Hi all, As promised, I’ve tried to compile some relevant details for ocean and ice model development in ACCESS-ESM1.6. I’m sure things will be missing or unclear so please send questions to Anton or Aidan (particularly for Spack questions). Please also feel free to contact me, though I’ll be on le…

Hi all, Following today’s discussion in the CMIP7 meeting, I thought I’d just copy over the current evaluation plots for the Sept A & B runs from the NESP sharepoint (mean state maps, ENSO/IOD properties and teleconnections). There are some plots from the JuneSpinUp run further below as well. I wil…

An update on the test spin up runs as of 20/10/2025 - note that the 3 September spin up runs have transitioned to “October Spin ups” (including a bug fix to terrestrial carbon cycle). The 3 test spinup branched off from different years of the previous long (blue) April-June spin up (purple: test A …

Minutes from today’s stand up . Feel free to correct/amend. @sofarrell there was a link you were going to add I believe?

Minor update as of 24/10/2025 - there is an indication that the Oct-B run has recently gone through a period of faster cooling. This could be worth assessing in more detail. [Octtest_spinup_ocean_temperature_3] [Octtest_spinup_ocean_salinity_3] [Octtest_spinup_SST_3] [Octtest_spinup_SSS_3]

As discussed at the standup and break out meetings. Myself, @clairecarouge , @RachelLaw and @anton have come up with a starting skeleton/structure for the ESM1.6 configuration documentation. The temporary url is: Home - ACCESS-ESM1.6-Configs Details of how to edit/contribute are here: Howto: add/…

updated ocean time series plots for the 3 current test simulations. [Octtest_spinup_ocean_temperature_5] [Octtest_spinup_ocean_salinity_5] [Octtest_spinup_SST_5] [Octtest_spinup_SSS_5]

A small number of global time series from the atmosphere - blue is the previous long spin up (Dec-April-June-August, concatenated), orange is test-B (Sept and Oct phases). [Octtest_spinup_tas_5] [Octtest_spinup_precip_5] Top of atmosphere energy balance - noting that we suspect the “steady-stat…

and finally, global metrics for the main land carbon fluxes - note that around year 1280 (dotted line) a bug fix was introduced to the test-B spin up. [Octtest_spinup_NBP_5] [Octtest_spinup_GPP_5] [Octtest_spinup_NPP_5] [Octtest_spinup_R_soil_5]

We might have been worrying too much about the deep ocean and not enough about 1000 m. This is a comparison of the last 100 years of Oct-B, 0101-0200 of the ESM1.5 piControl and World Ocean Atlas. Overall I don’t think 1.6 is worse than 1.5 (though not a very high hurdle in this case) [layer_diffs…

ACCESS-ESM1.6 development

CMIP7 CMIP7 development

cbull (Chris Bull) 27 October 2025 23:27 270

Today’s stand up minutes, please correct / amend.

Topic		Replies	Views
CSIRO - ACCESS-NRI standup minutes CMIP7 development	93	2740	10 June 2026
ESM1.6 Spin-up experiments CMIP7 development data , control , esm , access-esm	0	728	25 February 2025
ACCESS-ESM1.5: ACCESS-NRI flagship release plans Earth System Model access-nri , access-esm	17	500	1 July 2024
ACCESS-ESM1.5: Release Information ACCESS-NRI Releases release , model , access-esm15	3	487	9 April 2025
ACCESS-ESM1.6 scope and use for CMIP7 Fast Track CMIP7 Models	18	598	19 July 2024

ACCESS-ESM1.6 development

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