Hi @spencerwong Could you please confirm whether this suite is using fixed GHG concentrations or time-varying values? The namelist file specifies a constant CO2_MMR value, but I just want to make sure this isn’t being overridden by any time-varying settings elsewhere in the suite.
Hi @abhik, fyi, @spencerwong is on leave at the moment.
Hi @cbull and @spencerwong , My understanding is that when L_CLMCHFCG = .TRUE., the suite reads the 165-year time-varying GHG concentrations from CLIM_FCG_LEVLS(:,1:11), where index 1 corresponds to CO2. If L_CLMCHFCG is set to .FALSE., then the model instead uses the fixed GHG concentrations specified in the earlier part of the namelist.
Hi @abhik, that’s exactly correct. An example of this is the preindustrial configuration, where L_CLMCHFCG=.FALSE., and the constant greenhouse gas concentrations are read from the &RUN_RADIATON namelist.
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