Direct measurements of DMS flux from Antarctic fast sea ice to the atmosphere by a chamber technique
We present the first direct measurements of dimethylsulfide (DMS) emissions from Antarctic sea ice to the atmosphere during the seasonal warming period obtained using a chamber technique. Estimated DMS fluxes measured over the snow and superimposed ice (ice formed by the freezing of snow meltwater)...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | http://hdl.handle.net/2115/70582 https://doi.org/10.1029/2010JC006755 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/70582 2023-05-15T13:51:33+02:00 Direct measurements of DMS flux from Antarctic fast sea ice to the atmosphere by a chamber technique Nomura, Daiki Koga, Seizi Kasamatsu, Nobue Shinagawa, Hideo Simizu, Daisuke Wada, Makoto Fukuchi, Mitsuo http://hdl.handle.net/2115/70582 https://doi.org/10.1029/2010JC006755 eng eng Wiley http://hdl.handle.net/2115/70582 Journal of Geophysical Research : Oceans, 117(C4): C04011 http://dx.doi.org/10.1029/2010JC006755 © 2012 American Geophysical Union DMS Southern Ocean chamber method flux sea ice slush layer 660 article fthokunivhus https://doi.org/10.1029/2010JC006755 2022-11-18T01:04:56Z We present the first direct measurements of dimethylsulfide (DMS) emissions from Antarctic sea ice to the atmosphere during the seasonal warming period obtained using a chamber technique. Estimated DMS fluxes measured over the snow and superimposed ice (ice formed by the freezing of snow meltwater) were from 0.1 to 0.3 μmol m−2 d−1. The DMS fluxes measured directly over the sea‐ice slush layer after removal of the snow and superimposed ice, ranged from 0.1 to 5.3 μmol m−2 d−1, were large compared to those measured over the snow and superimposed ice. The DMS concentrations in slush water ranged from 1.0 to 103.7 nM. The DMS fluxes increased with increasing DMS concentrations in slush water. Our results indicate that the potential DMS flux measured over the slush layer occurred originally from the slush layer, and was dependent on the DMS concentrations in slush water. However, snow accumulation and the formation of superimposed ice over the slush layer significantly blocks the diffusion of DMS to the atmosphere, with the result that DMS tends to accumulate in the slush layer although the removal process of DMS by photolysis reaction can modify the DMS flux from the slush layer. Hence, the slush layer has the potential to release the DMS to the atmosphere and ocean when the snow and superimposed ice melts. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Antarctic Southern Ocean Journal of Geophysical Research: Oceans 117 C4 n/a n/a |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
DMS Southern Ocean chamber method flux sea ice slush layer 660 |
spellingShingle |
DMS Southern Ocean chamber method flux sea ice slush layer 660 Nomura, Daiki Koga, Seizi Kasamatsu, Nobue Shinagawa, Hideo Simizu, Daisuke Wada, Makoto Fukuchi, Mitsuo Direct measurements of DMS flux from Antarctic fast sea ice to the atmosphere by a chamber technique |
topic_facet |
DMS Southern Ocean chamber method flux sea ice slush layer 660 |
description |
We present the first direct measurements of dimethylsulfide (DMS) emissions from Antarctic sea ice to the atmosphere during the seasonal warming period obtained using a chamber technique. Estimated DMS fluxes measured over the snow and superimposed ice (ice formed by the freezing of snow meltwater) were from 0.1 to 0.3 μmol m−2 d−1. The DMS fluxes measured directly over the sea‐ice slush layer after removal of the snow and superimposed ice, ranged from 0.1 to 5.3 μmol m−2 d−1, were large compared to those measured over the snow and superimposed ice. The DMS concentrations in slush water ranged from 1.0 to 103.7 nM. The DMS fluxes increased with increasing DMS concentrations in slush water. Our results indicate that the potential DMS flux measured over the slush layer occurred originally from the slush layer, and was dependent on the DMS concentrations in slush water. However, snow accumulation and the formation of superimposed ice over the slush layer significantly blocks the diffusion of DMS to the atmosphere, with the result that DMS tends to accumulate in the slush layer although the removal process of DMS by photolysis reaction can modify the DMS flux from the slush layer. Hence, the slush layer has the potential to release the DMS to the atmosphere and ocean when the snow and superimposed ice melts. |
format |
Article in Journal/Newspaper |
author |
Nomura, Daiki Koga, Seizi Kasamatsu, Nobue Shinagawa, Hideo Simizu, Daisuke Wada, Makoto Fukuchi, Mitsuo |
author_facet |
Nomura, Daiki Koga, Seizi Kasamatsu, Nobue Shinagawa, Hideo Simizu, Daisuke Wada, Makoto Fukuchi, Mitsuo |
author_sort |
Nomura, Daiki |
title |
Direct measurements of DMS flux from Antarctic fast sea ice to the atmosphere by a chamber technique |
title_short |
Direct measurements of DMS flux from Antarctic fast sea ice to the atmosphere by a chamber technique |
title_full |
Direct measurements of DMS flux from Antarctic fast sea ice to the atmosphere by a chamber technique |
title_fullStr |
Direct measurements of DMS flux from Antarctic fast sea ice to the atmosphere by a chamber technique |
title_full_unstemmed |
Direct measurements of DMS flux from Antarctic fast sea ice to the atmosphere by a chamber technique |
title_sort |
direct measurements of dms flux from antarctic fast sea ice to the atmosphere by a chamber technique |
publisher |
Wiley |
url |
http://hdl.handle.net/2115/70582 https://doi.org/10.1029/2010JC006755 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
http://hdl.handle.net/2115/70582 Journal of Geophysical Research : Oceans, 117(C4): C04011 http://dx.doi.org/10.1029/2010JC006755 |
op_rights |
© 2012 American Geophysical Union |
op_doi |
https://doi.org/10.1029/2010JC006755 |
container_title |
Journal of Geophysical Research: Oceans |
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117 |
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C4 |
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1766255451805057024 |