Global modes of climate variability
International audience The atmosphere, hydrosphere, and cryosphere form a fully coupled climate system. This system exhibits a number of large-scale phenomena, such as the El Niño-Southern Oscillation, the Asian Monsoon, the North Atlantic Oscillation, and the Madden-Julian Oscillation. While these...
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ftepunivpsaclay:oai:HAL:hal-01092296v1 2024-06-09T07:48:07+00:00 Global modes of climate variability de Viron, O. Dickey, J.O. Ghil, M. Institut de Physique du Globe de Paris (IPGP (UMR_7154)) Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Institute of Geophysics and Planetary Physics Los Angeles (IGPP) University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) Department of Atmospheric and Oceanic Sciences Los Angeles (AOS) 2013 https://hal.science/hal-01092296 https://hal.science/hal-01092296/document https://hal.science/hal-01092296/file/grl.50386.pdf https://doi.org/10.1002/grl.50386 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/grl.50386 hal-01092296 https://hal.science/hal-01092296 https://hal.science/hal-01092296/document https://hal.science/hal-01092296/file/grl.50386.pdf doi:10.1002/grl.50386 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-01092296 Geophysical Research Letters, 2013, 40 (9), pp.1832-1837. ⟨10.1002/grl.50386⟩ [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2013 ftepunivpsaclay https://doi.org/10.1002/grl.50386 2024-05-16T12:10:49Z International audience The atmosphere, hydrosphere, and cryosphere form a fully coupled climate system. This system exhibits a number of large-scale phenomena, such as the El Niño-Southern Oscillation, the Asian Monsoon, the North Atlantic Oscillation, and the Madden-Julian Oscillation. While these modes of variability are not exactly periodic, they are oscillatory in character, and their state is monitored using so-called climate indices. Each of these scalar indices is a combination of several climate variables. Here we use a comprehensive set of 25 climate indices for time intervals that range between 1948 and 2011 and estimate an optimal set of lags between these indices to maximize their correlation. We show that most of the index pairs drawn from this set present a significant correlation on interannual time scales. It is also shown that on average, about two thirds of the total variability in each index can be described by using only the four leading principal components of the entire set of lagged indices. Our index set's leading orthogonal modes exhibit several interannual frequencies and capture separately variability associated with the North Atlantic and the North Pacific. These modes are associated, in turn, with large-scale variations of sea surface temperatures. Key PointsMost of the climate indices are cross-correlated significantlyMost of their variability can be captured with only four principal componentsThose components are associated with global signatures in the SST ©2013. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper North Atlantic North Atlantic oscillation École Polytechnique, Université Paris-Saclay: HAL Pacific Geophysical Research Letters 40 9 1832 1837 |
institution |
Open Polar |
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École Polytechnique, Université Paris-Saclay: HAL |
op_collection_id |
ftepunivpsaclay |
language |
English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology de Viron, O. Dickey, J.O. Ghil, M. Global modes of climate variability |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience The atmosphere, hydrosphere, and cryosphere form a fully coupled climate system. This system exhibits a number of large-scale phenomena, such as the El Niño-Southern Oscillation, the Asian Monsoon, the North Atlantic Oscillation, and the Madden-Julian Oscillation. While these modes of variability are not exactly periodic, they are oscillatory in character, and their state is monitored using so-called climate indices. Each of these scalar indices is a combination of several climate variables. Here we use a comprehensive set of 25 climate indices for time intervals that range between 1948 and 2011 and estimate an optimal set of lags between these indices to maximize their correlation. We show that most of the index pairs drawn from this set present a significant correlation on interannual time scales. It is also shown that on average, about two thirds of the total variability in each index can be described by using only the four leading principal components of the entire set of lagged indices. Our index set's leading orthogonal modes exhibit several interannual frequencies and capture separately variability associated with the North Atlantic and the North Pacific. These modes are associated, in turn, with large-scale variations of sea surface temperatures. Key PointsMost of the climate indices are cross-correlated significantlyMost of their variability can be captured with only four principal componentsThose components are associated with global signatures in the SST ©2013. American Geophysical Union. All Rights Reserved. |
author2 |
Institut de Physique du Globe de Paris (IPGP (UMR_7154)) Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Institute of Geophysics and Planetary Physics Los Angeles (IGPP) University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) Department of Atmospheric and Oceanic Sciences Los Angeles (AOS) |
format |
Article in Journal/Newspaper |
author |
de Viron, O. Dickey, J.O. Ghil, M. |
author_facet |
de Viron, O. Dickey, J.O. Ghil, M. |
author_sort |
de Viron, O. |
title |
Global modes of climate variability |
title_short |
Global modes of climate variability |
title_full |
Global modes of climate variability |
title_fullStr |
Global modes of climate variability |
title_full_unstemmed |
Global modes of climate variability |
title_sort |
global modes of climate variability |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-01092296 https://hal.science/hal-01092296/document https://hal.science/hal-01092296/file/grl.50386.pdf https://doi.org/10.1002/grl.50386 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-01092296 Geophysical Research Letters, 2013, 40 (9), pp.1832-1837. ⟨10.1002/grl.50386⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/grl.50386 hal-01092296 https://hal.science/hal-01092296 https://hal.science/hal-01092296/document https://hal.science/hal-01092296/file/grl.50386.pdf doi:10.1002/grl.50386 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/grl.50386 |
container_title |
Geophysical Research Letters |
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40 |
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9 |
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1832 |
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1837 |
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