simon_tett@ed_ac_uk
New Member
What version of the code are you using?
release-cesm2.1.5
Running on UK Archer2 super-computer
Describe your problem or question:
I am trying to get instantaneous values of DIC and DOC out of the CESM2 POP model, so I can compute Carbon budgets. I have modified ocn.ecosys.tavg.csh to that the original daily (high frequency) diagnostics are monthly averages and the monthly averages (medium frequency) diagnostics are annual averages. After looking at various bits of documentation, I decided to do this via creating my own ecosys_diagnostics file in SourceMods/src.pop. (I also tried turning on the history snapshots and adding DIC and DOC to the snapshot diagnostics but that failed presumably because those variables are not in the standard snapshot code). I modified "DIC : medium_average" to "DIC : medium_average, high_instantaneous" which should give, in my monthly files, instantaneous values of DIC but when I run I get an error fairly early in the run. The error is:
Requested DIC_2
------------------------------------------------------------------------
POP aborting...
FATAL ERROR: requested field unknown
I've tried changing high_instantaneous to high_average and get the same error.
So -- how do I get instantaneous values of ecosystem variables out of CESM?
Simon
p.s Documentation on getting diagnostics out of POP is very hard work to understand and use. Hopefully, MOM6 as a model will be better documented.
release-cesm2.1.5
Running on UK Archer2 super-computer
Describe your problem or question:
I am trying to get instantaneous values of DIC and DOC out of the CESM2 POP model, so I can compute Carbon budgets. I have modified ocn.ecosys.tavg.csh to that the original daily (high frequency) diagnostics are monthly averages and the monthly averages (medium frequency) diagnostics are annual averages. After looking at various bits of documentation, I decided to do this via creating my own ecosys_diagnostics file in SourceMods/src.pop. (I also tried turning on the history snapshots and adding DIC and DOC to the snapshot diagnostics but that failed presumably because those variables are not in the standard snapshot code). I modified "DIC : medium_average" to "DIC : medium_average, high_instantaneous" which should give, in my monthly files, instantaneous values of DIC but when I run I get an error fairly early in the run. The error is:
Requested DIC_2
------------------------------------------------------------------------
POP aborting...
FATAL ERROR: requested field unknown
I've tried changing high_instantaneous to high_average and get the same error.
So -- how do I get instantaneous values of ecosystem variables out of CESM?
Simon
p.s Documentation on getting diagnostics out of POP is very hard work to understand and use. Hopefully, MOM6 as a model will be better documented.