Ocean biogeochemistry in the coupled ocean–sea ice–biogeochemistry model FESOM2.1–REcoM3

This is the underlying dataset of the publication "Ocean biogeochemistry in the coupled ocean–sea ice–biogeochemistry model FESOM2.1–REcoM3" by Gürses et al. (in press), Geoscientific Model Development. In addition to unstructured mesh information, it contains the results of ocean biogeochemistry in the Regulated Ecosystem Model version 3 (REcoM3) coupled to the ocean and sea ice model FESOM2.1. The model simulations cover the period 1958 to 2021 and are forced with observed atmospheric CO₂ and JRA55-do atmospheric reanalyses. Three simulations are provided: <strong>simulation A:</strong> with varying climate forcing conditions and varying atmospheric CO₂ <strong>simulation B:</strong> with constant climate forcing conditions and constant atmospheric CO₂ <strong>simulation D:</strong> with varying climate forcing conditions and constant atmospheric CO₂ The following 2D/3D monthly-averaged fields (data period is given in parentheses) are provided on the native model grid: <strong>Alk:</strong> Alkalinity (2012-2021) <strong>CO2f:</strong> Air-Sea CO₂ flux (1800-2021) <strong>DFe: </strong>Dissolved Iron concentration (2012-2021) <strong>DIN:</strong> Dissolved Inorganic Nitrogen concentration (2012-2021) <strong>DIC:</strong> Dissolved Inorganic Carbon concentration (1800, 1994-2021) <strong>DSi:</strong> Dissolved Inorganic Silicon concentration (2012-2021) <strong>DiaChl:</strong> Chlorophyll a concentration of diatoms (2012-2021) <strong>DetC:</strong> Carbon concentration in slow-sinking detritus (2012-2021) <strong>DetCalc: </strong>Calcite concentration in slow-sinking detritus (2012-2021) <strong>DetSi: </strong>Silicon concentration in slow-sinking detritus (2012-2021) <strong>idetz2c:</strong> Carbon concentration in fast-sinking detritus (2012-2021) <strong>idetz2calc:</strong> Calcite concentration in fast-sinking detritus (2012-2021) <strong>idetz2si:</strong> Silicon concentration in fast-sinking detritus (2012-2021) <strong>HetC:</strong> Small zooplankton carbon biomass (2012-2021) <strong>MLD:</strong> Mixed Layer Depth (2012-2021) <strong>NPPn:</strong> Net Primary Production of small pyhtoplankton (2012-2021) <strong>NPPd:</strong> Net Primary Production of diatoms (2012-2021) <strong>O2:</strong> Dissolved Oxygen concentration (2012-2021) <strong>PhyChl:</strong> Chlorophyll a concentration of small phytoplankton (2012-2021) <strong>Zoo2C:</strong> Macrozooplankton carbon biomass (2012-2021) <strong>pCO2s:</strong> Partial pressure of carbon dioxide of the surface ocean (1970-2021) <strong>salt:</strong> Salinity (2012-2021) <strong>temp:</strong> Temperature (2012-2021) <strong>w:</strong> Vertical velocity (2012-2021) Please contact the corresponding author ([e-mail]) for further information.