Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records
International audience Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the northern Hemisphere for the last glacial cycle. its clear expression and rapid shifts between different states of climate (Greenland Inte...
Published in: | Scientific Reports |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-02557205 https://hal.sorbonne-universite.fr/hal-02557205/document https://hal.sorbonne-universite.fr/hal-02557205/file/s41598-020-61528-8.pdf https://doi.org/10.1038/s41598-020-61528-8 |
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ftunivnantes:oai:HAL:hal-02557205v1 |
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openpolar |
institution |
Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Palaeoclimate Sedimentology Stratigraphy [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [PHYS]Physics [physics] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
spellingShingle |
Palaeoclimate Sedimentology Stratigraphy [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [PHYS]Physics [physics] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Zeeden, Christian Obreht, Igor Veres, Daniel Kaboth-Bahr, Stefanie Hošek, Jan Marković, Slobodan, Bösken, Janina Lehmkuhl, Frank Rolf, Christian Hambach, Ulrich Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
topic_facet |
Palaeoclimate Sedimentology Stratigraphy [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [PHYS]Physics [physics] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
International audience Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the northern Hemisphere for the last glacial cycle. its clear expression and rapid shifts between different states of climate (Greenland Interstadials and Stadials) represents a correlation tool beyond the resolution of e.g. luminescence dating, especially relevant for terrestrial deposits. Usually, comparison of terrestrial proxy datasets and the Greenland ice cores indicates a complex expression of millennial-scale climate variability as recorded in terrestrial geoarchives including loess. Loess is the most widespread terrestrial geoarchive of the Quaternary and especially widespread over Eurasia. However, loess often records a smoothed representation of millennial-scale variability without all fidelity when compared to the Greenland data, this being a relevant limiting feature in integrating loess with other palaeoclimate records. to better understand the loess proxy-response to millennial-scale climate variability, we simulate a proxy signal smoothing by natural processes through application of low-pass filters of δ 18 O data from Greenland, a high-resolution palaeoclimate reference record, alongside speleothem isotope records from the Black Sea-Mediterranean region. We show that low-pass filters represent rather simple models for better constraining the expression of millennial-scale climate variability in low sedimentation environments, and in sediments where proxy-response signals are most likely affected by natural smoothing (by e.g. bioturbation). Interestingly, smoothed datasets from Greenland and the Black Sea-Mediterranean region are most similar in the last ~15 ka and between ~50-30 ka. Between ~30-15 ka, roughly corresponding to the Last Glacial Maximum and the deglaciation, the records show dissimilarities, challenging the construction of robust correlative timescales in this age range. from our analysis it becomes apparent that patterns ... |
author2 |
Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Leibniz Institute for Applied Geophysics (LIAG) Leibniz Association University of Bremen Romanian Academy IASI Romanian Academy of Sciences Universität Heidelberg Heidelberg University of Potsdam = Universität Potsdam Czech Technical University in Prague (CTU) Faculty of Sciences University of Novi Sad University of Novi Sad Rheinisch-Westfälische Technische Hochschule Aachen University (RWTH) University of Bayreuth |
format |
Article in Journal/Newspaper |
author |
Zeeden, Christian Obreht, Igor Veres, Daniel Kaboth-Bahr, Stefanie Hošek, Jan Marković, Slobodan, Bösken, Janina Lehmkuhl, Frank Rolf, Christian Hambach, Ulrich |
author_facet |
Zeeden, Christian Obreht, Igor Veres, Daniel Kaboth-Bahr, Stefanie Hošek, Jan Marković, Slobodan, Bösken, Janina Lehmkuhl, Frank Rolf, Christian Hambach, Ulrich |
author_sort |
Zeeden, Christian |
title |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_short |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_full |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_fullStr |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_full_unstemmed |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_sort |
smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: application to european loess records |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.sorbonne-universite.fr/hal-02557205 https://hal.sorbonne-universite.fr/hal-02557205/document https://hal.sorbonne-universite.fr/hal-02557205/file/s41598-020-61528-8.pdf https://doi.org/10.1038/s41598-020-61528-8 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores |
genre_facet |
Greenland Greenland ice cores |
op_source |
ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.sorbonne-universite.fr/hal-02557205 Scientific Reports, 2020, 10 (1), ⟨10.1038/s41598-020-61528-8⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-020-61528-8 hal-02557205 https://hal.sorbonne-universite.fr/hal-02557205 https://hal.sorbonne-universite.fr/hal-02557205/document https://hal.sorbonne-universite.fr/hal-02557205/file/s41598-020-61528-8.pdf BIBCODE: 2020NatSR.10.5455Z doi:10.1038/s41598-020-61528-8 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41598-020-61528-8 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
_version_ |
1766015540246085632 |
spelling |
ftunivnantes:oai:HAL:hal-02557205v1 2023-05-15T16:26:36+02:00 Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records Zeeden, Christian Obreht, Igor Veres, Daniel Kaboth-Bahr, Stefanie Hošek, Jan Marković, Slobodan, Bösken, Janina Lehmkuhl, Frank Rolf, Christian Hambach, Ulrich Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Leibniz Institute for Applied Geophysics (LIAG) Leibniz Association University of Bremen Romanian Academy IASI Romanian Academy of Sciences Universität Heidelberg Heidelberg University of Potsdam = Universität Potsdam Czech Technical University in Prague (CTU) Faculty of Sciences University of Novi Sad University of Novi Sad Rheinisch-Westfälische Technische Hochschule Aachen University (RWTH) University of Bayreuth 2020-12 https://hal.sorbonne-universite.fr/hal-02557205 https://hal.sorbonne-universite.fr/hal-02557205/document https://hal.sorbonne-universite.fr/hal-02557205/file/s41598-020-61528-8.pdf https://doi.org/10.1038/s41598-020-61528-8 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-020-61528-8 hal-02557205 https://hal.sorbonne-universite.fr/hal-02557205 https://hal.sorbonne-universite.fr/hal-02557205/document https://hal.sorbonne-universite.fr/hal-02557205/file/s41598-020-61528-8.pdf BIBCODE: 2020NatSR.10.5455Z doi:10.1038/s41598-020-61528-8 info:eu-repo/semantics/OpenAccess ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.sorbonne-universite.fr/hal-02557205 Scientific Reports, 2020, 10 (1), ⟨10.1038/s41598-020-61528-8⟩ Palaeoclimate Sedimentology Stratigraphy [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [PHYS]Physics [physics] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.1038/s41598-020-61528-8 2023-01-04T00:00:18Z International audience Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the northern Hemisphere for the last glacial cycle. its clear expression and rapid shifts between different states of climate (Greenland Interstadials and Stadials) represents a correlation tool beyond the resolution of e.g. luminescence dating, especially relevant for terrestrial deposits. Usually, comparison of terrestrial proxy datasets and the Greenland ice cores indicates a complex expression of millennial-scale climate variability as recorded in terrestrial geoarchives including loess. Loess is the most widespread terrestrial geoarchive of the Quaternary and especially widespread over Eurasia. However, loess often records a smoothed representation of millennial-scale variability without all fidelity when compared to the Greenland data, this being a relevant limiting feature in integrating loess with other palaeoclimate records. to better understand the loess proxy-response to millennial-scale climate variability, we simulate a proxy signal smoothing by natural processes through application of low-pass filters of δ 18 O data from Greenland, a high-resolution palaeoclimate reference record, alongside speleothem isotope records from the Black Sea-Mediterranean region. We show that low-pass filters represent rather simple models for better constraining the expression of millennial-scale climate variability in low sedimentation environments, and in sediments where proxy-response signals are most likely affected by natural smoothing (by e.g. bioturbation). Interestingly, smoothed datasets from Greenland and the Black Sea-Mediterranean region are most similar in the last ~15 ka and between ~50-30 ka. Between ~30-15 ka, roughly corresponding to the Last Glacial Maximum and the deglaciation, the records show dissimilarities, challenging the construction of robust correlative timescales in this age range. from our analysis it becomes apparent that patterns ... Article in Journal/Newspaper Greenland Greenland ice cores Université de Nantes: HAL-UNIV-NANTES Greenland Scientific Reports 10 1 |