Processes controlling dimethylsulfide over the ocean: Case studies using a 3-D model driven by assimilated meteorological fields

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dc.contributor.authorChin, Mian
dc.contributor.authorRood, Richard B.
dc.contributor.authorAllen, Dale J.
dc.contributor.authorAndreae, Meinrat O.
dc.contributor.authorThompson, Anne M.
dc.contributor.authorLin, Shian-Jiann
dc.contributor.authorAtlas, Robert M.
dc.contributor.authorArdizzone, Joseph V.
dc.date.accessioned2024-07-26T16:34:27Z
dc.date.available2024-07-26T16:34:27Z
dc.date.issued1998-04-01
dc.description.abstractThis study investigates the processes that influence dimethylsulfide (DMS) concentrations over the ocean using a global three-dimensional chemistry and transport model (CTM). The model is driven by assimilated meteorological data from the Goddard Earth Observing System Data Assimilation System (GEOS-I DAS). Results from the model are compared with DMS measurements from two marine sites, a ship cruise, and an aircraft campaign. When observed seawater DMS concentrations and meteorological conditions are used, the model reproduces the observed daily and diurnal variations of DMS concentrations at a tropical Pacific station. The model also predicts the observed changes of DMS concentrations across the Atlantic, although it overestimates the DMS level by a factor of 2. The calculated vertical DMS concentrations off Tasmania are more than 4 times higher than the measured data. The model simulates day-to-day fluctuations and interannual variations observed at Amsterdam Island but underpredicts the magnitude of the variations. Sensitivities for DMS concentrations to the parameters used in DMS emission, oxidation, boundary layer mixing, and cloud convective transport are tested. The limitations of the current model in interpreting the observations are due to (1) the uncertainties in parameterization of DMS emission from the ocean, (2) the simplistic boundary layer mixing scheme, (3) the inaccurate spatial distribution and intensity of deep convective clouds in the GEOS-I DAS, and (4) the uncertainties in DMS oxidation rates.
dc.description.sponsorshipWe wish to thank Shari Yvon-Lewis for providing her measurement data files and Ken Pickering and two anonymous r viewers for their helpful comments. This work was supported by the Universities Space Research Association Visiting Scientist Program at NASA Goddard Space Flight Center, NASA EOS IDS and ACMAP programs, and the NOAA Climate and Global Change Program.
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/98JD00107
dc.format.extent13 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2y2bb-c8bi
dc.identifier.citationChin, Mian, Richard B. Rood, Dale J. Allen, Meinrat O. Andreae, Anne M. Thompson, Shian-Jiann Lin, Robert M. Atlas, and Joseph V. Ardizzone. “Processes Controlling Dimethylsulfide over the Ocean: Case Studies Using a 3-D Model Driven by Assimilated Meteorological Fields.” Journal of Geophysical Research: Atmospheres 103, no. D7 (1998): 8341–53. https://doi.org/10.1029/98JD00107.
dc.identifier.urihttps://doi.org/10.1029/98JD00107
dc.identifier.urihttp://hdl.handle.net/11603/34980
dc.language.isoen_US
dc.publisherAGU
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology (JCET)
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rightsPublic Domain
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/
dc.titleProcesses controlling dimethylsulfide over the ocean: Case studies using a 3-D model driven by assimilated meteorological fields
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-7829-0920

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