The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard
The Arctic Ocean north of Svalbard has recently experienced large sea ice losses and the increasing prominence of Atlantic water (AW) advection. To investigate the impact of these ongoing changes on annual particle export, two moorings with sequential sediment traps were deployed in ice-free and sea...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://hdl.handle.net/10037/27145 https://doi.org/10.1029/2022JC018897 |
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ftunivtroemsoe:oai:munin.uit.no:10037/27145 2023-12-24T10:12:10+01:00 The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard Dybwad, Christine Schumann Lalande, Catherine Bodur, Yasemin V. Henley, Sean Cottier, Finlo Robert Ershova, Elizaveta Hobbs, Laura Last, Kim S. Dabrowska, Anna Maria Reigstad, Marit 2022-10-04 https://hdl.handle.net/10037/27145 https://doi.org/10.1029/2022JC018897 eng eng Wiley Dybwad, C. (2023). Vertical Carbon Export in a Changing Arctic Seasonal Ice Zone: Composition and seasonality in the area north of Svalbard and in an Arctic glacial fjord. (Doctoral thesis). https://hdl.handle.net/10037/31883 Journal of Geophysical Research (JGR): Oceans Dybwad C, Lalande C, Bodur YV, Henley S, Cottier FR, Ershova E, Hobbs L, Last KS, Dabrowska AM, Reigstad M. The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard. Journal of Geophysical Research (JGR): Oceans. 2022;127(10) FRIDAID 2060672 doi:10.1029/2022JC018897 2169-9275 2169-9291 https://hdl.handle.net/10037/27145 Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2022 The Author(s) https://creativecommons.org/licenses/by/4.0 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.1029/2022JC018897 2023-11-30T00:08:24Z The Arctic Ocean north of Svalbard has recently experienced large sea ice losses and the increasing prominence of Atlantic water (AW) advection. To investigate the impact of these ongoing changes on annual particle export, two moorings with sequential sediment traps were deployed in ice-free and seasonally ice-covered waters on the shelf north (NSv) and east (ESv) of Svalbard, collecting sinking particles nearly continuously from October 2017 to October 2018. Vertical export of particulate organic carbon (POC), total particulate matter (TPM), planktonic protists, chlorophyll a, and zooplankton fecal pellets were measured, and swimmers were quantified and identified. Combined with sensor data from the moorings, these time-series measurements provided a first assessment of the factors influencing particle export in this region of the Arctic Ocean. Higher annual TPM and POC fluxes at the ice-free NSv site were primarily driven by the advection of AW, higher grazing by large copepods, and a wind-induced mixing event during winter. Higher diatom fluxes were observed during spring in the presence of sea ice at the ESv site. Along with sea ice cover, regional differences in AW advection and the seasonal presence of grazers played a prominent role in the biological carbon pump along the continental shelf off Svalbard. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Sea ice Svalbard Zooplankton Copepods ice covered waters University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Svalbard Journal of Geophysical Research: Oceans 127 10 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
The Arctic Ocean north of Svalbard has recently experienced large sea ice losses and the increasing prominence of Atlantic water (AW) advection. To investigate the impact of these ongoing changes on annual particle export, two moorings with sequential sediment traps were deployed in ice-free and seasonally ice-covered waters on the shelf north (NSv) and east (ESv) of Svalbard, collecting sinking particles nearly continuously from October 2017 to October 2018. Vertical export of particulate organic carbon (POC), total particulate matter (TPM), planktonic protists, chlorophyll a, and zooplankton fecal pellets were measured, and swimmers were quantified and identified. Combined with sensor data from the moorings, these time-series measurements provided a first assessment of the factors influencing particle export in this region of the Arctic Ocean. Higher annual TPM and POC fluxes at the ice-free NSv site were primarily driven by the advection of AW, higher grazing by large copepods, and a wind-induced mixing event during winter. Higher diatom fluxes were observed during spring in the presence of sea ice at the ESv site. Along with sea ice cover, regional differences in AW advection and the seasonal presence of grazers played a prominent role in the biological carbon pump along the continental shelf off Svalbard. |
format |
Article in Journal/Newspaper |
author |
Dybwad, Christine Schumann Lalande, Catherine Bodur, Yasemin V. Henley, Sean Cottier, Finlo Robert Ershova, Elizaveta Hobbs, Laura Last, Kim S. Dabrowska, Anna Maria Reigstad, Marit |
spellingShingle |
Dybwad, Christine Schumann Lalande, Catherine Bodur, Yasemin V. Henley, Sean Cottier, Finlo Robert Ershova, Elizaveta Hobbs, Laura Last, Kim S. Dabrowska, Anna Maria Reigstad, Marit The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard |
author_facet |
Dybwad, Christine Schumann Lalande, Catherine Bodur, Yasemin V. Henley, Sean Cottier, Finlo Robert Ershova, Elizaveta Hobbs, Laura Last, Kim S. Dabrowska, Anna Maria Reigstad, Marit |
author_sort |
Dybwad, Christine Schumann |
title |
The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard |
title_short |
The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard |
title_full |
The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard |
title_fullStr |
The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard |
title_full_unstemmed |
The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard |
title_sort |
influence of sea ice cover and atlantic water advection on annual particle export north of svalbard |
publisher |
Wiley |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/27145 https://doi.org/10.1029/2022JC018897 |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Arctic Ocean Sea ice Svalbard Zooplankton Copepods ice covered waters |
genre_facet |
Arctic Arctic Arctic Ocean Sea ice Svalbard Zooplankton Copepods ice covered waters |
op_relation |
Dybwad, C. (2023). Vertical Carbon Export in a Changing Arctic Seasonal Ice Zone: Composition and seasonality in the area north of Svalbard and in an Arctic glacial fjord. (Doctoral thesis). https://hdl.handle.net/10037/31883 Journal of Geophysical Research (JGR): Oceans Dybwad C, Lalande C, Bodur YV, Henley S, Cottier FR, Ershova E, Hobbs L, Last KS, Dabrowska AM, Reigstad M. The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard. Journal of Geophysical Research (JGR): Oceans. 2022;127(10) FRIDAID 2060672 doi:10.1029/2022JC018897 2169-9275 2169-9291 https://hdl.handle.net/10037/27145 |
op_rights |
Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2022 The Author(s) https://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.1029/2022JC018897 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
127 |
container_issue |
10 |
_version_ |
1786172964676304896 |