Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern Mediterranean basin
Forcings and mechanisms underlying Holocene climate variability still remain poorly. This work review already published paleoclimatic time series and proposes an alternative way to compare them using spectral analysis. Such an approach may emphasize joint features between different signals and lead...
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ftubarcepubl:oai:diposit.ub.edu:2445/172656 2024-06-23T07:55:15+00:00 Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern Mediterranean basin Azuara, Julien Sabatier, Philippe Lebreton, Vincent Sicre, Marie Alexandrine Dezileau, Laurent Bassetti, Maria Angela Frigola Ferrer, Jaime I. Coumbourieu-Nebout, Nathalie Bassem, Jalali 2020-09 42 p. application/pdf http://hdl.handle.net/2445/172656 eng eng Elsevier B.V. Versió postprint del document publicat a: https://doi.org/10.1016/j.earscirev.2020.103232 Earth-Science Reviews, 2020, vol. 208, p. 103232 https://doi.org/10.1016/j.earscirev.2020.103232 0012-8252 http://hdl.handle.net/2445/172656 705125 cc-by-nc-nd (c) Elsevier B.V., 2020 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) Holocè Paleoclimatologia Mediterrània (Mar) Holocene Paleoclimatology Mediterranean Sea info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 2020 ftubarcepubl https://doi.org/10.1016/j.earscirev.2020.103232 2024-06-04T23:49:10Z Forcings and mechanisms underlying Holocene climate variability still remain poorly. This work review already published paleoclimatic time series and proposes an alternative way to compare them using spectral analysis. Such an approach may emphasize joint features between different signals and lead us closer to the causes of climate changes. Ten paleoclimatic proxy records from 5 sequences from the Gulf of Lions and surrounding areas were compiled. These paleoclimate time-series were supplemented with proxies of the North Atlantic Oscillations (NAO), El Niño-Southern Oscillations (ENSO) and the Intertropical Convergence Zone (ITCZ) variability. A comparison of their frequency content is proposed using wavelet analysis for unevenly sampled time series. A new algorithm is used in order to propagate the age model errors within wavelet power spectra. Three main groups of shared features specific to the Mid- and Late Holocene (after 7000 yrs cal BP) can be defined on the basis of the results of these analyses, an Atlantic cyclic period, solar cyclic periods and tropical cyclic periods. The Atlantic cyclic period is probably related to fluctuations of the Atlantic thermohaline circulation which would induce changes in the storm track extension and position thereby impacting upon precipitation and storminess over a millennial scale. The centennial scale solar variability might induce a NAO-like variability of the atmospheric circulation thereby influencing storminess in Western Europe and Mediterranean. Finally, tropical cyclic periods are possibly registered in of the Gulf of Lions and Atlantic climate proxies, potentially highlighting the influence of ENSO variability over the western Mediterranean. Article in Journal/Newspaper North Atlantic Dipòsit Digital de la Universitat de Barcelona Earth-Science Reviews 208 103232 |
institution |
Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Holocè Paleoclimatologia Mediterrània (Mar) Holocene Paleoclimatology Mediterranean Sea |
spellingShingle |
Holocè Paleoclimatologia Mediterrània (Mar) Holocene Paleoclimatology Mediterranean Sea Azuara, Julien Sabatier, Philippe Lebreton, Vincent Sicre, Marie Alexandrine Dezileau, Laurent Bassetti, Maria Angela Frigola Ferrer, Jaime I. Coumbourieu-Nebout, Nathalie Bassem, Jalali Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern Mediterranean basin |
topic_facet |
Holocè Paleoclimatologia Mediterrània (Mar) Holocene Paleoclimatology Mediterranean Sea |
description |
Forcings and mechanisms underlying Holocene climate variability still remain poorly. This work review already published paleoclimatic time series and proposes an alternative way to compare them using spectral analysis. Such an approach may emphasize joint features between different signals and lead us closer to the causes of climate changes. Ten paleoclimatic proxy records from 5 sequences from the Gulf of Lions and surrounding areas were compiled. These paleoclimate time-series were supplemented with proxies of the North Atlantic Oscillations (NAO), El Niño-Southern Oscillations (ENSO) and the Intertropical Convergence Zone (ITCZ) variability. A comparison of their frequency content is proposed using wavelet analysis for unevenly sampled time series. A new algorithm is used in order to propagate the age model errors within wavelet power spectra. Three main groups of shared features specific to the Mid- and Late Holocene (after 7000 yrs cal BP) can be defined on the basis of the results of these analyses, an Atlantic cyclic period, solar cyclic periods and tropical cyclic periods. The Atlantic cyclic period is probably related to fluctuations of the Atlantic thermohaline circulation which would induce changes in the storm track extension and position thereby impacting upon precipitation and storminess over a millennial scale. The centennial scale solar variability might induce a NAO-like variability of the atmospheric circulation thereby influencing storminess in Western Europe and Mediterranean. Finally, tropical cyclic periods are possibly registered in of the Gulf of Lions and Atlantic climate proxies, potentially highlighting the influence of ENSO variability over the western Mediterranean. |
format |
Article in Journal/Newspaper |
author |
Azuara, Julien Sabatier, Philippe Lebreton, Vincent Sicre, Marie Alexandrine Dezileau, Laurent Bassetti, Maria Angela Frigola Ferrer, Jaime I. Coumbourieu-Nebout, Nathalie Bassem, Jalali |
author_facet |
Azuara, Julien Sabatier, Philippe Lebreton, Vincent Sicre, Marie Alexandrine Dezileau, Laurent Bassetti, Maria Angela Frigola Ferrer, Jaime I. Coumbourieu-Nebout, Nathalie Bassem, Jalali |
author_sort |
Azuara, Julien |
title |
Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern Mediterranean basin |
title_short |
Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern Mediterranean basin |
title_full |
Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern Mediterranean basin |
title_fullStr |
Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern Mediterranean basin |
title_full_unstemmed |
Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern Mediterranean basin |
title_sort |
mid- to late-holocene mediterranean climate variability: contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the northwestern mediterranean basin |
publisher |
Elsevier B.V. |
publishDate |
2020 |
url |
http://hdl.handle.net/2445/172656 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) |
op_relation |
Versió postprint del document publicat a: https://doi.org/10.1016/j.earscirev.2020.103232 Earth-Science Reviews, 2020, vol. 208, p. 103232 https://doi.org/10.1016/j.earscirev.2020.103232 0012-8252 http://hdl.handle.net/2445/172656 705125 |
op_rights |
cc-by-nc-nd (c) Elsevier B.V., 2020 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.earscirev.2020.103232 |
container_title |
Earth-Science Reviews |
container_volume |
208 |
container_start_page |
103232 |
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1802647750041403392 |