North Atlantic climate and deep-ocean flow speed changes during the last 230 years
Variations in the near-bottom flow speed of Iceland-Scotland Overflow Water (ISOW) are documented in a 230-year-long deep-sea sediment record from the eastern flank of Reykjanes Ridge in the subpolar North Atlantic at (sub)decadal time scales. For recent decades, the ISOW palaeocurrent reconstructio...
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Online Access: | http://eprints.esc.cam.ac.uk/152/ http://eprints.esc.cam.ac.uk/152/1/Elderfield_2007GL030285.pdf https://doi.org/10.1029/2007GL030285 |
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ftucambridgeesc:oai:eprints.esc.cam.ac.uk:152 2023-05-15T16:49:44+02:00 North Atlantic climate and deep-ocean flow speed changes during the last 230 years Boessenkool, K. P. Hall, I. R. Elderfield, H. Yashayaev, I. 2007-07 application/pdf http://eprints.esc.cam.ac.uk/152/ http://eprints.esc.cam.ac.uk/152/1/Elderfield_2007GL030285.pdf https://doi.org/10.1029/2007GL030285 en eng http://eprints.esc.cam.ac.uk/152/1/Elderfield_2007GL030285.pdf Boessenkool, K. P. and Hall, I. R. and Elderfield, H. and Yashayaev, I. (2007) North Atlantic climate and deep-ocean flow speed changes during the last 230 years. Geophysical Research Letters, 34 (13). L13614. ISSN 0094-8276 DOI https://doi.org/10.1029/2007GL030285 <https://doi.org/10.1029/2007GL030285> 01 - Climate Change and Earth-Ocean Atmosphere Systems Article PeerReviewed 2007 ftucambridgeesc https://doi.org/10.1029/2007GL030285 2020-08-27T18:08:25Z Variations in the near-bottom flow speed of Iceland-Scotland Overflow Water (ISOW) are documented in a 230-year-long deep-sea sediment record from the eastern flank of Reykjanes Ridge in the subpolar North Atlantic at (sub)decadal time scales. For recent decades, the ISOW palaeocurrent reconstructions show similarities with observational hydrographic data. Furthermore, recent ISOW flow changes fall mostly within the range of its variability of the past 230 years. The record also reveals a hitherto unrecognized coupling of deep flow speeds in the subpolar North Atlantic with the North Atlantic Oscillation (NAO) index, with more (less) vigorous ISOW flow during negative (positive) phases of the NAO. Our results suggest that the changes in ISOW vigor are largely controlled by the transport and characteristics of Labrador Sea Water rather than variations in the overflow itself, with implications for the meridional overturning of the Atlantic Ocean and climate. Article in Journal/Newspaper Iceland Labrador Sea North Atlantic North Atlantic oscillation University of Cambridge, Department of Earth Sciences: ESC Publications Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Geophysical Research Letters 34 13 n/a n/a |
institution |
Open Polar |
collection |
University of Cambridge, Department of Earth Sciences: ESC Publications |
op_collection_id |
ftucambridgeesc |
language |
English |
topic |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
spellingShingle |
01 - Climate Change and Earth-Ocean Atmosphere Systems Boessenkool, K. P. Hall, I. R. Elderfield, H. Yashayaev, I. North Atlantic climate and deep-ocean flow speed changes during the last 230 years |
topic_facet |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
description |
Variations in the near-bottom flow speed of Iceland-Scotland Overflow Water (ISOW) are documented in a 230-year-long deep-sea sediment record from the eastern flank of Reykjanes Ridge in the subpolar North Atlantic at (sub)decadal time scales. For recent decades, the ISOW palaeocurrent reconstructions show similarities with observational hydrographic data. Furthermore, recent ISOW flow changes fall mostly within the range of its variability of the past 230 years. The record also reveals a hitherto unrecognized coupling of deep flow speeds in the subpolar North Atlantic with the North Atlantic Oscillation (NAO) index, with more (less) vigorous ISOW flow during negative (positive) phases of the NAO. Our results suggest that the changes in ISOW vigor are largely controlled by the transport and characteristics of Labrador Sea Water rather than variations in the overflow itself, with implications for the meridional overturning of the Atlantic Ocean and climate. |
format |
Article in Journal/Newspaper |
author |
Boessenkool, K. P. Hall, I. R. Elderfield, H. Yashayaev, I. |
author_facet |
Boessenkool, K. P. Hall, I. R. Elderfield, H. Yashayaev, I. |
author_sort |
Boessenkool, K. P. |
title |
North Atlantic climate and deep-ocean flow speed changes during the last 230 years |
title_short |
North Atlantic climate and deep-ocean flow speed changes during the last 230 years |
title_full |
North Atlantic climate and deep-ocean flow speed changes during the last 230 years |
title_fullStr |
North Atlantic climate and deep-ocean flow speed changes during the last 230 years |
title_full_unstemmed |
North Atlantic climate and deep-ocean flow speed changes during the last 230 years |
title_sort |
north atlantic climate and deep-ocean flow speed changes during the last 230 years |
publishDate |
2007 |
url |
http://eprints.esc.cam.ac.uk/152/ http://eprints.esc.cam.ac.uk/152/1/Elderfield_2007GL030285.pdf https://doi.org/10.1029/2007GL030285 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Reykjanes |
geographic_facet |
Reykjanes |
genre |
Iceland Labrador Sea North Atlantic North Atlantic oscillation |
genre_facet |
Iceland Labrador Sea North Atlantic North Atlantic oscillation |
op_relation |
http://eprints.esc.cam.ac.uk/152/1/Elderfield_2007GL030285.pdf Boessenkool, K. P. and Hall, I. R. and Elderfield, H. and Yashayaev, I. (2007) North Atlantic climate and deep-ocean flow speed changes during the last 230 years. Geophysical Research Letters, 34 (13). L13614. ISSN 0094-8276 DOI https://doi.org/10.1029/2007GL030285 <https://doi.org/10.1029/2007GL030285> |
op_doi |
https://doi.org/10.1029/2007GL030285 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
13 |
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n/a |
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n/a |
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1766039935871090688 |