Atmospheric multidecadal variations in the North Atlantic realm: proxy data, observations, and atmospheric circulation model studies
We investigate the spatial and temporal characteristics of multidecadal climate variability in the North Atlantic realm, using observational data, proxy data and model results. The dominant pattern of multidecadal variability of SST depicts a monopolar structure in the North Atlantic during the inst...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2007
|
Subjects: | |
Online Access: | http://www.clim-past.net/3/39/2007/cp-3-39-2007.pdf https://doaj.org/article/1918d7b6f2614953873459be0cbba79c |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:1918d7b6f2614953873459be0cbba79c |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:1918d7b6f2614953873459be0cbba79c 2023-05-15T17:26:07+02:00 Atmospheric multidecadal variations in the North Atlantic realm: proxy data, observations, and atmospheric circulation model studies K. Grosfeld G. Lohmann N. Rimbu K. Fraedrich F. Lunkeit 2007-01-01 http://www.clim-past.net/3/39/2007/cp-3-39-2007.pdf https://doaj.org/article/1918d7b6f2614953873459be0cbba79c en eng Copernicus Publications 1814-9324 1814-9332 http://www.clim-past.net/3/39/2007/cp-3-39-2007.pdf https://doaj.org/article/1918d7b6f2614953873459be0cbba79c undefined Climate of the Past, Vol 3, Iss 1, Pp 39-50 (2007) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2007 fttriple 2023-01-22T17:32:58Z We investigate the spatial and temporal characteristics of multidecadal climate variability in the North Atlantic realm, using observational data, proxy data and model results. The dominant pattern of multidecadal variability of SST depicts a monopolar structure in the North Atlantic during the instrumental period with cold (warm) phases during 1900–1925 and 1970–1990 (1870–1890 and 1940–1960). Two atmospheric general circulation models of different complexity forced with global SST over the last century show SLP anomaly patterns from the warm and cold phases of the North Atlantic similar to the corresponding observed patterns. The analysis of a sediment core from Cariaco Basin, a coral record from the northern Red Sea, and a long-term sea level pressure (SLP) reconstruction reveals that the multidecadal mode of the atmospheric circulation characterizes climate variability also in the pre-industrial era. The analyses of SLP reconstruction and proxy data depict a persistent atmospheric mode at least over the last 300 years, where SLP shows a dipolar structure in response to monopolar North Atlantic SST, in a similar way as the models' responses do. The combined analysis of observational and proxy data with model experiments provides an understanding of multidecadal climate modes during the late Holocene. The related patterns are useful for the interpretation of proxy data in the North Atlantic realm. Article in Journal/Newspaper North Atlantic Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir K. Grosfeld G. Lohmann N. Rimbu K. Fraedrich F. Lunkeit Atmospheric multidecadal variations in the North Atlantic realm: proxy data, observations, and atmospheric circulation model studies |
topic_facet |
geo envir |
description |
We investigate the spatial and temporal characteristics of multidecadal climate variability in the North Atlantic realm, using observational data, proxy data and model results. The dominant pattern of multidecadal variability of SST depicts a monopolar structure in the North Atlantic during the instrumental period with cold (warm) phases during 1900–1925 and 1970–1990 (1870–1890 and 1940–1960). Two atmospheric general circulation models of different complexity forced with global SST over the last century show SLP anomaly patterns from the warm and cold phases of the North Atlantic similar to the corresponding observed patterns. The analysis of a sediment core from Cariaco Basin, a coral record from the northern Red Sea, and a long-term sea level pressure (SLP) reconstruction reveals that the multidecadal mode of the atmospheric circulation characterizes climate variability also in the pre-industrial era. The analyses of SLP reconstruction and proxy data depict a persistent atmospheric mode at least over the last 300 years, where SLP shows a dipolar structure in response to monopolar North Atlantic SST, in a similar way as the models' responses do. The combined analysis of observational and proxy data with model experiments provides an understanding of multidecadal climate modes during the late Holocene. The related patterns are useful for the interpretation of proxy data in the North Atlantic realm. |
format |
Article in Journal/Newspaper |
author |
K. Grosfeld G. Lohmann N. Rimbu K. Fraedrich F. Lunkeit |
author_facet |
K. Grosfeld G. Lohmann N. Rimbu K. Fraedrich F. Lunkeit |
author_sort |
K. Grosfeld |
title |
Atmospheric multidecadal variations in the North Atlantic realm: proxy data, observations, and atmospheric circulation model studies |
title_short |
Atmospheric multidecadal variations in the North Atlantic realm: proxy data, observations, and atmospheric circulation model studies |
title_full |
Atmospheric multidecadal variations in the North Atlantic realm: proxy data, observations, and atmospheric circulation model studies |
title_fullStr |
Atmospheric multidecadal variations in the North Atlantic realm: proxy data, observations, and atmospheric circulation model studies |
title_full_unstemmed |
Atmospheric multidecadal variations in the North Atlantic realm: proxy data, observations, and atmospheric circulation model studies |
title_sort |
atmospheric multidecadal variations in the north atlantic realm: proxy data, observations, and atmospheric circulation model studies |
publisher |
Copernicus Publications |
publishDate |
2007 |
url |
http://www.clim-past.net/3/39/2007/cp-3-39-2007.pdf https://doaj.org/article/1918d7b6f2614953873459be0cbba79c |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Climate of the Past, Vol 3, Iss 1, Pp 39-50 (2007) |
op_relation |
1814-9324 1814-9332 http://www.clim-past.net/3/39/2007/cp-3-39-2007.pdf https://doaj.org/article/1918d7b6f2614953873459be0cbba79c |
op_rights |
undefined |
_version_ |
1766117683351257088 |