Revisiting the Earth's sea-level and energy budgets from 1961 to 2008
Using five ice core data sets combined into a single time series, we provide for the first time strong observational evidence for two distinct time scales of Arctic temperature fluctuation that are interpreted as variability associated with the Atlantic Multidecadal Oscillation (AMO). The dominant a...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/231619 2023-07-23T04:17:50+02:00 Revisiting the Earth's sea-level and energy budgets from 1961 to 2008 Chylek, P. Folland, C.K. Dijkstra, H.A. Lesins, G. Dubey, M.K. Marine and Atmospheric Research Sub Physical Oceanography 2011 image/pdf https://dspace.library.uu.nl/handle/1874/231619 en eng 0094-8276 https://dspace.library.uu.nl/handle/1874/231619 info:eu-repo/semantics/OpenAccess Article 2011 ftunivutrecht 2023-07-02T00:05:06Z Using five ice core data sets combined into a single time series, we provide for the first time strong observational evidence for two distinct time scales of Arctic temperature fluctuation that are interpreted as variability associated with the Atlantic Multidecadal Oscillation (AMO). The dominant and the only statistically significant multidecadal signal has a time scale of about 20 years. The longer multidecadal variability of 45–85 years is not well defined and none of the time scales in this band is statistically significant. We compare these observed temperature fluctuations with results of coupled climate model simulations (HadCM3 and GFDL CM2.1). Both the 20–25 year and a variable longer AMO time scale are prominent in the models' long control runs. This periodicity supports our conjecture that the observed ice core fluctuations are a signature of the AMO. The robustness of this short time scale period in both observations and model simulations has implications for understanding the dominant AMO mechanisms in climate. Article in Journal/Newspaper Arctic ice core Utrecht University Repository Arctic |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
description |
Using five ice core data sets combined into a single time series, we provide for the first time strong observational evidence for two distinct time scales of Arctic temperature fluctuation that are interpreted as variability associated with the Atlantic Multidecadal Oscillation (AMO). The dominant and the only statistically significant multidecadal signal has a time scale of about 20 years. The longer multidecadal variability of 45–85 years is not well defined and none of the time scales in this band is statistically significant. We compare these observed temperature fluctuations with results of coupled climate model simulations (HadCM3 and GFDL CM2.1). Both the 20–25 year and a variable longer AMO time scale are prominent in the models' long control runs. This periodicity supports our conjecture that the observed ice core fluctuations are a signature of the AMO. The robustness of this short time scale period in both observations and model simulations has implications for understanding the dominant AMO mechanisms in climate. |
author2 |
Marine and Atmospheric Research Sub Physical Oceanography |
format |
Article in Journal/Newspaper |
author |
Chylek, P. Folland, C.K. Dijkstra, H.A. Lesins, G. Dubey, M.K. |
spellingShingle |
Chylek, P. Folland, C.K. Dijkstra, H.A. Lesins, G. Dubey, M.K. Revisiting the Earth's sea-level and energy budgets from 1961 to 2008 |
author_facet |
Chylek, P. Folland, C.K. Dijkstra, H.A. Lesins, G. Dubey, M.K. |
author_sort |
Chylek, P. |
title |
Revisiting the Earth's sea-level and energy budgets from 1961 to 2008 |
title_short |
Revisiting the Earth's sea-level and energy budgets from 1961 to 2008 |
title_full |
Revisiting the Earth's sea-level and energy budgets from 1961 to 2008 |
title_fullStr |
Revisiting the Earth's sea-level and energy budgets from 1961 to 2008 |
title_full_unstemmed |
Revisiting the Earth's sea-level and energy budgets from 1961 to 2008 |
title_sort |
revisiting the earth's sea-level and energy budgets from 1961 to 2008 |
publishDate |
2011 |
url |
https://dspace.library.uu.nl/handle/1874/231619 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ice core |
genre_facet |
Arctic ice core |
op_relation |
0094-8276 https://dspace.library.uu.nl/handle/1874/231619 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772179873863827456 |