n1850.ne30_tn14.hybrid_fatessp_dcs600.20250210

[adagj]

Purpose:
Increasing micro_mg_dcs from 500.D-6 to 600.D-6, in order to test if it is to possible to do increase the very low LWCF of the model without degrading other statistics.

---

Description:
Testing the sensitivity of the dcs variable in the coupled simulation and compare to #67
and #76

dcs: the threshold diameter to convert cloud ice particles to snow
In general: smaller dcs gives less ice clouds and less LWCF, larger dcs gives more ice cloud and more LWCF

---

To get the code

git clone https://github.com/NorESMhub/NorESM.git
cd NorESM
git checkout noresm2_5_alpha08d
./bin/git-fleximod update

• NOTE: a memory leak is present in the run and hits agains the node limit when running past 11 years.
  See memory leak in n1850 case NorESM#550

• create_newcase command

./create_newcase --case /<path_to_case>/n1850.ne30_tn14.hybrid_fatessp_dcs600.20250210 --compset 1850_CAM70%LT%NORESM%CAMoslo_CLM60%FATES-SP_CICE_BLOM%ECO_MOSART_DGLC%NOEVOLVE_SWAV_SESP --res ne30pg3_tn14 --project nn9039k --run-unsupported --mach betzy

• user_nl_cam

! Users should add all user specific namelist changes below in the form of
! namelist_var = new_namelist_value
use_aerocom = .false.
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            = 600.D-6
bndtvg = '/cluster/shared/noresm/inputdata/atm/cam/ggas/noaamisc.r8.nc'

• user_nl_clm

! Turn FATES-SP mode on
use_fates_sp = .true.
! Some settings that will be set when FATES-SP mode is turned on
soil_decomp_method = 'None'
use_lch4 = .false.
fates_spitfire_mode = 0
use_fates_fixed_biogeog = .true.
use_fates_nocomp = .true.
hist_ndens = 1
fates_paramfile='/cluster/work/users/rosief/git/NorESM_MEGAN_test/components/clm/src/fates/parameter_files/fates_params_megan_twostream.nc'
z0param_method='ZengWang2007'
! Turn off a list of fields that are not needed for FATES-SP mode
hist_fexcl1 = 'FATES_TRIMMING', 'FATES_COLD_STATUS', 'FATES_GDD', 'FATES_NCHILLDAYS',
              'FATES_NCOLDDAYS', 'FATES_DAYSINCE_COLDLEAFOFF', 'FATES_DAYSINCE_COLDLEAFON',
              'FATES_CANOPY_SPREAD', 'FATES_VEGC_PF',
              'FATES_STOREC_PF', 'FATES_RECRUITMENT_PF', 'FATES_MORTALITY_PF', 'FATES_PATCHAREA_AP', 'FATES_LAI_AP',
              'FATES_CANOPYAREA_AP', 'FATES_NESTEROV_INDEX', 'FATES_IGNITIONS', 'FATES_FDI', 'FATES_ROS', 'FATES_EFFECT_WSPEED',
              'FATES_FUELCONSUMED', 'FATES_FIRE_INTENSITY', 'FATES_FIRE_INTENSITY_BURNFRAC', 'FATES_BURNFRAC', 'FATES_FUEL_MEF',
              'FATES_FUEL_BULKD', 'FATES_FUEL_EFF_MOIST', 'FATES_FUEL_SAV', 'FATES_FUEL_AMOUNT', 'FATES_FRAGMENTATION_SCALER_SL',
              'FATES_FUEL_MOISTURE_FC', 'FATES_FUEL_AMOUNT_FC', 'FATES_BURNFRAC_AP', 'FATES_FIRE_INTENSITY_BURNFRAC_AP',
              'FATES_FUEL_AMOUNT_AP', 'FATES_FUEL_BURNT_BURNFRAC_FC', 'FATES_LITTER_IN', 'FATES_LITTER_OUT', 'FATES_SEED_BANK',
              'FATES_SEEDS_IN', 'FATES_LITTER_IN_EL', 'FATES_LITTER_OUT_EL', 'FATES_SEED_BANK_EL', 'FATES_SEEDS_IN_LOCAL_EL',
              'FATES_SEEDS_IN_EXTERN_EL', 'FATES_SEED_GERM_EL', 'FATES_SEED_DECAY_EL', 'FATES_STOREC', 'FATES_VEGC',
              'FATES_SAPWOODC', 'FATES_FROOTC', 'FATES_REPROC', 'FATES_STRUCTC', 'FATES_NONSTRUCTC',
              'FATES_VEGC_ABOVEGROUND', 'FATES_CANOPY_VEGC', 'FATES_USTORY_VEGC', 'FATES_PRIMARY_PATCHFUSION_ERR',
              'FATES_DISTURBANCE_RATE_FIRE', 'FATES_DISTURBANCE_RATE_LOGGING', 'FATES_DISTURBANCE_RATE_TREEFALL',
              'FATES_HARVEST_WOODPROD_C_FLUX', 'FATES_GPP_CANOPY', 'FATES_AUTORESP_CANOPY',
              'FATES_GPP_USTORY', 'FATES_AUTORESP_USTORY', 'FATES_CROWNAREA_CL', 'FATES_DEMOTION_CARBONFLUX',
              'FATES_PROMOTION_CARBONFLUX', 'FATES_MORTALITY_CFLUX_CANOPY', 'FATES_MORTALITY_CFLUX_USTORY',
              'FATES_DDBH_CANOPY_SZ', 'FATES_DDBH_USTORY_SZ', 'FATES_BASALAREA_SZ',
              'FATES_VEGC_ABOVEGROUND_SZ', 'FATES_LAI_CANOPY_SZ', 'FATES_MORTALITY_CANOPY_SZ', 'FATES_NPLANT_USTORY_SZ',
              'FATES_LAI_USTORY_SZ', 'FATES_NPLANT_SZ', 'FATES_NPLANT_AC', 'FATES_MORTALITY_BACKGROUND_SZ',
              'FATES_MORTALITY_HYDRAULIC_SZ', 'FATES_MORTALITY_CSTARV_SZ', 'FATES_MORTALITY_IMPACT_SZ',
              'FATES_MORTALITY_FIRE_SZ', 'FATES_MORTALITY_TERMINATION_SZ', 'FATES_MORTALITY_LOGGING_SZ',
              'FATES_MORTALITY_FREEZING_SZ', 'FATES_MORTALITY_SENESCENCE_SZ', 'FATES_MORTALITY_AGESCEN_SZ',
              'FATES_MORTALITY_AGESCEN_AC', 'FATES_MORTALITY_USTORY_SZ', 'FATES_FROOTMAINTAR', 'FATES_CROOTMAINTAR',
              'FATES_LSTEMMAINTAR', 'FATES_NEP', 'FATES_HET_RESP', 'FATES_FIRE_CLOSS', 'FATES_FIRE_FLUX_EL',
              'FATES_LITTER_AG_FINE_EL', 'FATES_LITTER_BG_FINE_EL', 'FATES_LITTER_BG_CWD_EL', 'FATES_LITTER_AG_CWD_EL',
              'FATES_LITTER_CWD_ELDC', 'FATES_LEAF_ALLOC', 'FATES_SEED_ALLOC', 'FATES_STEM_ALLOC', 'FATES_FROOT_ALLOC',
              'FATES_CROOT_ALLOC', 'FATES_STORE_ALLOC', 'FATES_AUTORESP', 'FATES_GROWTH_RESP',
              'FATES_LEAFMAINTAR', 'FATES_MAINT_RESP', 'FATES_NPP', 'FATES_NPP_PF'

• xmlchange commands

./xmlchange NTASKS=1920
./xmlchange NTASKS_OCN=256
./xmlchange ROOTPE=0
./xmlchange ROOTPE_OCN=1920
./xmlchange BLOM_VCOORD=cntiso_hybrid,BLOM_TURBULENT_CLOSURE=
./xmlchange RUN_TYPE=hybrid
./xmlchange RUN_REFCASE=n1850.ne30_tn14.hybrid_fatessp.20241204
./xmlchange RUN_REFDATE=0071-01-01
./xmlchange GET_REFCASE=FALSE
./xmlchange STOP_OPTION=nyears
./xmlchange STOP_N=7
./xmlchange REST_N=1
./xmlchange REST_OPTION=nyears
./xmlchange RESUBMIT=4
./xmlchange --subgroup case.run JOB_WALLCLOCK_TIME=48:00:00
./xmlchange --subgroup case.st_archive JOB_WALLCLOCK_TIME=06:00:00
./xmlchange PROJECT=nn9560k
./case.setup
./case.build
./case.submit

Compset long name
1850_CAM70%LT%NORESM%CAMoslo_CLM60%FATES-SP_CICE_BLOM%ECO_MOSART_DGLC%NOEVOLVE_SWAV_SESP

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Model grid long name
a%ne30np4.pg3_l%ne30np4.pg3_oi%ne30np4.pg3_r%r05_w%null_z%null_g%gris4_m%tnx1v4

---

Case directory:

• Locally on betzy (if still available):
  /cluster/projects/nn9560k/adagj/cases-noresm2.5/n1850.ne30_tn14.hybrid_fatessp_dcs600.20250210

• On github:
  https://github.com/NorESMhub/noresm_simulations/tree/$CASE

---

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

• On github: https://github.com/NorESMhub/noresm/tree/<code_version>
• https://github.com/username/noresm/tree/<code_version>

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Diagnostics:

• Diags (if available):

---

Output:

• Raw output on nird (if still available):
• CAM Climos:

---

Contacts:

---

Extra details:

[mvdebolskiy]

@rosiealice Why are we still using this fates parameter file?

fates_paramfile='/cluster/work/users/rosief/git/NorESM_MEGAN_test/components/clm/src/fates/parameter_files/fates_params_megan_twostream.nc'

Do you have some other parameters updated there apart from megan?

[rosiealice]

There should be a couple of changes to the parameter file in the Drydep PR, which adds the drydep params and also changes the defaults for tropical forest fluxes. Do you think we should bring in the latter changes earlier?

I had been holding off running with broader changes until we can run with adrianna's calibrated file that uses medlyn see NorESMhub/CTSM#116 (comment)

[oyvindseland]

Copied the first 35 years to /datalake/NS9560K/noresm3/cases/n1850.ne30_tn14.hybrid_fatessp_dcs600.20250210

Diagnostics: https://ns2345k.web.sigma2.no/datalake/diagnostics/ADF/plots/n1850.ne30_tn14.hybrid_fatessp_dcs600.20250210_6_35_vs_n1850.ne30_tn14.hybrid_fatessp.20241219_6_35/
and
https://ns9560k.web.sigma2.no/datalake/diagnostics/noresm/oyvinds/n1850.ne30_tn14.hybrid_fatessp_dcs600.20250210/

[andrearosendahl]

Aerosol diagnostics on AeroVal:
https://aeroval-test.met.no/andrear/pages/intercomp/?project=NorESM3-dev&experiment=dcs_sensitivity-nonobs&station=ALL&parameter=od550aer&tab=heatmap#

https://aeroval-test.met.no/andrear/pages/intercomp/?project=NorESM3-dev&experiment=dcs_sensitivity-obs&station=ALL&parameter=od550aer&tab=heatmap#

Comparison of this simulation with #67
and #76 and CMIP6 NorESM2-MM