Introduction
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.
| Name: | pi_concentrations |
| Years: | 0-222 |
| GitHub repo: | GitHub - ACCESS-NRI/access-esm1.6-configs: Standard ACCESS-ESM1.6 configurations released and supported by ACCESS-NRI |
| Exe versions: | access-esm1p6/pr27-5 |
| Inputs: | /g/data/vk83/configurations/inputs/access-esm1p5/ … /g/data/vk83/prerelease/configurations/inputs/access-esm1p6/ … |
| Outputs: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Restarts: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Brief description: | Spin-up run with the 1 degree ACCESS-ESM-1.6 with 650 years continuous run (as of writing) |
| Simulation started: | 20th December 2024 (all run on Gadi) |
| People: | Pearse Buchanan (@pearseb), ? |
| Linked articles: |
| Years: | 222 - 272 |
| Exe versions: | access-esm1p6/pr31-1 |
| Outputs: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Restarts: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Brief description: | WOMBAT-lite code updated with sinking bugfix. Updated to dev_2025.01.0 |
| Other notes: | |
| People: | Pearse Buchanan (@pearseb), ? |
| Years: | 272 - 352 |
| Exe versions: | access-esm1p6/pr31-3 |
| Outputs: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Restarts: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Brief description: | Updated WOMBAT-lite to dev_2025.01.2 - details? |
| Other notes: | |
| People: | Pearse Buchanan (@pearseb), ? |
| Years: | 352 - 653 |
| Exe versions: | access-esm1p6/pr31-3 |
| Outputs: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Restarts: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Brief description: | 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 |
| Other notes: | |
| People: | Pearse Buchanan (@pearseb), ? |
| Years: | 653 - 666 |
| Exe versions: | access-esm1p6/pr31-3 |
| Outputs: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Restarts: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Brief description: | 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 |
| Other notes: | |
| People: | Pearse Buchanan (@pearseb), ? |
| Years: | 666 - 678 |
| Exe versions: | access-esm1p6/pr31-3 |
| Outputs: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Restarts: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Brief description: | 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. |
| Other notes: | |
| People: | Pearse Buchanan (@pearseb), ? |
| Years: | 678 - 840 |
| Exe versions: | access-esm1p6/pr31-3 |
| Outputs: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Restarts: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations-expt-c55f7217 |
| Brief description: | 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. |
| Other notes: | |
| People: | Pearse Buchanan (@pearseb), ? |
| Years: | 840 - 902 |
| Exe versions: | access-esm1p6/pr31-3 |
| Outputs: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations_test3-restart-840-35bbe5a7 |
| Restarts: | /scratch/p66/pjb581/access-esm/archive/pi_concentrations_test3-restart-840-35bbe5a7 |
| Brief description: | At restart 840, we altered the parameters for the BGC model (WOMBAT-lite). We turned off burial of tracers and updated the parameter set. The parameters that were updated and their new values: - burial = .false.- conservetracers = .false.- bbioh = 1.060- phykf = 1.0- phylmor = 1.69e-7- zooassi = 0.30- zooepsmin = 2.e-8- zooepsmax = 2.5e-6- zoolmor = 3.1e-7- zooqmor = 9.25e-6- wdetbio = 2.32e-4- wcaco3 = 1.5e-4- ligand = 0.4- kscav_dfe = 0.005compared to their previous values of: - burial = .true.- conservetracers = .true.- bbioh = 1.064- phykf = 1.1- phylmor = 1.562e-7- zooassi = 0.25- zooepsmin = 6.e-8- zooepsmax = 7.0e-7- zoolmor = 3.3e-7- zooqmor = 9.5e-6- wdetbio = 3.1e-4- wcaco3 = 1.6e-4- ligand = 0.5- kscav_dfe = 0.001 |
| Other notes: | |
| People: | Pearse Buchanan (@pearseb), ? |
For further run details, the payu experiment configuration folder with associated run commits is here. See important_run_details.txt for further details.
| Years: | 0 - 235 |
| Exe versions: | access-esm1p6/dev_2025.04.000 |
| Outputs: | /scratch/p66/jxs599/access-esm/archive/AprilSpinUp-AprilSpinUp-56aae814 |
| Restarts: | /scratch/p66/jxs599/access-esm/archive/AprilSpinUp-AprilSpinUp-56aae814 |
| Brief description: | Using restart from Pearse’s long run at year 902, April spin-up conducted by Jhan, we reset the deep ocean concentrations of Alk, DIC, NO3, O2, and Fe tracers. Specifically, these were from depth levels 15:50, and they were reset to their original fields in /g/data/vk83/prerelease/configurations/inputs/access-esm1p6/modern/pre-industrial/restart/2024.12.10/ocean/ocean_wombatlite.res.nc |
| Other notes: | Relative to UM executable used in Pearse’s run, our UM executable includes many modifications between Dec 5 th and April 1st. Notably also is LUH3 based land cover map and CMIP7 revised solar constant |
| People: | Ian Harman (@har917), Tilo Ziehn (@tiloz), Rachel Law (@rml599gh), Jhan (@JhanSrbinovsky) |
| Years: | 236 - 805 |
| Exe versions: | access-esm1p6/dev_2025.04.000 |
| Outputs: | /scratch/p66/jxs599/access-esm/archive/AprilSpinUp-AprilSpinUp-56aae814 |
| Restarts: | /scratch/p66/jxs599/access-esm/archive/AprilSpinUp-AprilSpinUp-56aae814 |
| Brief description: | Following above run: altered the parameters for the BGC model (WOMBAT-lite). We turned off burial of tracers and updated the parameter set. Parameters updated to new values in ocean_field table to match Pearse’s long run (above) |
| Other notes: | Relative to UM executable used in Pearse’s run, our UM executable includes many modifications between Dec 5 th and April 1st. Notably also is LUH3 based land cover map and CMIP7 revised solar constant |
| People: | Ian Harman (@har917), Tilo Ziehn (@tiloz), Rachel Law (@rml599gh), Jhan (@JhanSrbinovsky) |
| Years: | 805-present (=1059 @June10th) |
| Exe versions: | access-esm1p6/dev_2025.04.000 |
| Outputs: | /scratch/p66/jxs599/access-esm/archive/AprilSpinUp-AprilSpinUp-56aae814 |
| Restarts: | /scratch/p66/jxs599/access-esm/archive/AprilSpinUp-AprilSpinUp-56aae814 |
| Brief description: | Following above run and altered parameters in ocean_field table modified to include dissdet=0.2. Further update (at year ~940) to correct having too much alkalinity in the deep ocean (disscal=0.15) |
| People: | Ian Harman (@har917), Tilo Ziehn (@tiloz), Rachel Law (@rml599gh), Jhan (@JhanSrbinovsky), Pearse Buchanan (@pearseb) |
JuneSpinUp
| Years: | 1092-present (=13 @June13th) |
| Exe versions: | access-esm1p6/dev_2025.06.000 |
| Outputs: | /scratch/p66/jxs599/access-esm/archive/JuneSpinUp-JuneSpinUp-bfaa9c5b/ |
| Restarts: | /g/data/vk83/prerelease/configurations/inputs/access-esm1p6/modern/pre-industrial/restart/2025.06.12 |
| Brief description: | The JuneSpinUp consolidates all of the ad-hoc changes brought into AprilSpinUp format least 100 years. These are mainly updates to the ocean and WOMBAT parameters. The executable is update to correspond with reading an updated phenology file for CASA-CNP. Note: JuneSpinUp has been started from restarts corresponding to year 1092 of the AprilSpinUp. Note however that the directory names will start from “000” again, i.e. output000 |
Further Notes: To clone this simulation fully intact use payu clone https://github.com/ACCESS-NRI/access-esm1.6-configs -s 20250612-spinup-dev-preindustrial+concentrations -b <new-branch-name> <new-directory-name> |
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| People: | Ian Harman (@har917), Tilo Ziehn (@tiloz), Rachel Law (@rml599gh), Jhan (@JhanSrbinovsky), Pearse Buchanan (@pearseb) Spencer Wong (@blimlim) |