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000889377 1001_ $$0P:(DE-HGF)0$$aLennartz, S. T.$$b0$$eCorresponding author
000889377 245__ $$aMonthly resolved modelled oceanic emissions of carbonyl sulfide for the period 2000-2019
000889377 260__ $$aBremerhaven$$bCopernics Publication$$c2020
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000889377 520__ $$aCarbonyl sulfide (OCS) is the most abundant, long-lived sulphur gas in the atmosphere and a major supplier of sulfur to the stratospheric sulfate aerosol layer. The short-lived gas carbon disulfide (CS2) is oxidized to OCS and constitutes a major indirect source to the atmospheric OCS budget. The atmospheric budget of OCS is not well constrained due to a large missing source needed to compensate for substantial evidence that was provided for significantly higher sinks. Oceanic emissions are associated with major uncertainties. Here we provide a first, monthly resolved ocean emission inventory of both gases for the period 2000–2019 (available at https://doi.org/10.5281/zenodo.4297010) (Lennartz et al., 2020a). Emissions are calculated with a numerical box model (resolution 2.8° × 2.8° at equator, T42 grid) for the surface mixed layer. We find that interannual variability in OCS emissions is smaller than seasonal variability, and is mainly driven by variations in chromophoric dissolved organic matter (CDOM), which influences both photochemical and light-independent production. A comparison with a global database of more than 2500 measurements reveals overall good agreement. Emissions of CS2 constitute a larger sulfur source to the atmosphere than OCS, and equally show interannual variability connected to variability of CDOM. The emission estimate of CS2 is associated with higher uncertainties, as process understanding of the marine cycling of CS2 is incomplete. We encourage the use of the data provided here as input for atmospheric modelling studies to further assess the atmospheric OCS budget and the role of OCS in climate.
000889377 536__ $$0G:(DE-HGF)POF3-244$$a244 - Composition and dynamics of the upper troposphere and middle atmosphere (POF3-244)$$cPOF3-244$$fPOF III$$x0
000889377 7001_ $$0P:(DE-HGF)0$$aGauss, M.$$b1
000889377 7001_ $$0P:(DE-Juel1)129170$$avon Hobe, Marc$$b2$$ufzj
000889377 7001_ $$0P:(DE-HGF)0$$aMarandino, C. A.$$b3
000889377 773__ $$0PERI:(DE-600)2458025-9$$a10.5194/essd-2020-389$$p389$$tEarth system science data discussions$$v2020$$x1866-3591$$y2020
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000889377 915__ $$0StatID:(DE-HGF)0030$$2StatID$$aPeer Review$$bASC$$d2020-08-22
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000889377 9141_ $$y2020
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