Monthly resolved modelled oceanic emissions of carbonyl sulphide and carbon disulphide for the period 2000–2019

Abstract. Carbonyl sulphide (OCS) is the most abundant, long-lived sulphur gas in atmosphere and a major supplier of to stratospheric sulphate aerosol layer. The short-lived carbon disulphide (CS2) oxidized OCS constitutes indirect source atmospheric budget. budget not well constrained due large missing needed compensate for substantial evidence that was provided significantly higher sinks. Oceanic emissions are associated with uncertainties. Here we provide first, monthly resolved ocean emission inventory both gases period 2000–2019 (available at https://doi.org/10.5281/zenodo.4297010) (Lennartz et al., 2020a). Emissions calculated numerical box model (2.8?×2.8? resolution Equator, T42 grid) oceanic surface mixed layer, driven by ERA5 data from ECMWF chromophoric dissolved organic matter (CDOM) Aqua MODIS. We find interannual variability smaller than seasonal mainly variations CDOM, which influences photochemical light-independent production. A comparison global database more 2500 measurements reveals overall good agreement. CS2 constitute larger equally show connected CDOM. estimate uncertainties as process understanding marine cycling incomplete. encourage use here input modelling studies further assess role climate.