Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean
Northward ocean heat transport at 26°N in the Atlantic has been measured since 2004. The ocean heat transport is large, about 1.25PW, and on interannual time scales it exhibits surprisingly large temporal variability. There has been a long-term reduction in ocean heat transport of 0.17 PW from 1.32...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/526135/ https://nora.nerc.ac.uk/id/eprint/526135/1/jcli-d-19-0323.1.pdf https://nora.nerc.ac.uk/id/eprint/526135/7/jcli-d-19-0323.1%20%281%29.pdf https://doi.org/10.1175/JCLI-D-19-0323.1 |
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ftnerc:oai:nora.nerc.ac.uk:526135 2023-05-15T16:47:58+02:00 Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean Bryden, Harry L. Johns, William E. King, Brian A. McCarthy, Gerard McDonagh, Elaine L. Moat, Ben I. Smeed, David A. 2020-01-24 text http://nora.nerc.ac.uk/id/eprint/526135/ https://nora.nerc.ac.uk/id/eprint/526135/1/jcli-d-19-0323.1.pdf https://nora.nerc.ac.uk/id/eprint/526135/7/jcli-d-19-0323.1%20%281%29.pdf https://doi.org/10.1175/JCLI-D-19-0323.1 en eng https://nora.nerc.ac.uk/id/eprint/526135/1/jcli-d-19-0323.1.pdf https://nora.nerc.ac.uk/id/eprint/526135/7/jcli-d-19-0323.1%20%281%29.pdf Bryden, Harry L.; Johns, William E.; King, Brian A. orcid:0000-0003-1338-3234 McCarthy, Gerard; McDonagh, Elaine L.; Moat, Ben I. orcid:0000-0001-8676-7779 Smeed, David A. orcid:0000-0003-1740-1778 . 2020 Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean. Journal of Climate, 33 (5). 1677-1689. https://doi.org/10.1175/JCLI-D-19-0323.1 <https://doi.org/10.1175/JCLI-D-19-0323.1> Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.1175/JCLI-D-19-0323.1 2023-02-04T19:49:47Z Northward ocean heat transport at 26°N in the Atlantic has been measured since 2004. The ocean heat transport is large, about 1.25PW, and on interannual time scales it exhibits surprisingly large temporal variability. There has been a long-term reduction in ocean heat transport of 0.17 PW from 1.32 PW before 2009 to 1.15 PW after 2009 (2009-2016) on an annual average basis associated with a 2.5 Sv drop in the AMOC (Atlantic Meridional Overturning Circulation). The reduction in the AMOC has cooled and freshened the upper ocean north of 26°N over an area following the offshore edge of the Gulf Stream/North Atlantic Current from the Bahamas to Iceland. Cooling peaks south of Iceland where surface temperatures are as much as 2°C cooler in 2016 than they were in 2008. Heat uptake by the atmosphere appears to have been affected particularly along the path of the North Atlantic Current. For the reduction in ocean heat transport, changes in ocean heat content account for about one-quarter of the long-term reduction in ocean heat transport while reduced heat uptake by the atmosphere appears to account for the remainder of the change in ocean heat transport Article in Journal/Newspaper Iceland north atlantic current North Atlantic Natural Environment Research Council: NERC Open Research Archive Journal of Climate 33 5 1677 1689 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Northward ocean heat transport at 26°N in the Atlantic has been measured since 2004. The ocean heat transport is large, about 1.25PW, and on interannual time scales it exhibits surprisingly large temporal variability. There has been a long-term reduction in ocean heat transport of 0.17 PW from 1.32 PW before 2009 to 1.15 PW after 2009 (2009-2016) on an annual average basis associated with a 2.5 Sv drop in the AMOC (Atlantic Meridional Overturning Circulation). The reduction in the AMOC has cooled and freshened the upper ocean north of 26°N over an area following the offshore edge of the Gulf Stream/North Atlantic Current from the Bahamas to Iceland. Cooling peaks south of Iceland where surface temperatures are as much as 2°C cooler in 2016 than they were in 2008. Heat uptake by the atmosphere appears to have been affected particularly along the path of the North Atlantic Current. For the reduction in ocean heat transport, changes in ocean heat content account for about one-quarter of the long-term reduction in ocean heat transport while reduced heat uptake by the atmosphere appears to account for the remainder of the change in ocean heat transport |
format |
Article in Journal/Newspaper |
author |
Bryden, Harry L. Johns, William E. King, Brian A. McCarthy, Gerard McDonagh, Elaine L. Moat, Ben I. Smeed, David A. |
spellingShingle |
Bryden, Harry L. Johns, William E. King, Brian A. McCarthy, Gerard McDonagh, Elaine L. Moat, Ben I. Smeed, David A. Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean |
author_facet |
Bryden, Harry L. Johns, William E. King, Brian A. McCarthy, Gerard McDonagh, Elaine L. Moat, Ben I. Smeed, David A. |
author_sort |
Bryden, Harry L. |
title |
Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean |
title_short |
Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean |
title_full |
Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean |
title_fullStr |
Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean |
title_full_unstemmed |
Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean |
title_sort |
reduction in ocean heat transport at 26°n since 2008 cools the eastern subpolar gyre of the north atlantic ocean |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/526135/ https://nora.nerc.ac.uk/id/eprint/526135/1/jcli-d-19-0323.1.pdf https://nora.nerc.ac.uk/id/eprint/526135/7/jcli-d-19-0323.1%20%281%29.pdf https://doi.org/10.1175/JCLI-D-19-0323.1 |
genre |
Iceland north atlantic current North Atlantic |
genre_facet |
Iceland north atlantic current North Atlantic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/526135/1/jcli-d-19-0323.1.pdf https://nora.nerc.ac.uk/id/eprint/526135/7/jcli-d-19-0323.1%20%281%29.pdf Bryden, Harry L.; Johns, William E.; King, Brian A. orcid:0000-0003-1338-3234 McCarthy, Gerard; McDonagh, Elaine L.; Moat, Ben I. orcid:0000-0001-8676-7779 Smeed, David A. orcid:0000-0003-1740-1778 . 2020 Reduction in ocean heat transport at 26°N since 2008 cools the eastern subpolar gyre of the North Atlantic Ocean. Journal of Climate, 33 (5). 1677-1689. https://doi.org/10.1175/JCLI-D-19-0323.1 <https://doi.org/10.1175/JCLI-D-19-0323.1> |
op_doi |
https://doi.org/10.1175/JCLI-D-19-0323.1 |
container_title |
Journal of Climate |
container_volume |
33 |
container_issue |
5 |
container_start_page |
1677 |
op_container_end_page |
1689 |
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1766038065183195136 |