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dc.contributor.authorAsher, Elizabeth C.  Concept link
dc.contributor.authorDacey, John W. H.  Concept link
dc.contributor.authorIanson, Debby  Concept link
dc.contributor.authorPena, Angelica  Concept link
dc.contributor.authorTortell, Philippe D.  Concept link
dc.date.accessioned2017-07-05T17:25:29Z
dc.date.available2017-10-24T08:15:54Z
dc.date.issued2017-04-24
dc.identifier.citationJournal of Geophysical Research: Oceans 122 (2017): 3269–3286en_US
dc.identifier.urihttps://hdl.handle.net/1912/9061
dc.descriptionAuthor Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 122 (2017): 3269–3286, doi:10.1002/2016JC012465.en_US
dc.description.abstractConcentrations of dimethylsulfide (DMS), measured in the Subarctic Pacific during summer 2010 and 2011, ranged from ∼1 to 40 nM, while dissolved dimethylsulfoxide (DMSO) concentrations (range 13-23 nM) exceeded those of dissolved dimethyl sulfoniopropionate (DMSP) (range 1.3–8.8 nM). Particulate DMSP dominated the reduced sulfur pool, reaching maximum concentrations of 100 nM. Coastal and off shore waters exhibited similar overall DMS concentration ranges, but sea-air DMS fluxes were lower in the oceanic waters due to lower wind speeds. Surface DMS concentrations showed statistically significant correlations with various hydrographic variables including the upwelling intensity (r2 = 0.52, p < 0.001) and the Chlorophyll a/mixed layer depth ratio (r2 = 0.52, p < 0.001), but these relationships provided little predictive power at small scales. Stable isotope tracer experiments indicated that the DMSP cleavage pathway always exceeded the DMSO reduction pathway as a DMS source, leading to at least 85% more DMS production in each experiment. Gross DMS production rates were positively correlated with the upwelling intensity, while net rates of DMS production were significantly correlated to surface water DMS concentrations. This latter result suggests that our measurements captured dominant processes driving surface DMS accumulation across a coastal-oceanic gradient.en_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada, from the Peter Wall Institute for Advanced Studiesen_US
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/2016JC012465
dc.subjectDimethylsulfideen_US
dc.subjectDMSPen_US
dc.subjectDMSOen_US
dc.subjectDMS turnoveren_US
dc.subjectRate measurementsen_US
dc.subjectIsotopic tracersen_US
dc.subjectSea-air fluxen_US
dc.subjectUpwellingen_US
dc.titleConcentrations and cycling of DMS, DMSP, and DMSO in coastal and offshore waters of the Subarctic Pacific during summer, 2010-2011en_US
dc.typeArticleen_US
dc.description.embargo2017-10-24en_US
dc.identifier.doi10.1002/2016JC012465


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