run with fixed SST and sea ice, active CAM

[littledddna@gmail_com]

Dear all,

I am using iCESM to perform a fixed SST and sea ice run with active atmosphere and land.
I think this is similar to F (or AMIP) run except that AMIP run has updated observed SST. Following the instruction of CESM1.2 userguide, it seems that I need to add time and datesec to the SST_ICE file. So, my questions are,
1. since I only need a fixed SST and sea ice, do I need consider these time variables in the input file? Should I set time to 1 in the file?
2. The new generated SST and ICE file should be in the CAM grid, right ? Not the 2D POP grid.

Thanks very much and best regards,

Xiao

 

[dbailey]

When you set up your F compset, you should see a variable SSTICE_DATA_FILENAME in env_run.xml. You can have a look at:

$DIN_LOC_ROOT/atm/cam/sst/sst_HadOIBl_bc_0.9x1.25_1850_2017_c180507.nc

as an example. This is on the CAM FV 1-degree grid. Ultimately, if you are doing an FHIST or historical run, then you would expect *real* years in the dataset. If you are just doing a repeat climatological year then the dates would simply be 0001-01 to 0001-12. Or some arbitrary year. When you specifiy the grid for an F compset it will be f09_f09. You can always do:

./create_newcase --list grids

 

[littledddna@gmail_com]

When you set up your F compset, you should see a variable SSTICE_DATA_FILENAME in env_run.xml. You can have a look at:

$DIN_LOC_ROOT/atm/cam/sst/sst_HadOIBl_bc_0.9x1.25_1850_2017_c180507.nc

as an example. This is on the CAM FV 1-degree grid. Ultimately, if you are doing an FHIST or historical run, then you would expect *real* years in the dataset. If you are just doing a repeat climatological year then the dates would simply be 0001-01 to 0001-12. Or some arbitrary year. When you specifiy the grid for an F compset it will be f09_f09. You can always do:

./create_newcase --list grids

Thanks very much for the reply, David. As far as I understand, repeat climatological year simulation can only performed use f09_f09 grid. Is that correct ?
I have T31 and gx3v5 for my old run which i would like to continue with fixed repeat climatological year SST.

 

[littledddna@gmail_com]

I see there are T31 file there. I will try again :)