Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years
The subpolar North Atlantic Ocean (SPNA) is of key importance for modulating the climate of NW Europe because of heat loss to the atmosphere from the North Atlantic Current. Although hydrographic properties of the surface SPNA vary on interannual to multidecadal timescales, hydrographic time series...
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American Geophysical Union
2010
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:11093 2023-08-27T04:10:11+02:00 Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years Hall, Ian Robert Boessenkool, Karin Petra Barker, Stephen McCave, I. N. Elderfield, H. 2010-01-15 application/pdf https://orca.cardiff.ac.uk/id/eprint/11093/ https://doi.org/10.1029/2009PA001886 https://orca.cardiff.ac.uk/id/eprint/11093/1/Hall%202010.pdf en eng American Geophysical Union https://orca.cardiff.ac.uk/id/eprint/11093/1/Hall%202010.pdf Hall, Ian Robert https://orca.cardiff.ac.uk/view/cardiffauthors/A002402L.html orcid:0000-0001-6960-1419 orcid:0000-0001-6960-1419, Boessenkool, Karin Petra, Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431, McCave, I. N. and Elderfield, H. 2010. Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years. Paleoceanography 25 (2) , PA2101. 10.1029/2009PA001886 https://doi.org/10.1029/2009PA001886 file https://orca.cardiff.ac.uk/id/eprint/11093/1/Hall%202010.pdf doi:10.1029/2009PA001886 GC Oceanography QE Geology Article NonPeerReviewed 2010 ftunivcardiff https://doi.org/10.1029/2009PA001886 2023-08-10T22:33:33Z The subpolar North Atlantic Ocean (SPNA) is of key importance for modulating the climate of NW Europe because of heat loss to the atmosphere from the North Atlantic Current. Although hydrographic properties of the surface SPNA vary on interannual to multidecadal timescales, hydrographic time series scarcely extend back beyond the 1950s. We present a 230 year long record of SPNA surface conditions reconstructed from a very high accumulation rate core that also registers changes in deep flow speed in the Iceland Basin. A lagged correlation is observed between the records of deep flow speed and stable oxygen isotopic composition of the surface SPNA (d18Ow), with strongest correlation when the paleoflow speed record leads by 15–20 years. This offset may to some extent reflect size‐selective biological mixing of the sediment. Nonetheless, these records reveal a decadal‐scale coupling between surface and deep ocean variability over the past 230 years, possibly driven by the North Atlantic Oscillation, with implications for North Atlantic circulation and climate. Article in Journal/Newspaper Iceland north atlantic current North Atlantic North Atlantic oscillation Cardiff University: ORCA (Online Research @ Cardiff) Paleoceanography 25 2 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
topic |
GC Oceanography QE Geology |
spellingShingle |
GC Oceanography QE Geology Hall, Ian Robert Boessenkool, Karin Petra Barker, Stephen McCave, I. N. Elderfield, H. Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years |
topic_facet |
GC Oceanography QE Geology |
description |
The subpolar North Atlantic Ocean (SPNA) is of key importance for modulating the climate of NW Europe because of heat loss to the atmosphere from the North Atlantic Current. Although hydrographic properties of the surface SPNA vary on interannual to multidecadal timescales, hydrographic time series scarcely extend back beyond the 1950s. We present a 230 year long record of SPNA surface conditions reconstructed from a very high accumulation rate core that also registers changes in deep flow speed in the Iceland Basin. A lagged correlation is observed between the records of deep flow speed and stable oxygen isotopic composition of the surface SPNA (d18Ow), with strongest correlation when the paleoflow speed record leads by 15–20 years. This offset may to some extent reflect size‐selective biological mixing of the sediment. Nonetheless, these records reveal a decadal‐scale coupling between surface and deep ocean variability over the past 230 years, possibly driven by the North Atlantic Oscillation, with implications for North Atlantic circulation and climate. |
format |
Article in Journal/Newspaper |
author |
Hall, Ian Robert Boessenkool, Karin Petra Barker, Stephen McCave, I. N. Elderfield, H. |
author_facet |
Hall, Ian Robert Boessenkool, Karin Petra Barker, Stephen McCave, I. N. Elderfield, H. |
author_sort |
Hall, Ian Robert |
title |
Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years |
title_short |
Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years |
title_full |
Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years |
title_fullStr |
Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years |
title_full_unstemmed |
Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years |
title_sort |
surface and deep ocean coupling in the subpolar north atlantic during the last 230 years |
publisher |
American Geophysical Union |
publishDate |
2010 |
url |
https://orca.cardiff.ac.uk/id/eprint/11093/ https://doi.org/10.1029/2009PA001886 https://orca.cardiff.ac.uk/id/eprint/11093/1/Hall%202010.pdf |
genre |
Iceland north atlantic current North Atlantic North Atlantic oscillation |
genre_facet |
Iceland north atlantic current North Atlantic North Atlantic oscillation |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/11093/1/Hall%202010.pdf Hall, Ian Robert https://orca.cardiff.ac.uk/view/cardiffauthors/A002402L.html orcid:0000-0001-6960-1419 orcid:0000-0001-6960-1419, Boessenkool, Karin Petra, Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431, McCave, I. N. and Elderfield, H. 2010. Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years. Paleoceanography 25 (2) , PA2101. 10.1029/2009PA001886 https://doi.org/10.1029/2009PA001886 file https://orca.cardiff.ac.uk/id/eprint/11093/1/Hall%202010.pdf doi:10.1029/2009PA001886 |
op_doi |
https://doi.org/10.1029/2009PA001886 |
container_title |
Paleoceanography |
container_volume |
25 |
container_issue |
2 |
_version_ |
1775352029743415296 |