Table 10.

Information about files which CAM6 reads to get data describing external contributions to chemical and aerosol constituents. SERIAL; extract data which has the current model date. CYCLICAL; extract data from the specified year from the file. INTERP_MISSING_MONTHS; extract data from the 2 years in the file, which bound the current model year, and from the current model month of those years. For example, if the curent model date is 2018-06-12 and the file has years 2015 and 2020 in it, then data from 2015-06 and 2020-06 will be used to interpolate to 2018-06. The 6 digits following the _c encode the creation date (YYMMDD). The other 6 digit numbers are year + month combinations.

Namelist variable	Value	[File contents]
srf_emis_type	CYCLICAL	Surface emitted aerosols added to those in the CAM initial file
srf_emis_cycle_yr	2014
srf_emis_specifier	22 files with “surface_1750-2015_0.9x1.25” in their names.
prescribed_ozone_type	CYCLICAL	${\mathrm{O}}_3$ concentration
prescribed_ozone_cycle_yr	2014
prescribed_ozone_file	ozone_strataero_WACCM_L70_zm5day_18500101-20150103_CMIP6ensAvg_c180923.nc
prescribed_strataero_type	CYCLICAL	MAM4 mode concentrations: dust(3), NaCl(3), ${\mathrm{SO}}_4(1-3)$
prescribed_strataero_cycle_yr	2014
prescribed_strataero_file	ozone_strataero_WACCM_L70_zm5day_18500101-20150103_CMIP6ensAvg_c180923.nc
flbc_type	SERIAL	Lower boundary fluxes of ${\mathrm{CO}}_2,{\mathrm{CH}}_4,{\mathrm{N}}_2\mathrm{O},\mathrm{CFC}11,\mathrm{CFC}12$
flbc_file	LBC_2014-2500_CMIP6_SSP370_0p5degLat_GlobAnnAvg_c190301.nc
tracer_cnst_type	INTERP_MISSING_MONTHS	Chemical concentrations of ${\mathrm{O}}_3,\mathrm{OH},{\mathrm{NO}}_3,{\mathrm{HO}}_2$
tracer_cnst_file	tracer_cnst_halons_3D_L70_2014-2101_CMIP6-SSP5-8.5_c190307.nc
ext_frc_type	INTERP_MISSING_MONTHS
ext_frc_specifier H2O	H2OemissionCH4oxidationx2_3D_L70_1849-2101_CMIP6ensAvg_SSP3-7.0_c190403.nc
ext_frc_specifier num_a1	emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_num_so4_a1_anthro-ene_vertical_mol_175001-210101_0.9x1.25_c20190222.nc
ext_frc_specifier so4_a1	emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_so4_a1_anthro-ene_vertical_mol_175001-210101_0.9x1.25_c20190222.nc