Articles | Volume 19, issue 2
https://doi.org/10.5194/cp-19-493-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-19-493-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
23 Feb 2023
Research article |
| 23 Feb 2023
| 23 Feb 2023
Climate changes during the Late Glacial in southern Europe: new insights based on pollen and brGDGTs of Lake Matese in Italy
Mary Robles
CORRESPONDING AUTHOR
Department of Agricultural, Environmental and Food Sciences, Univ. Molise, Campobasso, Italy
ISEM, CNRS, IRD, EPHE, Univ. Montpellier, 34095 Montpellier, France
Odile Peyron
CORRESPONDING AUTHOR
ISEM, CNRS, IRD, EPHE, Univ. Montpellier, 34095 Montpellier, France
Guillemette Ménot
LGL-TPE, ENS de Lyon, UCBL, UJM, CNRS, Univ. Lyon 1, 69007 Lyon, France
Elisabetta Brugiapaglia
Department of Agricultural, Environmental and Food Sciences, Univ. Molise, Campobasso, Italy
Sabine Wulf
School of the Environment, Geography and Geosciences, University of Portsmouth, Portsmouth, United Kingdom
Oona Appelt
GFZ German Research Centre of Geosciences, Section 3.6, Helmholtz Centre Potsdam, Telegrafenberg, Potsdam, Germany
Marion Blache
ISEM, CNRS, IRD, EPHE, Univ. Montpellier, 34095 Montpellier, France
Boris Vannière
Chrono-Environnement, CNRS, Univ. Bourgogne Franche-Comté,
25000 Besançon, France
MSHE Ledoux, CNRS, Université Bourgogne Franche-Comté,
25000 Besançon, France
Lucas Dugerdil
ISEM, CNRS, IRD, EPHE, Univ. Montpellier, 34095 Montpellier, France
Bruno Paura
Department of Agricultural, Environmental and Food Sciences, Univ. Molise, Campobasso, Italy
Salomé Ansanay-Alex
LGL-TPE, ENS de Lyon, UCBL, UJM, CNRS, Univ. Lyon 1, 69007 Lyon, France
Amy Cromartie
Department of Anthropology, Cornell University, Ithaca, NY, USA
Laurent Charlet
ISTerre, IFSTTAR, CNRS, IRD, Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, 38058 Grenoble, France
Stephane Guédron
ISTerre, IFSTTAR, CNRS, IRD, Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, 38058 Grenoble, France
Jacques-Louis de Beaulieu
IMBE, CNRS, IRD, Aix-Marseille Univ., Avignon Univ., 13545 Aix-en-Provence, France
Sébastien Joannin
ISEM, CNRS, IRD, EPHE, Univ. Montpellier, 34095 Montpellier, France
LGL-TPE, ENS de Lyon, UCBL, UJM, CNRS, Univ. Lyon 1, 69007 Lyon, France
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Ulrike Herzschuh, Thomas Böhmer, Chenzhi Li, Manuel Chevalier, Raphaël Hébert, Anne Dallmeyer, Xianyong Cao, Nancy H. Bigelow, Larisa Nazarova, Elena Y. Novenko, Jungjae Park, Odile Peyron, Natalia A. Rudaya, Frank Schlütz, Lyudmila S. Shumilovskikh, Pavel E. Tarasov, Yongbo Wang, Ruilin Wen, Qinghai Xu, and Zhuo Zheng
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Climate reconstruction from proxy data can help evaluate climate models. We present pollen-based reconstructions of mean July temperature, mean annual temperature, and annual precipitation from 2594 pollen records from the Northern Hemisphere, using three reconstruction methods (WA-PLS, WA-PLS_tailored, and MAT). Since no global or hemispheric synthesis of quantitative precipitation changes are available for the Holocene so far, this dataset will be of great value to the geoscientific community.
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The equilibrium phase of A + HP clinoenstatite = forsterite + water was experimentally investigated at aH2O = 1 in situ. In cold subducting slabs, it is of relevance to transport water to large depths, initiating the formation of dense hydrous magnesium silicate (DHMS). At normal gradients, the huge water amount from this reaction induces important processes within the overlying mantle wedge. We additionally discuss the relevance of this reaction for intermediate-depth earthquake formation.
Lucas Dugerdil, Sébastien Joannin, Odile Peyron, Isabelle Jouffroy-Bapicot, Boris Vannière, Bazartseren Boldgiv, Julia Unkelbach, Hermann Behling, and Guillemette Ménot
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Since the understanding of Holocene climate change appears to be a relevant issue for future climate change, the paleoclimate calibrations have to be improved. Here, surface samples from Mongolia and Siberia were analyzed to provide new calibrations for pollen and biomarker climate models. These calibrations appear to be more powerful than global calibrations, especially in an arid central Asian context. These calibrations will improve the understanding of monsoon Holocene oscillations.
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Short summary
Quantitative climate reconstructions based on pollen and brGDGTs reveal, for the Late Glacial, a warm Bølling–Allerød and a marked cold Younger Dryas in Italy, showing no latitudinal differences in terms of temperatures across Italy. In terms of precipitation, no latitudinal differences are recorded during the Bølling–Allerød, whereas 40–42° N appears as a key junction point between wetter conditions in southern Italy and drier conditions in northern Italy during the Younger Dryas.
Quantitative climate reconstructions based on pollen and brGDGTs reveal, for the Late Glacial, a...
