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Run CESM2 single-forcing ensemble

A

agilbert

Ash Gilbert
New Member
Hi,

I want to run nudged single-forcing ensembles based on the CESM2 single-forcing ensembles. I was able to find the case directories for all the ensembles created in Simpson et al. 2023, but I'm unsure of what specific namelist changes, code modifications, and CESM version I should be using to create the single-forcing ensembles. Any clarification would be appreciated!
 
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I

islas

Moderator
Staff member
Hi Ash,

These were run with cesm2.1.4-rc.07. I think cesm2.1.4-rc.08 runs on derecho so you could use that. I don't think you need any code modifications. The changes that are needed are all in the namelist settings that specify the forcing files e.g., for the AAER one that would be all this and hopefully you could use this example to figure out the equivalent settings in the namelists for the other ones if you've found the namelists for each of them.

!================
! 1850 GHG
!================
&chem_surfvals_nl
ch4vmr = 791.6e-9
co2vmr = 284.7e-6
f11vmr = 12.48e-12
f12vmr = 0.0
flbc_list = ' '
n2ovmr = 275.68e-9
/

! Evolving anthropogenic aerosols; BB+natural aerosols CYCLICAL over 1850 values (by interpolating between two 1850 repeating sets of values).
&chem_inparm
chem_use_chemtrop = .true.
clim_soilw_file = '/glade/p/cesmdata/cseg/inputdata/atm/cam/chem/trop_mozart/dvel/clim_soilw.nc'
depvel_file = '/glade/p/cesmdata/cseg/inputdata/atm/cam/chem/trop_mozart/dvel/depvel_monthly.nc'
depvel_lnd_file = '/glade/p/cesmdata/cseg/inputdata/atm/cam/chem/trop_mozart/dvel/regrid_vegetation.nc'
exo_coldens_file = '/glade/p/cesmdata/cseg/inputdata/atm/cam/chem/trop_mozart/phot/exo_coldens.nc'

!!
ext_frc_cycle_yr = -99999
ext_frc_specifier = 'H2O -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/elev/H2OemissionCH4oxidationx2_3D_L70_1850cycling_0.9x1.25_c20210210.nc',
'num_a1 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1750_2015/emissions-cmip6_num_so4_a1_anthro-ene_vertical_1750-2015_0.9x1.25_c20170616.nc',
'num_a1 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1850_cyclical/emissions-cmip6_num_a1_so4_contvolcano_vertical_1850cycling_0.9x1.25_c191116.nc',
'num_a2 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1850_cyclical/emissions-cmip6_num_a2_so4_contvolcano_vertical_1850cycling_0.9x1.25_c191116.nc',
'SO2 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1850_cyclical/emissions-cmip6_SO2_contvolcano_vertical_1850cycling_0.9x1.25_c191116.nc',
'so4_a1 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1750_2015/emissions-cmip6_so4_a1_anthro-ene_vertical_1750-2015_0.9x1.25_c20170616.nc',
'so4_a1 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1850_cyclical/emissions-cmip6_so4_a1_contvolcano_vertical_1850cycling_0.9x1.25_c191116.nc',
'so4_a2 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1850_cyclical/emissions-cmip6_so4_a2_contvolcano_vertical_1850cycling_0.9x1.25_c191116.nc'
ext_frc_type = 'INTERP_MISSING_MONTHS'

srf_emis_cycle_yr = -99999
srf_emis_specifier = 'bc_a4 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_bc_a4_anthro_surface_mol_175001-210101_0.9x1.25_c20190222.nc',
'bc_a4 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_bc_a4_bb_surface_1850cycling_0.9x1.25_c20210130.nc',
'DMS -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_DMS_bb_surface_1850cycling_0.9x1.25_c20210131.nc',
'DMS -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1850_cyclical/emissions-cmip6_DMS_other_surface_1850cycling_0.9x1.25_c191116.nc',
'num_a1 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_num_so4_a1_bb_surface_1850cycling_0.9x1.25_c20210131.nc',
'num_a1 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_num_so4_a1_anthro-ag-ship_surface_mol_175001-210101_0.9x1.25_c20200924.nc',
'num_a2 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_num_so4_a2_anthro-res_surface_mol_175001-210101_0.9x1.25_c20200924.nc',
'num_a4 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_num_bc_a4_bb_surface_1850cycling_0.9x1.25_c20210131.nc',
'num_a4 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_num_bc_a4_anthro_surface_mol_175001-210101_0.9x1.25_c20190222.nc',
'num_a4 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_num_pom_a4_anthro_surface_mol_175001-210101_0.9x1.25_c20190222.nc',
'num_a4 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_num_pom_a4_bb_surface_1850cycling_0.9x1.25_c20210131.nc',
'pom_a4 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_pom_a4_anthro_surface_mol_175001-210101_0.9x1.25_c20190222.nc',
'pom_a4 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_pom_a4_bb_surface_1850cycling_0.9x1.25_c20210131.nc',
'SO2 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_SO2_anthro-ag-ship-res_surface_mol_175001-210101_0.9x1.25_c20200924.nc',
'SO2 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_SO2_anthro-ene_surface_mol_175001-210101_0.9x1.25_c20190222.nc',
'SO2 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_SO2_bb_surface_1850cycling_0.9x1.25_c20210131.nc',
'so4_a1 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_so4_a1_anthro-ag-ship_surface_mol_175001-210101_0.9x1.25_c20200924.nc',
'so4_a1 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_so4_a1_bb_surface_1850cycling_0.9x1.25_c20210131.nc',
'so4_a2 -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_so4_a2_anthro-res_surface_mol_175001-210101_0.9x1.25_c20200924.nc',
'SOAG -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370/emissions-cmip6-ScenarioMIP_IAMC-AIM-ssp370-1-1_SOAGx1.5_anthro_surface_mol_175001-210101_0.9x1.25_c20200403.nc',
'SOAG -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/emissions_ssp370-BB_smoothed/emissions-cmip6_smoothed_SOAGx1.5_bb_surface_1850cycling_0.9x1.25_c20210131.nc',
'SOAG -> /glade/p/cesmdata/cseg/inputdata/atm/cam/chem/emis/CMIP6_emissions_1850_cyclical/emissions-cmip6_SOAGx1.5_biogenic_surface_1850cycling_0.9x1.25_c191116.nc'
srf_emis_type = 'INTERP_MISSING_MONTHS'


!! piCNTL
tracer_cnst_cycle_yr = 1850
tracer_cnst_datapath = '/glade/p/cesmdata/cseg/inputdata/atm/cam/tracer_cnst'
tracer_cnst_file = 'tracer_cnst_WACCM6_halons_3DmonthlyL70_1850climoCMIP6piControl001_y21-50avg_c180802.nc'
tracer_cnst_filelist = ''
tracer_cnst_specifier = 'O3','OH','NO3','HO2'
tracer_cnst_type = 'CYCLICAL'


xactive_prates = .false.
xs_long_file = '/glade/p/cesmdata/cseg/inputdata/atm/waccm/phot/temp_prs_GT200nm_JPL10_c140624.nc'
/

!! piCntl
&prescribed_ozone_nl
prescribed_ozone_cycle_yr = 1850
prescribed_ozone_datapath = '/glade/p/cesmdata/cseg/inputdata/atm/cam/ozone_strataero'
prescribed_ozone_file = 'ozone_strataero_cyclical_WACCM6_L70_CMIP6-piControl.001_y21-50avg_zm_5day_c180802.nc'
prescribed_ozone_name = 'O3'
prescribed_ozone_type = 'CYCLICAL'
/

!! piCntl
&prescribed_strataero_nl
prescribed_strataero_cycle_yr = 1850
prescribed_strataero_datapath = '/glade/p/cesmdata/cseg/inputdata/atm/cam/ozone_strataero'
prescribed_strataero_file = 'ozone_strataero_cyclical_WACCM6_L70_CMIP6-piControl.001_y21-50avg_zm_5day_c180802.nc'
prescribed_strataero_type = 'CYCLICAL'
prescribed_strataero_use_chemtrop = .true.
/

!! piCntl
&solar_data_opts
solar_data_type = 'FIXED'
solar_data_ymd = 18500101
solar_htng_spctrl_scl = .true.
solar_irrad_data_file = '/glade/p/cesmdata/cseg/inputdata/atm/cam/solar/SolarForcingCMIP6piControl_c160921.nc'
/
 
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