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Marine carbonyl sulfide (OCS) and carbon disulfide (CS₂): a compilation of measurements in seawater and the marine boundary layer

Lookup NU author(s): Dr Guenther Uher

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

Carbonyl sulfide (OCS) and carbon disulfide (CS₂) are volatile sulfur gases that are naturally formed in seawater and exchanged with the atmosphere. OCS is the most abundant sulfur gas in the atmosphere, and CS₂ is its most important precursor. They have gained interest due to their direct (OCS) or indirect (CS₂ via oxidation to OCS) contribution to the stratospheric sulfate aerosol layer. Furthermore, OCS serves as a proxy to constrain terrestrial CO2 uptake by vegetation. Oceanic emissions of both gases contribute a major part to their atmospheric concentration. Here we present a database of previously published and unpublished, mainly ship-borne measurements in seawater and the marine boundary layer for both gases, available at https://doi.pangaea.de/10.1594/PANGAEA.905430 (Lennartz et al., 2019). The database contains original measurements as well as data digitalized from figures in publications from 42 measurement campaigns, i.e. cruises or time series stations, ranging from 1982 to 2019. OCS data cover all ocean basins except for the Arctic Ocean, as well as all months of the year, while the CS2 dataset shows large gaps in spatial and temporal coverage. Concentrations are consistent across different sampling and analysis techniques for OCS. The database is intended to support the identification of global spatial and temporal patterns and to facilitate the evaluation of model simulations.

Publication metadata

Author(s): Lennartz ST, Marandino CA, von Hobe M, Andreae MO, Aranami K, Atlas E, Berkelhammer M, Bingemer H, Booge D, Cutter G, Cortes P, Kremser S, Law C, Marriner A, Simó R, Quack B, Uher G, Xie H, Xu X

Publication type: Article

Publication status: Published

Journal: Earth System Science Data Discussions

Year: 2019

Issue: ePub ahead of Print

Online publication date: 09/10/2019

Acceptance date: 07/10/2019

Date deposited: 09/10/2019

ISSN (electronic): 1866-3591

Publisher: Copernicus GmbH

URL: https://doi.org/10.5194/essd-2019-162

DOI: 10.5194/essd-2019-162

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