ACCESS-ESM1.5 in pacemaker mode

Earth System Earth System Model
, ,
9

Hi @georgyfalster, I’ll add a brief summary about the setup now that these experiments are complete.

The pacemaker experiments described here have now been successfully run by adapting the setup from @ariaan. There were a few steps in getting the setup correct, and the most difficult part was creating a temperature restoring file, temp_sfc_restore.nc, which MOM5 wouldn’t complain about. There were few important points noticed through trial and error:

  • It’s possible to run a long (e.g. 500 year simulation) using a single continuous temp_sfc_restore.nc restoring file. In this case, it was important to remove the modulo attribute from the time dimension and pad data at the start of the very first month and end of the very last month so that the time interpolation worked properly.
  • When processing the restore file with xarray, it was easy to inadvertently lose attributes needed by MOM5. In particular, the model required the following:
    • time needs to be a record dimension
    • The temp variable should have the dimension order TIME, DEPTH1_1, GRID_Y_T, GRID_X_T
    • The following coordinate attributes appeared to be necessary for the model to work out which axis is which: DEPTH1_1:units = "m" ,GRID_Y_T:units = "degrees_north" , and GRID_X_T:units = "degrees_east"

@georgyfalster has uploaded payu configurations for the experiments here

Feel free to add any other notes or information!

1 Like