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How to turn off the transfer of CO2 from ATM to LND

Besuyi

Besuyi
Member
Dear All, I am running two FHIST_BGC cases to study the impact of LULCC on radiative forcing of GHGs in global, without considering their feedback. This needs GHGs to be sent from the land to the atmosphere, and not from the atmosphere to the land.

The default CCSM_BGC = CO2A, it says "adds prognostic CO2 and diagnostic CO2 at the lowest model level to be sent from the atmosphere to the land...". I set CCSM_BGC = CO2B, in this way, the atmosphere will get CO2 from land emmissions.But this two-way exchange will also affects CO2 of land. How can I set to achieve one-way transmission from the land to the atmosphere?

The second confusion is that FHIST_BGC output files h0 do not have chemical constitution fields (O3,CH4,CO2,BC,SOA...), either in terms of their concentration or emission. I checked the CAM's "master field list" and it seems these fields are not present. Should I use CAM-chem related composet ?
 
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