North Atlantic ocean circulation and decadal sea level change during the Altimetry era
Regional sea-level rise is characterized by decadal acceleration and deceleration periods that typically stem from oceanic climate variability. Here, we investigate decadal sea-level trends during the altimetry era and pin down the associated ocean circulation changes. We find that decadal subpolar...
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Online Access: | https://hdl.handle.net/1956/22130 https://doi.org/10.1038/s41598-018-37603-6 |
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ftunivbergen:oai:bora.uib.no:1956/22130 2023-05-15T17:29:57+02:00 North Atlantic ocean circulation and decadal sea level change during the Altimetry era Chafik, Leon Martin Nilsen, Jan Even Øie Dangendorf, Sönke Reverdin, Gilles Frederikse, Thomas 2020-01-10T11:32:43Z application/pdf https://hdl.handle.net/1956/22130 https://doi.org/10.1038/s41598-018-37603-6 eng eng Springer Nature urn:issn:2045-2322 https://hdl.handle.net/1956/22130 https://doi.org/10.1038/s41598-018-37603-6 cristin:1696184 Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright 2019 The Author(s) Scientific Reports Peer reviewed Journal article 2020 ftunivbergen https://doi.org/10.1038/s41598-018-37603-6 2023-03-14T17:44:45Z Regional sea-level rise is characterized by decadal acceleration and deceleration periods that typically stem from oceanic climate variability. Here, we investigate decadal sea-level trends during the altimetry era and pin down the associated ocean circulation changes. We find that decadal subpolar gyre cooling (warming), strengthening (weakening), widening (shrinking) since the mid-2000s (early 1990s) resulted in negative (positive) sea level trends of −7.1 mm/yr ± 1.3 mm/yr (3.9 mm/yr ± 1.5 mm/yr). These large-scale changes further coincide with steric sea-level trends, and are driven by decadal-scale ocean circulation variability. Sea level on the European shelf, however, is found to correlate well with along-slope winds (R = 0.78), suggesting it plays a central role in driving the associated low-frequency dynamic sea level variability. Furthermore, when the North Atlantic is in a cooling (warming) period, the winds along the eastern boundary are predominantly from the North (South), which jointly drive a slowdown (rapid increase) in shelf and coastal sea level rise. Understanding the mechanisms that produce these connections may be critical for interpreting future regional sea-level trends. publishedVersion Article in Journal/Newspaper North Atlantic University of Bergen: Bergen Open Research Archive (BORA-UiB) Scientific Reports 9 1 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
Regional sea-level rise is characterized by decadal acceleration and deceleration periods that typically stem from oceanic climate variability. Here, we investigate decadal sea-level trends during the altimetry era and pin down the associated ocean circulation changes. We find that decadal subpolar gyre cooling (warming), strengthening (weakening), widening (shrinking) since the mid-2000s (early 1990s) resulted in negative (positive) sea level trends of −7.1 mm/yr ± 1.3 mm/yr (3.9 mm/yr ± 1.5 mm/yr). These large-scale changes further coincide with steric sea-level trends, and are driven by decadal-scale ocean circulation variability. Sea level on the European shelf, however, is found to correlate well with along-slope winds (R = 0.78), suggesting it plays a central role in driving the associated low-frequency dynamic sea level variability. Furthermore, when the North Atlantic is in a cooling (warming) period, the winds along the eastern boundary are predominantly from the North (South), which jointly drive a slowdown (rapid increase) in shelf and coastal sea level rise. Understanding the mechanisms that produce these connections may be critical for interpreting future regional sea-level trends. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Chafik, Leon Martin Nilsen, Jan Even Øie Dangendorf, Sönke Reverdin, Gilles Frederikse, Thomas |
spellingShingle |
Chafik, Leon Martin Nilsen, Jan Even Øie Dangendorf, Sönke Reverdin, Gilles Frederikse, Thomas North Atlantic ocean circulation and decadal sea level change during the Altimetry era |
author_facet |
Chafik, Leon Martin Nilsen, Jan Even Øie Dangendorf, Sönke Reverdin, Gilles Frederikse, Thomas |
author_sort |
Chafik, Leon Martin |
title |
North Atlantic ocean circulation and decadal sea level change during the Altimetry era |
title_short |
North Atlantic ocean circulation and decadal sea level change during the Altimetry era |
title_full |
North Atlantic ocean circulation and decadal sea level change during the Altimetry era |
title_fullStr |
North Atlantic ocean circulation and decadal sea level change during the Altimetry era |
title_full_unstemmed |
North Atlantic ocean circulation and decadal sea level change during the Altimetry era |
title_sort |
north atlantic ocean circulation and decadal sea level change during the altimetry era |
publisher |
Springer Nature |
publishDate |
2020 |
url |
https://hdl.handle.net/1956/22130 https://doi.org/10.1038/s41598-018-37603-6 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Scientific Reports |
op_relation |
urn:issn:2045-2322 https://hdl.handle.net/1956/22130 https://doi.org/10.1038/s41598-018-37603-6 cristin:1696184 |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright 2019 The Author(s) |
op_doi |
https://doi.org/10.1038/s41598-018-37603-6 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
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1766125189251203072 |