Impact of a 30% reduction in Atlantic meridional overturning during 2009–2010
The Atlantic meridional overturning circulation comprises warm upper waters flowing northward, becoming colder and denser until they form deep water in the Labrador and Nordic Seas that then returns southward through the North and South Atlantic. The ocean heat transport associated with this circula...
Published in: | Ocean Science |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2014
|
Subjects: | |
Online Access: | https://doi.org/10.5194/os-10-683-2014 https://doaj.org/article/7b575ccf5379486db007172677c85279 |
id |
ftdoajarticles:oai:doaj.org/article:7b575ccf5379486db007172677c85279 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:7b575ccf5379486db007172677c85279 2023-05-15T17:24:21+02:00 Impact of a 30% reduction in Atlantic meridional overturning during 2009–2010 H. L. Bryden B. A. King G. D. McCarthy E. L. McDonagh 2014-08-01T00:00:00Z https://doi.org/10.5194/os-10-683-2014 https://doaj.org/article/7b575ccf5379486db007172677c85279 EN eng Copernicus Publications http://www.ocean-sci.net/10/683/2014/os-10-683-2014.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 1812-0784 1812-0792 doi:10.5194/os-10-683-2014 https://doaj.org/article/7b575ccf5379486db007172677c85279 Ocean Science, Vol 10, Iss 4, Pp 683-691 (2014) Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2014 ftdoajarticles https://doi.org/10.5194/os-10-683-2014 2022-12-31T11:26:17Z The Atlantic meridional overturning circulation comprises warm upper waters flowing northward, becoming colder and denser until they form deep water in the Labrador and Nordic Seas that then returns southward through the North and South Atlantic. The ocean heat transport associated with this circulation is 1.3 PW, accounting for 25% of the maximum combined atmosphere–ocean heat transport necessary to balance the Earth's radiation budget. We have been monitoring the circulation at 25° N since 2004. A 30% slowdown in the circulation for 14 months during 2009–2010 reduced northward ocean heat transport across 25° N by 0.4 PW and resulted in colder upper ocean waters north of 25° N and warmer waters south of 25° N. The spatial pattern of upper ocean temperature anomalies helped push the wintertime circulation 2010–2011 into record-low negative NAO (North Atlantic Oscillation) conditions with accompanying severe winter conditions over northwestern Europe. The warmer temperatures south of 25° N contributed to the high intensity hurricane season in summer 2010. Article in Journal/Newspaper Nordic Seas North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Ocean Science 10 4 683 691 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 H. L. Bryden B. A. King G. D. McCarthy E. L. McDonagh Impact of a 30% reduction in Atlantic meridional overturning during 2009–2010 |
topic_facet |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
The Atlantic meridional overturning circulation comprises warm upper waters flowing northward, becoming colder and denser until they form deep water in the Labrador and Nordic Seas that then returns southward through the North and South Atlantic. The ocean heat transport associated with this circulation is 1.3 PW, accounting for 25% of the maximum combined atmosphere–ocean heat transport necessary to balance the Earth's radiation budget. We have been monitoring the circulation at 25° N since 2004. A 30% slowdown in the circulation for 14 months during 2009–2010 reduced northward ocean heat transport across 25° N by 0.4 PW and resulted in colder upper ocean waters north of 25° N and warmer waters south of 25° N. The spatial pattern of upper ocean temperature anomalies helped push the wintertime circulation 2010–2011 into record-low negative NAO (North Atlantic Oscillation) conditions with accompanying severe winter conditions over northwestern Europe. The warmer temperatures south of 25° N contributed to the high intensity hurricane season in summer 2010. |
format |
Article in Journal/Newspaper |
author |
H. L. Bryden B. A. King G. D. McCarthy E. L. McDonagh |
author_facet |
H. L. Bryden B. A. King G. D. McCarthy E. L. McDonagh |
author_sort |
H. L. Bryden |
title |
Impact of a 30% reduction in Atlantic meridional overturning during 2009–2010 |
title_short |
Impact of a 30% reduction in Atlantic meridional overturning during 2009–2010 |
title_full |
Impact of a 30% reduction in Atlantic meridional overturning during 2009–2010 |
title_fullStr |
Impact of a 30% reduction in Atlantic meridional overturning during 2009–2010 |
title_full_unstemmed |
Impact of a 30% reduction in Atlantic meridional overturning during 2009–2010 |
title_sort |
impact of a 30% reduction in atlantic meridional overturning during 2009–2010 |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/os-10-683-2014 https://doaj.org/article/7b575ccf5379486db007172677c85279 |
genre |
Nordic Seas North Atlantic North Atlantic oscillation |
genre_facet |
Nordic Seas North Atlantic North Atlantic oscillation |
op_source |
Ocean Science, Vol 10, Iss 4, Pp 683-691 (2014) |
op_relation |
http://www.ocean-sci.net/10/683/2014/os-10-683-2014.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 1812-0784 1812-0792 doi:10.5194/os-10-683-2014 https://doaj.org/article/7b575ccf5379486db007172677c85279 |
op_doi |
https://doi.org/10.5194/os-10-683-2014 |
container_title |
Ocean Science |
container_volume |
10 |
container_issue |
4 |
container_start_page |
683 |
op_container_end_page |
691 |
_version_ |
1766115322865123328 |