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 268N in the Atlantic Ocean has been measured since 2004. The ocean heat transport is large—approximately 1.25 PW, 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...
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ftunivmaynooth:oai:mural.maynoothuniversity.ie:13987 2024-04-07T07:53:26+00:00 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, Bengamin I. Smeed, David A. 2020 text https://mural.maynoothuniversity.ie/13987/ https://mural.maynoothuniversity.ie/13987/1/GM_reduction.pdf en eng American Meteorological Society https://mural.maynoothuniversity.ie/13987/1/GM_reduction.pdf Bryden, Harry L. and Johns, William E. and King, Brian A. and McCarthy, Gerard and McDonagh, Elaine L. and Moat, Bengamin I. and Smeed, David A. (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. pp. 1677-1689. ISSN 0894-8755 Article PeerReviewed 2020 ftunivmaynooth 2024-03-13T01:26:33Z Northward ocean heat transport at 268N in the Atlantic Ocean has been measured since 2004. The ocean heat transport is large—approximately 1.25 PW, 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 (2009–16) on an annual average basis associated with a 2.5-Sv (1 Sv [ 106 m3 s 21 ) drop in the Atlantic meridional overturning circulation (AMOC). The reduction in the AMOC has cooled and freshened the upper ocean north of 268N 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 28C 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 Maynooth University ePrints and eTheses Archive (National University of Ireland) |
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Open Polar |
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Maynooth University ePrints and eTheses Archive (National University of Ireland) |
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ftunivmaynooth |
language |
English |
description |
Northward ocean heat transport at 268N in the Atlantic Ocean has been measured since 2004. The ocean heat transport is large—approximately 1.25 PW, 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 (2009–16) on an annual average basis associated with a 2.5-Sv (1 Sv [ 106 m3 s 21 ) drop in the Atlantic meridional overturning circulation (AMOC). The reduction in the AMOC has cooled and freshened the upper ocean north of 268N 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 28C 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, Bengamin I. Smeed, David A. |
spellingShingle |
Bryden, Harry L. Johns, William E. King, Brian A. McCarthy, Gerard McDonagh, Elaine L. Moat, Bengamin 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, Bengamin 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 |
publisher |
American Meteorological Society |
publishDate |
2020 |
url |
https://mural.maynoothuniversity.ie/13987/ https://mural.maynoothuniversity.ie/13987/1/GM_reduction.pdf |
genre |
Iceland north atlantic current North Atlantic |
genre_facet |
Iceland north atlantic current North Atlantic |
op_relation |
https://mural.maynoothuniversity.ie/13987/1/GM_reduction.pdf Bryden, Harry L. and Johns, William E. and King, Brian A. and McCarthy, Gerard and McDonagh, Elaine L. and Moat, Bengamin I. and Smeed, David A. (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. pp. 1677-1689. ISSN 0894-8755 |
_version_ |
1795669280716488704 |