ORCHIDEE simulated vegetation and soil COS fluxes

This dataset provides global simulations of vegetation and soil carbonyl sulfide (COS) fluxes produced with the ORCHIDEE land surface model. The data cover the period 2000-2019 at monthly temporal resolution and a 0.5° × 0.5° spatial resolution. The COS fluxes are: Vegetation COS uptake: Based on the model of Berry et al. (2013), as implemented in ORCHIDEE by Maignan et al. (2021). Soil COS exhanges: Implemented in ORCHIDEE following Abadie et al. (2022), using two alternative approaches: Empirical model: From Berry et al. (2013), assuming all soils are oxic. Mechanistic-based model: From Ogée et al. (2016), distinguishing between oxic and anoxic soil grid cells. Atmospheric COS forcing: Fluxes were computed using 3-hourly atmospheric COS concentrations from the lowest vertical level (33 m above surface) of the LMDz model. These concentrations were obtained from an atmospheric inversion using optimized surface fluxes, as described in Remaud et al. (2022). Variables in the netcdf file: Variable name Description Unit Comments lat Latitude Degrees North 0.5° resolution lon Longitude Degrees East 0.5° resolution time_counter Time Seconds since 2000-01-01 00:00:00 Monthly timestep Areas Mesh areas m2 - Contfrac Continental fraction - - veget Vegetation types - 15 plant functional types (PFT) maxvegetfrac Maximum fraction of vegetation - PFT-dependent Fcos_veg Vegetation COS flux pmol/m2/s PFT-dependent Fcos_soil_oxic Oxic soil COS flux from the mechanistic-based model pmol/m2/s PFT-dependent Fcos_soil_anoxic Anoxic soil COS flux from the mechanistic-based model pmol/m2/s - Fcos_soil_empirical Soil COS flux from the empirical model pmol/m2/s PFT-dependent