Fixed greenhouse gases

[wang JD]

Hello ,

I would like to ask whether fixed greenhouse gas concentrations can be set in the CESM-WACCM model.

For example:
scenario_ghg='FIXED'
co2vmr=xxx
ch4vmr=xxx
n2ovmr=xxx
f11vmr=0.0
f12vmr=0.0

flbc_type='CYCLICAL'
flbc_cycle_yr=1850
flbc_list=xxx

If not, I need to change the CO2 value now. Where should I modify it?

Best wish！

 

[dbailey]

I have moved this to the CAM forum. Hopefully someone will respond.

 

[hplin]

Thanks for writing. I have moved to the WACCM forum for further help.

Which compset (longname) are you using? For %WCSC (specified-chemistry) I think co2vmr_rad can be set; for other compsets the LBC file might need to be changed instead.

 

[wang JD]

I have moved this to the CAM forum. Hopefully someone will respond.

Thank you!

 

[wang JD]

Thank you!

Hi dbailey,

I've already fixed the CO2 settings, but now there's another issue I want to ask about:
When running the ultra-high concentration CO2 setting mode, atmospheric physical imbalance occurs during the process, and it eventually throws an error.
Do you have any solutions for this?

 

[wang JD]

Thanks for writing. I have moved to the WACCM forum for further help.

Which compset (longname) are you using? For %WCSC (specified-chemistry) I think co2vmr_rad can be set; for other compsets the LBC file might need to be changed instead.

Hi hplin,

I've already fixed the CO2 settings, but now there's another issue I want to ask about:
When running the ultra-high concentration CO2 setting mode, atmospheric physical imbalance occurs during the process, and it eventually throws an error.
Do you have any solutions for this?