n1850.ne30_tn14.noresm3_0_beta01.camec_coare.20250807

[matsbn]

Purpose:

Similar to #202, testing noresm3_0_beta01 with improved CAM energy conservation and enthalpy flux between atmosphere and ocean, but with COARE surface flux scheme enabled and adjusted CAM parameters micro_mg_dcs and clubb_c8.

---

Description:

The experiment is comparable to #190, but with noresm3_0_beta01 code base updated with PRs implementing improved CAM energy conservation and enthalpy flux exchange. The simulation is branched from #202 after year 40 with further options and parameter changes compared to #202.

To get the code

git clone https://github.com/NorESMhub/NorESM.git
cd NorESM
git checkout noresm3_0_beta01
./bin/git-fleximod update

Local code base

/cluster/projects/nn9560k/matsbn/GitHub/matsbn/noresm3_0_beta01_enthalpy_PRs

The local base is updated with the merging of the following PRs:

• components/cam: Added options for enthalpy correction and new ZM options CAM#227 (needed to manually correct the merge of bld/namelist_files/namelist_definition.xml)
• components/cam/src/chemistry/oslo_aero: Modification needed for improved enthalpy calculations OSLO_AERO#58
• components/cmeps: Added options for comunication of enthalpy correction to the coupled system CMEPS#36
• components/blom: Adding heat flux due to material enthalpy flux of water exchange with atmosphere BLOM#618

Create the case with

/cluster/projects/nn9560k/matsbn/GitHub/matsbn/noresm3_0_beta01_enthalpy_PRs/cime/scripts/create_newcase --case /cluster/projects/nn9560k/matsbn/NorESM/cases/n1850.ne30_tn14.noresm3_0_beta01.camec_coare.20250807 --compset 1850_CAM70%LT%NORESM%CAMoslo_CLM60%FATES_CICE_BLOM%HYB%ECO_MOSART_DGLC%NOEVOLVE_SWAV_SESP --res ne30pg3_tn14 --project nn9560k --machine betzy --run-unsupported --user-mods-dir /cluster/projects/nn9560k/matsbn/GitHub/matsbn/noresm3_0_beta01_enthalpy_PRs/cime_config/usermods_dirs/reduced_out_devsim/

SourceMods

• SourceMods/src.drv/med_phases_prep_ocn_mod.F90 (set separate_varlat = .true.)
• SourceMods/src.blom/ocn_import_export.F90 (set hmat_method = 2)

• user_nl_cam

use_aerocom = .false.
rafsip_on = .true.
interpolate_nlat   = 192
interpolate_nlon   = 288
interpolate_output = .true.
history_aerosol = .false.
zmconv_c0_lnd  =  0.0075D0
zmconv_c0_ocn  =  0.0300D0
zmconv_ke =  5.0E-6
zmconv_ke_lnd =  1.0E-5
clim_modal_aero_top_press =  1.D-4
micro_mg_dcs = 630.D-6
clubb_c8 = 4.2
bndtvg = '/cluster/shared/noresm/inputdata/atm/cam/ggas/noaamisc.r8.nc'
dust_emis_method = 'Leung_2023'
dust_emis_fact = 9.20D0
compute_enthalpy_flux = .true.
fincl1 = 'PTTEND','PTTEND_DME', 'EFLX','MFLX','IETEND_DME','TFIX','te_tnd','dEdt_efix_physics','dEdt_physics',
         'Z1000', 'Z700', 'Z500', 'Z300', 'Z200', 'Z100', 'Z050', 'OMEGA850', 'OMEGA500',
         'T1000', 'T925', 'T850', 'T700', 'T500', 'T400', 'T300', 'T200', 'T010',
         'U850', 'U500', 'U250', 'U200', 'U010', 'V850', 'V500', 'V250', 'V200', 'Q1000', 'Q925', 'Q850', 'Q200'

• user_nl_clm

fates_history_dimlevel = 1,2
hist_fexcl1='ACTUAL_IMMOB','BTRANMN','EFLXBUILD','EFLX_DYNBAL','EFLX_GRND_LAKE','FATES_DEMOTION_CARBONFLUX','FATES_EXCESS_RESP','FATES_MAINT_RESP_UNREDUCED','FATES_PRIMARY_PATCHFUSION_ERR','FATES_PROMOTION_CARBONFLUX','FATES_SEEDS_IN_LOCAL','FATES_UNGERM_SEED_BANK','HEAT_FROM_AC','HIA','HIA_R','HIA_U','HUMIDEX','HUMIDEX_R','HUMIDEX_U','LAKEICEFRAC_SURF','LAKEICETHICK','LNC','MORTALITY_CROWNAREA_CANOPY','MORTALITY_CROWNAREA_UNDERSTORY','QIRRIG_FROM_GW_CONFINED','QIRRIG_FROM_GW_UNCONFINED','QIRRIG_FROM_SURFACE','RSSHA','RSSUN','SWBGT','SWBGT_U','SWBGT_R','TBUILD','URBAN_AC','URBAN_HEAT','WASTEHEAT','WBT','WBT_R','WBT_U','FPG','FSH_R','F_DENIT','F_N2O_DENIT','F_N2O_NIT','F_NIT','GROSS_NMIN','HEAT_FROM_AC','HIA_R','HIA_U','HUMIDEX_R','HUMIDEX_U','LITTERC_HR','LIT_CEL_N','LIT_LIG_N','LIT_LIG_C','LIT_MET_C','LIT_MET_N','MORTALITY_CROWNAREA_CANOPY','MORTALITY_CROWNAREA_UNDERSTORY','NDEP_TO_SMINN','NET_NMIN','NFIX_TO_SMINN','POTENTIAL_IMMOB','POT_F_DENIT','POT_F_NIT','QIRRIG_FROM_GW_CONFINED','QIRRIG_FROM_GW_UNCONFINED','QIRRIG_FROM_SURFACE','SMINN_TO_PLANT','SMIN_NH4','SMIN_NO3','SMIN_NO3_LEACHED','SMIN_NO3_RUNOFF','SOM_ACT_C','SOM_ACT_N','SOM_C_LEACHED','SOM_PAS_C','SOM_PAS_N','SOM_SLO_C','SUPPLEMENT_TO_SMINN','SWBGT_R','SWBGT_U','TOTCOLC','TOTCOLN','TOTECOSYSC','TOTECOSYSN','TOTLITC','TOTLITC_1m','TOTLITN','TOTLITN_1m','TOTSOMC','TOTSOMN','TOT_WOODPRODC','TOT_WOODPRODC_LOSS','TOT_WOODPRODN','TOT_WOODPRODN_LOSS','WASTEHEAT','WBT','WBT_U','WBT_R','DWT_WOODPRODN_GAIN','VENTILATION','LIT_LIG_N_vr','LIT_LIG_N_vr','LIT_MET_N_vr','LIT_CEL_N_vr','SOILN_vr','SOM_ACT_N_vr','SOM_PAS_N_vr','SOM_SLO_N_vr','SMINN_vr','SMIN_NO3_vr','DWT_WOODPRODC_GAIN','EFLX_LH_TOT_R','LAISHA','LAISUN','SMINN','TOTSOMN_1m','SMIN_NH4_vr'
use_fates_luh = .false.
use_fates_nocomp = .true.
use_fates_fixed_biogeog = .true.
hist_fincl1 = 'FCO2'

• user_nl_cpl

ocn_surface_flux_scheme = 1
add_gusts = .false.

• xmlchange commands

./xmlchange STOP_OPTION=nyears
./xmlchange STOP_N=5
./xmlchange REST_N=1
./xmlchange --subgroup case.run JOB_WALLCLOCK_TIME=48:00:00
./xmlchange --subgroup case.st_archive JOB_WALLCLOCK_TIME=01:00:00
./xmlchange --subgroup case.compress JOB_WALLCLOCK_TIME=06:00:00
./xmlchange RESUBMIT=5  </command>
./xmlchange RUN_TYPE=branch  </command>
./xmlchange RUN_REFCASE=n1850.ne30_tn14.noresm3_0_beta01.cam_energy_conserv.20250718  </command>
./xmlchange RUN_REFDATE=0041-01-01  </command>
./xmlchange DRV_RESTART_POINTER=rpointer.cpl.0041-01-01-00000

---

Compset long name

1850_CAM70%LT%NORESM%CAMoslo_CLM60%FATES_CICE_BLOM%HYB%ECO_MOSART_DGLC%NOEVOLVE_SWAV_SESP

---

Model grid long name

a%ne30np4.pg3_l%ne30np4.pg3_oi%tnx1v4_r%r05_w%null_z%null_g%gris4d_m%tnx1v4

---

Start year:
41

---

End year:
70

---

Case directory:

• Locally on betzy (if still available):
  /cluster/projects/nn9560k/matsbn/NorESM/cases/n1850.ne30_tn14.noresm3_0_beta01.camec_coare.20250807

• On github:

---

Code version on github (either NorESMhub or user's fork):

• On github: https://github.com/NorESMhub/NorESM/releases/tag/noresm3_0_beta01

---

Diagnostics:

• https://ns2345k.web.sigma2.no/datalake/diagnostics/noresm/matsbn/n1850.ne30_tn14.noresm3_0_beta01.camec_coare.20250807/

---

Output:
/datalake/NS9560K/noresm3/cases/n1850.ne30_tn14.noresm3_0_beta01.camec_coare.20250807

---

Contacts:
Mats Bentsen

---

Extra details:

[oyvindseland]

Just to make sure. None of the ZM modifications is turned on, you are just using the code base in which it is possible to do so?

[adagj]

Atmosphere diag vs n1850.ne30_tn14.nor3_b01-noLU_yr101.20250729

[adagj]

Atmosphere diagnostics vs n1850.ne30_tn14.noresm3_0_beta01-noLU_650dcs_4p0clubbc8_0p5dust.20250708