Coupled ocean and atmospheric changes during Greenland stadial 1 in southwestern Europe
International audience Paleoclimate reconstructions suggest that the complex variability within the Greenland stadial 1 (GS-1) over western Europe was governed by coupled ocean and atmospheric changes. However, few works from the North Atlantic mid-latitudes document both the GS-1 onset and its term...
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Online Access: | https://hal.science/hal-04603088 https://doi.org/10.1016/j.quascirev.2019.03.033 |
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ftinsu:oai:HAL:hal-04603088v1 2024-06-23T07:53:19+00:00 Coupled ocean and atmospheric changes during Greenland stadial 1 in southwestern Europe Naughton, F. Costas, S. Gomes, S. D. Desprat, Stephanie Rodrigues, T. Sanchez Goni, Maria Renssen, H. Trigo, R. Bronk-Ramsey, C. Oliveira, D. Salgueiro, E. Voelker, A. H. L. Abrantes, F. Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) 2019-05-01 https://hal.science/hal-04603088 https://doi.org/10.1016/j.quascirev.2019.03.033 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2019.03.033 hal-04603088 https://hal.science/hal-04603088 doi:10.1016/j.quascirev.2019.03.033 ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://hal.science/hal-04603088 Quaternary Science Reviews, 2019, 212, pp.108-120. ⟨10.1016/j.quascirev.2019.03.033⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2019 ftinsu https://doi.org/10.1016/j.quascirev.2019.03.033 2024-06-12T23:55:27Z International audience Paleoclimate reconstructions suggest that the complex variability within the Greenland stadial 1 (GS-1) over western Europe was governed by coupled ocean and atmospheric changes. However, few works from the North Atlantic mid-latitudes document both the GS-1 onset and its termination, which are often considered as single abrupt transition events. Here, we present a direct comparison between marine (alkenone-based sea surface temperatures) and terrestrial (pollen) data, at very high resolution (28 years mean), from the southwestern Iberian shelf record D13882. Our results reveal a rather complex climatic period with internally changing conditions. The GS-1 onset (GS-1a: 12890-12720 yr BP) is marked by a progressive cooling and drying; GS-1b (12720-12390 yr BP) is the coldest and driest phase; GS-1c (12390-12030 yr BP) is marked by a progressive warming and increase in moisture conditions; GS-1 termination (GS-1d: 12030-11770 yr BP) is marked by rapid switches between cool wet, cold dry and cool wet conditions. Although hydroclimate response was very unsteady throughout the GS-1 and in particular during its termination phase, the persistence of an open temperate and Mediterranean forest in southwestern Iberia during the entire episode suggests that at least some moisture was delivered via the Westerlies. We propose coupled ocean and atmospheric mechanisms to reproduce these scenaria. Changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC) as well as variations in the North Atlantic sea-ice growth have favoured the displacement of the polar jet stream's latitudinal position and contributed to a complex spatial pattern and strength of the Westerlies across western Europe. Article in Journal/Newspaper Greenland North Atlantic Sea ice Institut national des sciences de l'Univers: HAL-INSU Greenland Quaternary Science Reviews 212 108 120 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Naughton, F. Costas, S. Gomes, S. D. Desprat, Stephanie Rodrigues, T. Sanchez Goni, Maria Renssen, H. Trigo, R. Bronk-Ramsey, C. Oliveira, D. Salgueiro, E. Voelker, A. H. L. Abrantes, F. Coupled ocean and atmospheric changes during Greenland stadial 1 in southwestern Europe |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Paleoclimate reconstructions suggest that the complex variability within the Greenland stadial 1 (GS-1) over western Europe was governed by coupled ocean and atmospheric changes. However, few works from the North Atlantic mid-latitudes document both the GS-1 onset and its termination, which are often considered as single abrupt transition events. Here, we present a direct comparison between marine (alkenone-based sea surface temperatures) and terrestrial (pollen) data, at very high resolution (28 years mean), from the southwestern Iberian shelf record D13882. Our results reveal a rather complex climatic period with internally changing conditions. The GS-1 onset (GS-1a: 12890-12720 yr BP) is marked by a progressive cooling and drying; GS-1b (12720-12390 yr BP) is the coldest and driest phase; GS-1c (12390-12030 yr BP) is marked by a progressive warming and increase in moisture conditions; GS-1 termination (GS-1d: 12030-11770 yr BP) is marked by rapid switches between cool wet, cold dry and cool wet conditions. Although hydroclimate response was very unsteady throughout the GS-1 and in particular during its termination phase, the persistence of an open temperate and Mediterranean forest in southwestern Iberia during the entire episode suggests that at least some moisture was delivered via the Westerlies. We propose coupled ocean and atmospheric mechanisms to reproduce these scenaria. Changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC) as well as variations in the North Atlantic sea-ice growth have favoured the displacement of the polar jet stream's latitudinal position and contributed to a complex spatial pattern and strength of the Westerlies across western Europe. |
author2 |
Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Naughton, F. Costas, S. Gomes, S. D. Desprat, Stephanie Rodrigues, T. Sanchez Goni, Maria Renssen, H. Trigo, R. Bronk-Ramsey, C. Oliveira, D. Salgueiro, E. Voelker, A. H. L. Abrantes, F. |
author_facet |
Naughton, F. Costas, S. Gomes, S. D. Desprat, Stephanie Rodrigues, T. Sanchez Goni, Maria Renssen, H. Trigo, R. Bronk-Ramsey, C. Oliveira, D. Salgueiro, E. Voelker, A. H. L. Abrantes, F. |
author_sort |
Naughton, F. |
title |
Coupled ocean and atmospheric changes during Greenland stadial 1 in southwestern Europe |
title_short |
Coupled ocean and atmospheric changes during Greenland stadial 1 in southwestern Europe |
title_full |
Coupled ocean and atmospheric changes during Greenland stadial 1 in southwestern Europe |
title_fullStr |
Coupled ocean and atmospheric changes during Greenland stadial 1 in southwestern Europe |
title_full_unstemmed |
Coupled ocean and atmospheric changes during Greenland stadial 1 in southwestern Europe |
title_sort |
coupled ocean and atmospheric changes during greenland stadial 1 in southwestern europe |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-04603088 https://doi.org/10.1016/j.quascirev.2019.03.033 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic Sea ice |
genre_facet |
Greenland North Atlantic Sea ice |
op_source |
ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://hal.science/hal-04603088 Quaternary Science Reviews, 2019, 212, pp.108-120. ⟨10.1016/j.quascirev.2019.03.033⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2019.03.033 hal-04603088 https://hal.science/hal-04603088 doi:10.1016/j.quascirev.2019.03.033 |
op_doi |
https://doi.org/10.1016/j.quascirev.2019.03.033 |
container_title |
Quaternary Science Reviews |
container_volume |
212 |
container_start_page |
108 |
op_container_end_page |
120 |
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1802644902400491520 |