Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean)
The concentration of greenhouse gases, including nitrous oxide (N2O), methane (CH4), and compounds such as total dimethylsulfoniopropionate (DMSPt), along with other oceanographic variables were measured in the icecovered Arctic Ocean within the Eurasian Basin (EAB). The EAB is affected by the peren...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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2016
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Online Access: | https://epic.awi.de/id/eprint/42097/ https://epic.awi.de/id/eprint/42097/1/Verdugoetal2016.pdf https://doi.org/10.1016/j.dsr.2016.08.016 https://hdl.handle.net/10013/epic.49402 https://hdl.handle.net/10013/epic.49402.d001 |
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ftawi:oai:epic.awi.de:42097 2024-09-15T17:38:50+00:00 Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) Verdugo, Maria Josefa Damm, Ellen Snoeijs, Pauline Diez, Beatrize Farias, Laura 2016 application/pdf https://epic.awi.de/id/eprint/42097/ https://epic.awi.de/id/eprint/42097/1/Verdugoetal2016.pdf https://doi.org/10.1016/j.dsr.2016.08.016 https://hdl.handle.net/10013/epic.49402 https://hdl.handle.net/10013/epic.49402.d001 unknown PERGAMON-ELSEVIER SCIENCE LTD https://epic.awi.de/id/eprint/42097/1/Verdugoetal2016.pdf https://hdl.handle.net/10013/epic.49402.d001 Verdugo, M. J. , Damm, E. orcid:0000-0002-1487-1283 , Snoeijs, P. , Diez, B. and Farias, L. (2016) Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) , Deep-Sea Research Part I-Oceanographic Research Papers, 117 , pp. 84-94 . doi:10.1016/j.dsr.2016.08.016 <https://doi.org/10.1016/j.dsr.2016.08.016> , hdl:10013/epic.49402 EPIC3Deep-Sea Research Part I-Oceanographic Research Papers, PERGAMON-ELSEVIER SCIENCE LTD, 117, pp. 84-94, ISSN: 0967-0637 Article isiRev 2016 ftawi https://doi.org/10.1016/j.dsr.2016.08.016 2024-06-24T04:15:36Z The concentration of greenhouse gases, including nitrous oxide (N2O), methane (CH4), and compounds such as total dimethylsulfoniopropionate (DMSPt), along with other oceanographic variables were measured in the icecovered Arctic Ocean within the Eurasian Basin (EAB). The EAB is affected by the perennial ice-pack and has seasonal microalgal blooms, which in turn may stimulate microbes involved in trace gas cycling. Data collection was carried out on board the LOMROG III cruise during the boreal summer of 2012. Water samples were collected from the surface to the bottom layer (reaching 4300 m depth) along a South-North transect (SNT), from 82.19°N, 8.75°E to 89.26°N, 58.84°W, crossing the EAB through the Nansen and Amundsen Basins. The Polar Mixed Layer and halocline waters along the SNT showed a heterogeneous distribution of N2O, CH4 and DMSPt, fluctuating between 42-111 and 27–649% saturation for N2O and CH4, respectively; and from 3.5 to 58.9 nmol L−1 for DMSPt. Spatial patterns revealed that while CH4 and DMSPt peaked in the Nansen Basin, N2O was higher in the Amundsen Basin. In the Atlantic Intermediate Water and Arctic Deep Water N2O and CH4 distributions were also heterogeneous with saturations between 52% and 106% and 28% and 340%, respectively. Remarkably, the Amundsen Basin contained less CH4 than the Nansen Basin and while both basins were mostly under-saturated in N2O. We propose that part of the CH4 and N2O may be microbiologically consumed via methanotrophy, denitrification, or even diazotrophy, as intermediate and deep waters move throughout EAB associated with the overturning water mass circulation. This study contributes to baseline information on gas distribution in a region that is increasingly subject to rapid environmental changes, and that has an important role on global ocean circulation and climate regulation. Article in Journal/Newspaper amundsen basin Arctic Arctic Ocean Nansen Basin Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Deep Sea Research Part I: Oceanographic Research Papers 117 84 94 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The concentration of greenhouse gases, including nitrous oxide (N2O), methane (CH4), and compounds such as total dimethylsulfoniopropionate (DMSPt), along with other oceanographic variables were measured in the icecovered Arctic Ocean within the Eurasian Basin (EAB). The EAB is affected by the perennial ice-pack and has seasonal microalgal blooms, which in turn may stimulate microbes involved in trace gas cycling. Data collection was carried out on board the LOMROG III cruise during the boreal summer of 2012. Water samples were collected from the surface to the bottom layer (reaching 4300 m depth) along a South-North transect (SNT), from 82.19°N, 8.75°E to 89.26°N, 58.84°W, crossing the EAB through the Nansen and Amundsen Basins. The Polar Mixed Layer and halocline waters along the SNT showed a heterogeneous distribution of N2O, CH4 and DMSPt, fluctuating between 42-111 and 27–649% saturation for N2O and CH4, respectively; and from 3.5 to 58.9 nmol L−1 for DMSPt. Spatial patterns revealed that while CH4 and DMSPt peaked in the Nansen Basin, N2O was higher in the Amundsen Basin. In the Atlantic Intermediate Water and Arctic Deep Water N2O and CH4 distributions were also heterogeneous with saturations between 52% and 106% and 28% and 340%, respectively. Remarkably, the Amundsen Basin contained less CH4 than the Nansen Basin and while both basins were mostly under-saturated in N2O. We propose that part of the CH4 and N2O may be microbiologically consumed via methanotrophy, denitrification, or even diazotrophy, as intermediate and deep waters move throughout EAB associated with the overturning water mass circulation. This study contributes to baseline information on gas distribution in a region that is increasingly subject to rapid environmental changes, and that has an important role on global ocean circulation and climate regulation. |
format |
Article in Journal/Newspaper |
author |
Verdugo, Maria Josefa Damm, Ellen Snoeijs, Pauline Diez, Beatrize Farias, Laura |
spellingShingle |
Verdugo, Maria Josefa Damm, Ellen Snoeijs, Pauline Diez, Beatrize Farias, Laura Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) |
author_facet |
Verdugo, Maria Josefa Damm, Ellen Snoeijs, Pauline Diez, Beatrize Farias, Laura |
author_sort |
Verdugo, Maria Josefa |
title |
Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) |
title_short |
Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) |
title_full |
Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) |
title_fullStr |
Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) |
title_full_unstemmed |
Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) |
title_sort |
climate relevant trace gases (n2o and ch4) in the eurasian basin (arctic ocean) |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/42097/ https://epic.awi.de/id/eprint/42097/1/Verdugoetal2016.pdf https://doi.org/10.1016/j.dsr.2016.08.016 https://hdl.handle.net/10013/epic.49402 https://hdl.handle.net/10013/epic.49402.d001 |
genre |
amundsen basin Arctic Arctic Ocean Nansen Basin |
genre_facet |
amundsen basin Arctic Arctic Ocean Nansen Basin |
op_source |
EPIC3Deep-Sea Research Part I-Oceanographic Research Papers, PERGAMON-ELSEVIER SCIENCE LTD, 117, pp. 84-94, ISSN: 0967-0637 |
op_relation |
https://epic.awi.de/id/eprint/42097/1/Verdugoetal2016.pdf https://hdl.handle.net/10013/epic.49402.d001 Verdugo, M. J. , Damm, E. orcid:0000-0002-1487-1283 , Snoeijs, P. , Diez, B. and Farias, L. (2016) Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) , Deep-Sea Research Part I-Oceanographic Research Papers, 117 , pp. 84-94 . doi:10.1016/j.dsr.2016.08.016 <https://doi.org/10.1016/j.dsr.2016.08.016> , hdl:10013/epic.49402 |
op_doi |
https://doi.org/10.1016/j.dsr.2016.08.016 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
117 |
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84 |
op_container_end_page |
94 |
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