compsets that have HFCs?

Hi everyone, I am trying to model HFCs using CESM2.1.5. Wondering if there are any compsets that contain HFCs or HFC-134a-equivalent in its lower boundary condition files? I have found CFC11eq in other compsets (such as FW1850) but no HFCs. I would really appreciate any help on this!

Moving this to the CAM-Chem forum in the hopes they can help you!

Hi Wasfia,

In the FCnudged compset there are these lower boundary conditions:

flbc_list = 'CCL4', 'CF2CLBR', 'CF3BR', 'CFC11, 'CFC113', 'CFC12', 'CH3BR', 'CH3CCL3', 'CH3CL', 'CH4', 'CO2', 'H2',
'HCFC22', 'N2O', 'CFC114', 'CFC115', 'HCFC141B', 'HCFC142B', 'CH2BR2', 'CHBR3', 'H2402', 'OCS', 'SF6'

It looks like there are HCFCs but not HFCs. Are you interested in ozone layer depletion or global warming potential?

Best,
Rebecca

Hi Rebecca,

Thank you so much for your response and for pointing me to this! I am interested in global warming potential. I still haven't found any compsets with HFCs unfortunately or any boundary condition files that contain HFCs in the flbc_list. I am thinking I may need to add it to the list manually along with the concentrations but please let me know if you have any recommendations.

Best,
Wasfia

Hi Wasfia,

There is a LBC file here on glade that includes HFC-134a and several other HFC species:
/glade/u/home/jzhan166/scripts/LBC/clean/LBC_17500116-20221216_CMIP7_0p5degLat_OCSupdate_c250523.nc
This was recently created by Jun Zhang.

Best,
Rebecca