DOI: 10.11582/2025.0dccsv9s
title: CTSM-EXICE model output: Permafrost thaw and ground subsidence in the Arctic

description: This dataset contains model output from the Community Terrestrial Systems Model, CTSM (corresponds to the Community Land Model version 5, CLM5), utilizing excess ground ice configuration (CTSM-EXICE) in the biogeochemistry (BGC) mode over the domain of the Arctic at 0.1° horizontal resolution using boundary conditions from a set of global and regional climate model (GCM-RCM) combinations: CNRM-ICON, NorESM-ICON, CNRM-HCLIM, and NorESM-HCLIM.
For context, GCMs utilized were run at 1° resolution based on two selected storylines (CNRM-ESM2-1 - strong warming in the Barents-Kara Sea and weak Arctic amplification, and NorESM2-MM - weak warming in the Barents-Kara Sea and strong Arctic amplification) and the SSP3-7.0 scenario for the future simulations. ICON and HCLIM were run on 0.1° and used to downscale the respective storylines.
This dataset provides outputs from four CTSM-EXICE simulations, each forced by one of the respective four forcings. The CTSM-EXICE simulations utilize the same projection (polar stereographic) and resolution (0.1°) as their forcings. Each simulation comprises a 390-year spin-up, a historical run (1985-2014), and a future simulation (2015-2099) following the SSP3-7.0 scenario. CTSM-EXICE spin-up is forced by historical output (1985-2014) from four forcing datasets. The repeatable cycling of these 30 years was done 13 times (390 years of spin-up). The historical and future CTSM-EXICE simulations were driven by the historical and future outputs from four forcings, respectively. Restart files are provided for all simulation stages. 
All files in this dataset are on a monthly resolution. The list of model output variables in this dataset is provided below (and further explained in https://escomp.github.io/CTSM/users_guide/setting-up-and-running-a-case/history_fields_nofates.html).
Variable list:
'ALT', 'ALTMAX', 'ALTMAX_LASTYEAR', 'CH4PROD', 'CH4_EBUL_TOTAL_SAT', 'CH4_EBUL_TOTAL_UNSAT', 'CH4_SURF_AERE_SAT', 'CH4_SURF_AERE_UNSAT', 'CH4_SURF_DIFF_SAT', 'CH4_SURF_DIFF_UNSAT', 'CH4_SURF_EBUL_SAT', 'CH4_SURF_EBUL_UNSAT', 'EFLX_GNET', 'EFLX_GRND_LAKE', 'EFLX_LH_TOT', 'EFLX_LH_TOT_ICE', 'EFLX_LH_TOT_R', 'EFLX_LH_TOT_U', 'EFLX_SOIL_GRND', 'ER', 'FCEV', 'FCH4', 'FCH4TOCO2', 'FCH4_DFSAT', 'FCO2', 'FCTR', 'FGEV', 'FGR', 'FGR12', 'FGR_ICE', 'FH2OSFC', 'FH2OSFC_NOSNOW', 'FINUNDATED', 'FINUNDATED_LAG', 'FIRA', 'FIRE', 'FLDS', 'FPI', 'FPSN', 'FPSN24', 'FSA', 'FSAT', 'FSDS', 'FSDSND', 'FSDSNDLN', 'FSDSNI', 'FSDSVD', 'FSDSVDLN', 'FSDSVI', 'FSDSVILN', 'FSH', 'FSH_PRECIP_CONVERSION', 'FSH_R', 'FSH_RUNOFF_ICE_TO_LIQ', 'FSH_TO_COUPLER', 'FSM', 'FSNO', 'FSR', 'FSRND', 'FSRNI', 'FSRVD', 'FSRVDLN', 'FSRVI', 'GPP', 'GR', 'H2OSFC', 'H2OSNO', 'HR', 'MR', 'NBP', 'NEE', 'NEM', 'NEP', 'QBOT', 'QDRAI', 'QDRAI_PERCH', 'QFLOOD', 'QFLX_EVAP_TOT', 'QFLX_EVAP_VEG', 'QFLX_ICE_DYNBAL', 'QFLX_LIQDEW_TO_TOP_LAYER', 'QFLX_LIQEVAP_FROM_TOP_LAYER', 'QH2OSFC', 'QH2OSFC_TO_ICE', 'QOVER', 'QRUNOFF', 'QSOIL', 'QVEGE', 'QVEGT', 'Qair', 'Qh', 'Qle', 'Qstor', 'RAIN', 'Rnet', 'SMINN', 'SMIN_NH4', 'SMIN_NO3', 'SMIN_NO3_LEACHED', 'SMIN_NO3_RUNOFF', 'SNOW', 'SNOWDP', 'SNOWICE', 'SNOWICE_ICE', 'SNOWLIQ', 'SNOWLIQ_ICE', 'SNOW_5D', 'SNOW_DEPTH', 'SNOW_DEPTH_ICE', 'SNOW_FROM_ATM', 'SNOW_ICE', 'SNOW_PERSISTENCE', 'SNOW_SINKS', 'SNOW_SOURCES', 'SOIL10', 'SOILC_HR', 'SR', 'TG', 'TG_ICE', 'TG_R', 'TG_U', 'TH2OSFC', 'THBOT', 'TLAI', 'TOTECOSYSC', 'TOTECOSYSN', 'TOTFIRE', 'TOTLITC', 'TOTLITC_1m', 'TOTLITN', 'TOTLITN_1m', 'TOTPFTC', 'TOTPFTN', 'TOTSOILICE', 'TOTSOILLIQ', 'TOTSOMC', 'TOTSOMC_1m', 'TOTSOMN', 'TOTSOMN_1m', 'TOTVEGC', 'TOTVEGN', 'TOT_WOODPRODC', 'TOT_WOODPRODC_LOSS', 'TOT_WOODPRODN', 'TOT_WOODPRODN_LOSS', 'TSA', 'TSOI_10CM', 'TWS', 'VPD', 'VPD2M', 'ZWT', 'ZWT_CH4_UNSAT', 'ZWT_PERCH', 'TSOI', 'H2OSOI', 'SOILC_vr', 'SOILICE', 'SOILLIQ', 'CPOOL', 'FCOV', 'ALBD', 'TBOT', 'TREFMNAV', 'TREFMXAV', 'RH2M', 'WIND', 'TSKIN', 'PBOT', 'SUBSIDENCE', 'TOTEXICE_VOL', 'EXCESS_ICE', 'NPP', 'CROPPROD1C', 'CROPPROD1C_LOSS', 'CROPPROD1N', 'CROPPROD1N_LOSS', 'LAND_USE_FLUX', 'VOCFLXT', 'MEG_acetaldehyde', 'MEG_acetic_acid', 'MEG_acetone', 'MEG_carene_3', 'MEG_ethanol', 'MEG_formaldehyde', 'MEG_isoprene', 'MEG_methanol', 'MEG_pinene_a', 'MEG_thujene_a', 'SOM_C_LEACHED', 'SOILN_vr', 'QSNOMELT', 'QTOPSOIL', 'RAIN_FROM_ATM', 'RH', 'SOILWATER_10CM', 'FSAT', 'SNO_T', 'SNO_TK', 'TSL', 'TV', 'Z0MV', 'Z0M_TO_COUPLER', 'ZBOT', 'ZII', 'USTAR'