Project: Global simulations of ocean-sea ice-biogeochemistry model FESOM1.4-REcoM2 with ice-shelf cavities and eddy-permitting grid resolution in the high-latitude Southern Ocean - This project includes global model simulations with the global multi-resolution Finite Element Sea Ice-Ocean Model (FESOM version 1.4) coupled to the Regulated Ecosystem Model (REcoM version 2). For this project, model simulations include a representation of ice-shelf cavities and were run from 1950-2100 on a model grid with eddy-permitting resolution on the Antarctic continental shelves. The ocean-only model simulations were forced at the ocean surface with 3-hourly atmospheric output from the AWI Climate Model. The project includes model experiments under four “Shared Socioeconomic Pathways” emission scenarios and sensitivity experiments facilitating the separation of natural and anthropogenic components of the oceanic carbon cycle. The provided model simulations were initially run to assess the potential over the 21st century for the crossing of tipping points in Antarctic Bottom Water formation and the associated carbon sequestration in the Weddell Sea. Since then, these simulations have been used for a broader assessment of potential future trajectories of the coupled physical-biogeochemical system in the high-latitude Southern Ocean. Computing resources were provided by the North-German Supercomputing Alliance (HLRN) project hbk00079, and the work has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 820989 (project COMFORT; https://comfort.w.uib.no/). COMFORT aims to assess tipping points in the coupled cycles of carbon, oxygen, and nutrients in the ocean for determining and achieving safe operating spaces. Summary: This dataset includes all variables of the model experiment “simC historical” conducted with the global ocean-sea ice-biogeochemistry model FESOM1.4-REcoM2 with ice-shelf cavities and eddy-permitting resolution on Antarctic shelves. For this experiment, atmospheric CO2 concentrations vary, but all other atmospheric forcing variables (e.g., air temperature, winds, humidity, precipitation) are held constant throughout the simulation. Output is provided from 1980-2014. The years 1950-1979 are interpreted as spin-up and not provided here. The output is sorted by output frequency (monthly or daily) and model component (FESOM or REcoM). The data is sorted as follows: - annual_FESOM - annual_REcoM - monthly_FESOM - monthly_REcoM Filname convention: Variable_outputFreq_FESOM1.4-REcoM2_experimentName_experimentTime_year.nc Computing resources were provided by the North-German Supercomputing Alliance (HLRN) project hbk00079.