This PR updates the initial GHG concentrations in RRTMG SW+LW to more recent values. In addition, the user can specifiy the values by setting co2_content, n2o_content, and ch4_content to the desired values in the physics section of namelist.atmosphere.
New default values are 410 ppmv for CO2, 330 ppbv for N2O, and 1850 ppbv for CH4.
This PR updates the initial GHG concentrations in RRTMG SW+LW to more recent values. In addition, the user can specifiy the values by setting co2_content, n2o_content, and ch4_content to the desired values in the physics section of namelist.atmosphere. New default values are 410 ppmv for CO2, 330 ppbv for N2O, and 1850 ppbv for CH4.