The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015
We 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, w...
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ftcopernicus:oai:publications.copernicus.org:bg60661 2023-05-15T14:28:52+02:00 The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 Jarníková, Tereza Dacey, John Lizotte, Martine Levasseur, Maurice Tortell, Philippe 2019-01-28 application/pdf https://doi.org/10.5194/bg-15-2449-2018 https://www.biogeosciences.net/15/2449/2018/ eng eng doi:10.5194/bg-15-2449-2018 https://www.biogeosciences.net/15/2449/2018/ eISSN: 1726-4189 Text 2019 ftcopernicus https://doi.org/10.5194/bg-15-2449-2018 2019-12-24T09:50:28Z We 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. Text Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Labrador Sea Phytoplankton Subarctic ice covered areas Copernicus Publications: E-Journals Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago Biogeosciences 15 8 2449 2465 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
We 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. |
format |
Text |
author |
Jarníková, Tereza Dacey, John Lizotte, Martine Levasseur, Maurice Tortell, Philippe |
spellingShingle |
Jarníková, Tereza Dacey, John Lizotte, Martine Levasseur, Maurice Tortell, Philippe The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
author_facet |
Jarníková, Tereza Dacey, John Lizotte, Martine Levasseur, Maurice Tortell, Philippe |
author_sort |
Jarníková, Tereza |
title |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_short |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_full |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_fullStr |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_full_unstemmed |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_sort |
distribution of methylated sulfur compounds, dms and dmsp, in canadian subarctic and arctic marine waters during summer 2015 |
publishDate |
2019 |
url |
https://doi.org/10.5194/bg-15-2449-2018 https://www.biogeosciences.net/15/2449/2018/ |
geographic |
Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago |
geographic_facet |
Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago |
genre |
Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Labrador Sea Phytoplankton Subarctic ice covered areas |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Labrador Sea Phytoplankton Subarctic ice covered areas |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-15-2449-2018 https://www.biogeosciences.net/15/2449/2018/ |
op_doi |
https://doi.org/10.5194/bg-15-2449-2018 |
container_title |
Biogeosciences |
container_volume |
15 |
container_issue |
8 |
container_start_page |
2449 |
op_container_end_page |
2465 |
_version_ |
1766303003518697472 |