Arctic Ocean outflow shelves in the changing Arctic: A review and perspectives
Published version. Source at http://doi.org/10.1016/j.pocean.2015.08.007 . License in accordance with the journal's policy - CC-BY-NC-ND . Over the past decade or so, international research efforts, many of which were part of the International Polar Year, have accrued our understanding of the A...
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Online Access: | https://hdl.handle.net/10037/8803 https://doi.org/10.1016/j.pocean.2015.08.007 |
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ftunivtroemsoe:oai:munin.uit.no:10037/8803 2023-05-15T14:29:00+02:00 Arctic Ocean outflow shelves in the changing Arctic: A review and perspectives Michel, Christine Hamilton, J. Hansen, Edmond Barber, Dave Reigstad, Marit Iocozza, J Seuthe, Lena Niemi, Andrea 2015-08-28 https://hdl.handle.net/10037/8803 https://doi.org/10.1016/j.pocean.2015.08.007 eng eng Elsevier Norges forskningsråd: 226415 Progress in Oceanography 2015, 139:66-88 FRIDAID 1276537 doi:10.1016/j.pocean.2015.08.007 0079-6611 https://hdl.handle.net/10037/8803 URN:NBN:no-uit_munin_8365 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Journal article Tidsskriftartikkel Peer reviewed 2015 ftunivtroemsoe https://doi.org/10.1016/j.pocean.2015.08.007 2021-06-25T17:54:37Z Published version. Source at http://doi.org/10.1016/j.pocean.2015.08.007 . License in accordance with the journal's policy - CC-BY-NC-ND . Over the past decade or so, international research efforts, many of which were part of the International Polar Year, have accrued our understanding of the Arctic outflow shelves. The Arctic outflow shelves, namely the East Greenland Shelf (EGS) and the Canadian Arctic Archipelago (CAA), serve as conduits through which Arctic sea ice and waters and their properties are exported to the North Atlantic. These shelves play an important role in thermohaline circulation and global circulation patterns, while being influenced by basin-scale and regional changes taking place in the Arctic. Here, we synthesize the current knowledge on key forcings of primary production and ecosystem processes on the outflow shelves, as they influence their structure and functionalities and, consequently their role in Arctic Ocean productivity and global biogeochemical cycles. For the CAA, a fresh outlook on interannual and decadal physical and biological time-series reveals recent changes in productivity patterns, while an extensive analysis of sea ice conditions over the past 33 years (1980–2012) demonstrates significant declines in multi-year ice and a redistribution of ice types. For the EGS, our analysis shows that sea ice export strongly contributes to structuring spatially diverse productivity regimes. Despite the large heterogeneity in physical and biological processes within and between the outflow shelves, a conceptual model of productivity regimes is proposed, helping identify general productivity patterns and key forcings. The different productivity regimes are expected to respond differently to current and future Arctic change, providing a useful basis upon which to develop predictive scenarios of future productivity states. Current primary production estimates for both outflow shelves very likely underestimate their contribution to total Arctic production. Article in Journal/Newspaper Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago East Greenland Greenland International Polar Year North Atlantic Sea ice University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Canadian Arctic Archipelago Greenland Progress in Oceanography 139 66 88 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Michel, Christine Hamilton, J. Hansen, Edmond Barber, Dave Reigstad, Marit Iocozza, J Seuthe, Lena Niemi, Andrea Arctic Ocean outflow shelves in the changing Arctic: A review and perspectives |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
description |
Published version. Source at http://doi.org/10.1016/j.pocean.2015.08.007 . License in accordance with the journal's policy - CC-BY-NC-ND . Over the past decade or so, international research efforts, many of which were part of the International Polar Year, have accrued our understanding of the Arctic outflow shelves. The Arctic outflow shelves, namely the East Greenland Shelf (EGS) and the Canadian Arctic Archipelago (CAA), serve as conduits through which Arctic sea ice and waters and their properties are exported to the North Atlantic. These shelves play an important role in thermohaline circulation and global circulation patterns, while being influenced by basin-scale and regional changes taking place in the Arctic. Here, we synthesize the current knowledge on key forcings of primary production and ecosystem processes on the outflow shelves, as they influence their structure and functionalities and, consequently their role in Arctic Ocean productivity and global biogeochemical cycles. For the CAA, a fresh outlook on interannual and decadal physical and biological time-series reveals recent changes in productivity patterns, while an extensive analysis of sea ice conditions over the past 33 years (1980–2012) demonstrates significant declines in multi-year ice and a redistribution of ice types. For the EGS, our analysis shows that sea ice export strongly contributes to structuring spatially diverse productivity regimes. Despite the large heterogeneity in physical and biological processes within and between the outflow shelves, a conceptual model of productivity regimes is proposed, helping identify general productivity patterns and key forcings. The different productivity regimes are expected to respond differently to current and future Arctic change, providing a useful basis upon which to develop predictive scenarios of future productivity states. Current primary production estimates for both outflow shelves very likely underestimate their contribution to total Arctic production. |
format |
Article in Journal/Newspaper |
author |
Michel, Christine Hamilton, J. Hansen, Edmond Barber, Dave Reigstad, Marit Iocozza, J Seuthe, Lena Niemi, Andrea |
author_facet |
Michel, Christine Hamilton, J. Hansen, Edmond Barber, Dave Reigstad, Marit Iocozza, J Seuthe, Lena Niemi, Andrea |
author_sort |
Michel, Christine |
title |
Arctic Ocean outflow shelves in the changing Arctic: A review and perspectives |
title_short |
Arctic Ocean outflow shelves in the changing Arctic: A review and perspectives |
title_full |
Arctic Ocean outflow shelves in the changing Arctic: A review and perspectives |
title_fullStr |
Arctic Ocean outflow shelves in the changing Arctic: A review and perspectives |
title_full_unstemmed |
Arctic Ocean outflow shelves in the changing Arctic: A review and perspectives |
title_sort |
arctic ocean outflow shelves in the changing arctic: a review and perspectives |
publisher |
Elsevier |
publishDate |
2015 |
url |
https://hdl.handle.net/10037/8803 https://doi.org/10.1016/j.pocean.2015.08.007 |
geographic |
Arctic Arctic Ocean Canadian Arctic Archipelago Greenland |
geographic_facet |
Arctic Arctic Ocean Canadian Arctic Archipelago Greenland |
genre |
Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago East Greenland Greenland International Polar Year North Atlantic Sea ice |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago East Greenland Greenland International Polar Year North Atlantic Sea ice |
op_relation |
Norges forskningsråd: 226415 Progress in Oceanography 2015, 139:66-88 FRIDAID 1276537 doi:10.1016/j.pocean.2015.08.007 0079-6611 https://hdl.handle.net/10037/8803 URN:NBN:no-uit_munin_8365 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.pocean.2015.08.007 |
container_title |
Progress in Oceanography |
container_volume |
139 |
container_start_page |
66 |
op_container_end_page |
88 |
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1766303105666777088 |