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How to diagnose the CH4 radiative forcing?

X

XinhaoSuo

Xinhao Suo
Member
Hi!
I am a green hand of CESM , and recently I have been learning how to diagnose the radiative forcing. The guidance includes radiative forcing diagnosis for aerosols, such as modified the user_nl_cam to dignosed the Black carbon radiative forcing:(9. Physics modifications via the namelist — camdoc documentation)
rad_diag_1 =
'A:Q:H2O', 'N:O2:O2', 'N:CO2:CO2', 'N:ozone:O3',
'N:N2O:N2O', 'N:CH4:CH4', 'N:CFC11:CFC11', 'N:CFC12:CFC12',
'M:mam4_mode1_nobc:CSMDATA/atm/cam/physprops/mam4_mode1_rrtmg_aeronetdust_sig1.6_dgnh.48_c140304.nc',
'M:mam4_mode2:CSMDATA/atm/cam/physprops/mam4_mode2_rrtmg_aitkendust_c141106.nc',
'M:mam4_mode3:CSMDATA/atm/cam/physprops/mam4_mode3_rrtmg_aeronetdust_sig1.2_dgnl.40_c150219.nc',
'M:mam4_mode4_nobc:CSMDATA/atm/cam/physprops/mam4_mode4_rrtmg_c130628.nc',
'N:VOLC_MMR1:CSMDATA/atm/cam/physprops/volc_camRRTMG_byradius_sigma1.6_mode1_c170214.nc',
'N:VOLC_MMR2:CSMDATA/atm/cam/physprops/volc_camRRTMG_byradius_sigma1.6_mode2_c170214.nc',
'N:VOLC_MMR3:CSMDATA/atm/cam/physprops/volc_camRRTMG_byradius_sigma1.2_mode3_c170214.nc'

so how to make radiative forcing diagnosis for CH4 or CO2 ?may be just deleted the CH4(CO2)? such as :
rad_diag_1 =
'A:Q:H2O', 'N:O2:O2', 'N:CO2:CO2', 'N:ozone:O3',
'N:N2O:N2O', , 'N:CFC11:CFC11', 'N:CFC12:CFC12',
'M:mam4_mode1:CSMDATA/atm/cam/physprops/mam4_mode1_rrtmg_aeronetdust_sig1.6_dgnh.48_c140304.nc',
'M:mam4_mode2:CSMDATA/atm/cam/physprops/mam4_mode2_rrtmg_aitkendust_c141106.nc',
'M:mam4_mode3:CSMDATA/atm/cam/physprops/mam4_mode3_rrtmg_aeronetdust_sig1.2_dgnl.40_c150219.nc',
'M:mam4_mode4:CSMDATA/atm/cam/physprops/mam4_mode4_rrtmg_c130628.nc',
'N:VOLC_MMR1:CSMDATA/atm/cam/physprops/volc_camRRTMG_byradius_sigma1.6_mode1_c170214.nc',
'N:VOLC_MMR2:CSMDATA/atm/cam/physprops/volc_camRRTMG_byradius_sigma1.6_mode2_c170214.nc',
'N:VOLC_MMR3:CSMDATA/atm/cam/physprops/volc_camRRTMG_byradius_sigma1.2_mode3_c170214.nc'
 
A

andrew

Member
That should be correct. But maybe try making sure you give the model the full path for the aerosol files?
 
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