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dc.contributor.authorJarníková, Tereza  Concept link
dc.contributor.authorDacey, John W. H.  Concept link
dc.contributor.authorLizotte, Martine  Concept link
dc.contributor.authorLevasseur, Maurice  Concept link
dc.contributor.authorTortell, Philippe D.  Concept link
dc.date.accessioned2018-05-09T14:37:36Z
dc.date.available2018-05-09T14:37:36Z
dc.date.issued2018-04-23
dc.identifier.citationBiogeosciences 15 (2018): 2449–2465en_US
dc.identifier.urihttps://hdl.handle.net/1912/10333
dc.description© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Biogeosciences 15 (2018): 2449–2465, doi:10.5194/bg-15-2449-2018.en_US
dc.description.abstractWe present seawater concentrations of dimethyl sulfide (DMS) and dimethylsulfoniopropionate (DMSP) measured across a transect from the Labrador Sea to the Canadian Arctic Archipelago during summer 2015. Using an automated ship-board gas chromatography system and a membrane-inlet mass spectrometer, we measured a wide range of DMS (∼ 1 to 18 nM) and DMSP (∼ 1 to 150 nM) concentrations. The highest DMS and DMSP concentrations occurred in a localized region of Baffin Bay, where surface waters were characterized by high chlorophyll a (chl a) fluorescence, indicative of elevated phytoplankton biomass. Across the full sampling transect, there were only weak relationships between DMS(P), chl a fluorescence and other measured variables, including positive relationships between DMSP : chl a ratios and several taxonomic marker pigments, and elevated DMS(P) concentrations in partially ice-covered areas. Our high spatial resolution measurements allowed us to examine DMS variability over small scales (< 1 km), documenting strong DMS concentration gradients across surface hydrographic frontal features. Our new observations fill in an important observational gap in the Arctic Ocean and provide additional information on sea–air DMS fluxes from this ocean region. In addition, this study constitutes a significant contribution to the existing Arctic DMS(P) dataset and provides a baseline for future measurements in the region.en_US
dc.description.sponsorshipThis work was supported by grants from the Natural Sciences and Engineering Research Council of Canada (NSERC) through the Climate Change and Atmospheric Research program (Arctic-GEOTRACES).en_US
dc.language.isoen_USen_US
dc.publisherCopernicus Publications on behalf of the European Geosciences Unionen_US
dc.relation.urihttps://doi.org/10.5194/bg-15-2449-2018
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleThe distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015en_US
dc.typeArticleen_US
dc.identifier.doi10.5194/bg-15-2449-2018


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International