CSIRO and ACCESS-NRI have developed, configured and ran the ESM1.6 spin-up experiments for the upcoming cmip7 contribution.
This thread is intended to document the exact model executables and forcings used for the esm1.6 spin-up experiments (previous example). In particular, changes to the executables, bug corrections and updates can also be documented here.
At restart 352, we replaced the ALK, DIC, NO3 and O2 tracers with their values from depth indices 15:50 with those from the restart file located here: /g/data/vk83/prerelease/configurations/inputs/access-esm1p6/modern/pre-industrial/restart/2024.12.10/ocean
At restart 653, we replaced the Fe (iron) tracer with values from depth indices 15:50 with those of the restart file in: /g/data/vk83/prerelease/configurations/inputs/access-esm1p6/modern/pre-industrial/restart/2024.12.10/ocean
At restart 666, we increased the scavenging of iron onto particles by an order of magnitude from kscav_dfe = 0.0001 to kscav_dfe = 0.001. This was done in the hope that excess Fe building in the ocean interior will be removed.
At restart 678, we increased the remineralisation rate coefficient (detlrem) from 0.4 to 0.5 (by 25%) to maintain more organics in the upper ocean, elevate productivity, but also reduce deoxygenation in the deep. This may not be enough, but just trying it right now.
For further run details, the payu experiment configuration folder with associated run commits is here. See important_run_details.txt for further details.