Northward oceanic heat transport in the main branch of the Norwegian Atlantic Current over the late Holocene
The Norwegian Atlantic Current represents the northernmost reaches of the (sub)surface limb of the Atlantic Meridional Overturning Circulation. Its shelf-edge branch, the Norwegian Atlantic Slope Current (NwASC), is of particular interest as it seems to be the main conduit for advected heat towards...
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crsagepubl:10.1177/0959683616683251 2023-05-15T15:07:58+02:00 Northward oceanic heat transport in the main branch of the Norwegian Atlantic Current over the late Holocene Tegzes, Andrea D Jansen, Eystein Lorentzen, Torbjørn Telford, Richard J Bjerknes Centre for Climate Research Research Council of Norway 2017 http://dx.doi.org/10.1177/0959683616683251 http://journals.sagepub.com/doi/pdf/10.1177/0959683616683251 http://journals.sagepub.com/doi/full-xml/10.1177/0959683616683251 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 27, issue 7, page 1034-1044 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2017 crsagepubl https://doi.org/10.1177/0959683616683251 2022-09-21T19:47:30Z The Norwegian Atlantic Current represents the northernmost reaches of the (sub)surface limb of the Atlantic Meridional Overturning Circulation. Its shelf-edge branch, the Norwegian Atlantic Slope Current (NwASC), is of particular interest as it seems to be the main conduit for advected heat towards the Arctic. The objective of this study was to investigate northward oceanic heat transport in the NwASC on longer, geologically meaningful time scales. To this end, we reconstructed variations in the strength of the NwASC over the late Holocene using the sortable-silt method. We then analysed the statistical relationship between our palaeo-flow reconstructions and published upper-ocean hydrography proxy records from the same location on the mid-Norwegian Margin. Our sortable-silt time series show prominent multi-decadal to multi-centennial variability, but no clear long-term trend over the past 4200 years. These records we thus interpret to represent perturbations in a relatively stable late-Holocene mean flow. Our in-depth statistical analysis indicates that upper-ocean temperatures at the mid-Norwegian Margin may have varied independently from the strength of the NwASC on multi-decadal to multi-centennial time scales over the past few millennia. Article in Journal/Newspaper Arctic SAGE Publications (via Crossref) Arctic The Holocene 27 7 1034 1044 |
institution |
Open Polar |
collection |
SAGE Publications (via Crossref) |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Tegzes, Andrea D Jansen, Eystein Lorentzen, Torbjørn Telford, Richard J Northward oceanic heat transport in the main branch of the Norwegian Atlantic Current over the late Holocene |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
The Norwegian Atlantic Current represents the northernmost reaches of the (sub)surface limb of the Atlantic Meridional Overturning Circulation. Its shelf-edge branch, the Norwegian Atlantic Slope Current (NwASC), is of particular interest as it seems to be the main conduit for advected heat towards the Arctic. The objective of this study was to investigate northward oceanic heat transport in the NwASC on longer, geologically meaningful time scales. To this end, we reconstructed variations in the strength of the NwASC over the late Holocene using the sortable-silt method. We then analysed the statistical relationship between our palaeo-flow reconstructions and published upper-ocean hydrography proxy records from the same location on the mid-Norwegian Margin. Our sortable-silt time series show prominent multi-decadal to multi-centennial variability, but no clear long-term trend over the past 4200 years. These records we thus interpret to represent perturbations in a relatively stable late-Holocene mean flow. Our in-depth statistical analysis indicates that upper-ocean temperatures at the mid-Norwegian Margin may have varied independently from the strength of the NwASC on multi-decadal to multi-centennial time scales over the past few millennia. |
author2 |
Bjerknes Centre for Climate Research Research Council of Norway |
format |
Article in Journal/Newspaper |
author |
Tegzes, Andrea D Jansen, Eystein Lorentzen, Torbjørn Telford, Richard J |
author_facet |
Tegzes, Andrea D Jansen, Eystein Lorentzen, Torbjørn Telford, Richard J |
author_sort |
Tegzes, Andrea D |
title |
Northward oceanic heat transport in the main branch of the Norwegian Atlantic Current over the late Holocene |
title_short |
Northward oceanic heat transport in the main branch of the Norwegian Atlantic Current over the late Holocene |
title_full |
Northward oceanic heat transport in the main branch of the Norwegian Atlantic Current over the late Holocene |
title_fullStr |
Northward oceanic heat transport in the main branch of the Norwegian Atlantic Current over the late Holocene |
title_full_unstemmed |
Northward oceanic heat transport in the main branch of the Norwegian Atlantic Current over the late Holocene |
title_sort |
northward oceanic heat transport in the main branch of the norwegian atlantic current over the late holocene |
publisher |
SAGE Publications |
publishDate |
2017 |
url |
http://dx.doi.org/10.1177/0959683616683251 http://journals.sagepub.com/doi/pdf/10.1177/0959683616683251 http://journals.sagepub.com/doi/full-xml/10.1177/0959683616683251 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
The Holocene volume 27, issue 7, page 1034-1044 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683616683251 |
container_title |
The Holocene |
container_volume |
27 |
container_issue |
7 |
container_start_page |
1034 |
op_container_end_page |
1044 |
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1766339391878332416 |