 meeting](https://forum.access-hive.org.au/t/australian-cmip7-analysis-meeting-11am-1pm-friday-29-may-online/6447) on coordinating the analysis and evaluation effort was recently held. A future catch up could be hosted during the WG meetings. [Status of ACCESS-ESM1.6 experiments - CMIP7 / CMIP7 MIPs and other experiments - ACCESS Hive Community Forum](https://forum.access-hive.org.au/t/status-of-access-esm1-6-experiments/6337) ### 3. **[ACCESS Community Workshop on Land and Coupled Modelling](https://forms.cloud.microsoft/pages/responsepage.aspx?id=XHJ941yrJEaa5fBTPkhkN2ZG6vIAVThPsNCAyezPHAVUQjZLMDFIRk5MTlY0M0ZBUjFYVzBDRlhaMS4u&route=shorturl)** - Abstract submissions for the ACCESS Community Workshop on Land and Coupled Modelling close at midnight AEST June 15.\*\* If you would like to submit an abstract for a presentation or poster, please **[submit your abstract here](https://forms.cloud.microsoft/pages/responsepage.aspx?id=XHJ941yrJEaa5fBTPkhkN2ZG6vIAVThPsNCAyezPHAVUQjZLMDFIRk5MTlY0M0ZBUjFYVzBDRlhaMS4u&route=shorturl)**. ### 4. Science presentation: _Missing Antarctic meltwater: Implications for Southern Hemisphere climate projections_ @wghuneke presented on the impact of Antarctic meltwater on the Southern hemisphere in coupled climate models. **Background:** - The Antarctic ice sheet and its interactions with the ocean are not well represented in current climate models. For example, basal meltwater is typically prescribed and lacks variability and feedbacks. - Recent climate model experiments show that there is large uncertainty around the effects of Antarctic meltwater on the climate. - The _SOFIA_ freshwater experiments comprise of 6 idealised meltwater experiments, with the aim of allowing for multimodel analysis. This presentation discusses results from the SOFIA _antwater_ experiments, where 0.1 Sv of freshwater is added around the Antarctic coastline. **Results:** - **Ocean:** The added freshwater consistently causes surface cooling, subsurface warming, and a reduction in Antarctic bottom water formation which varies across the model. The magnitude and pattern of surface cooling also varies across the models, however doesn’t correlate with the magnitude of the changes in deep convection - **Sea ice:** Sea ice area increases in all models, with magnitude and spatial variations depending on the models’ mean states. - **Atmosphere:** Cooling in the troposphere is strongest around Antarctica, however spreads to the northern hemisphere. Strengthened westerlies are seen in the southern hemisphere. - **Tropics:** The meltwater produces a spatial pattern of cooling in the tropics and leads to a northward shift of the ITCZ. **Impact on southern hemisphere land masses** - Compared to the SSP2-4.5 experiments, the antwater experiments largely produce opposite signed responses in temperature and precipitation. The additional meltwater is expected to damp temperature increases over southern hemisphere land masses. nLarge spreads occur within each model, and across the models, emphasising the importance of using multiple models and as large ensembles as possible. - Precipitation responses are generally not significant for the current number of ensemble members, and the models do not agree on the sign of the changes, with the only robust response being drying over Antarctica. - The magnitude of cooling and drying over Antarctica strongly correlate with the change in air temperature over the southern ocean, highlighting potential feedbacks onto melting. Please feel free to correct any mistakes in these notes directly, or message @spencerwong with corrections. ## Additional information - [Guidelines for accessing working group compute resources](https://forum.access-hive.org.au/t/esm-working-group-resource-allocation-guidelines/799) - Share an experiment by starting a new topic in [this sub-category](https://forum.access-hive.org.au/c/esm/experiments/50). - Join the [ESM Group](https://forum.access-hive.org.au/g/ESM) - Subscribe to the ESM Working Group calendar: 1. [ESM Working Group Meeting Calendar feed](https://outlook.office365.com/owa/calendar/463c5a6d0bba4c838dce9c57933398fb@anu.edu.au/3086e7a51b0d48ef85bee981a597274413647516456690471131/calendar.ics)(right click on the link and copy the URL) 2. Use calendar feed URL to [subscribe to the calendar](https://forum.access-hive.org.au/t/how-to-subscribe-to-a-calendar-feed/767) --- _[View the full topic](https://forum.access-hive.org.au/t/esm-working-group-meeting-notes-2026/5854)._