Articles | Volume 20, issue 8
https://doi.org/10.5194/cp-20-1837-2024
© Author(s) 2024. 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-20-1837-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Aug 2024
Research article |
| 15 Aug 2024
| 15 Aug 2024
50-year seasonal variability in East African droughts and floods recorded in central Afar lake sediments (Ethiopia) and their connections with the El Niño–Southern Oscillation
Carlo Mologni
CORRESPONDING AUTHOR
Université Côte d'Azur, CNRS, OCA, IRD, Géoazur, 250 Rue Albert Einstein, Valbonne, France
Marie Revel
Université Côte d'Azur, CNRS, OCA, IRD, Géoazur, 250 Rue Albert Einstein, Valbonne, France
Eric Chaumillon
University of La Rochelle, UMR CNRS 7266 LIENSs, La Rochelle, France
Emmanuel Malet
Environnement Dynamique et Territoire de Montagne (EDYTEM), CNRS, Université Savoie Mont-Blanc, Le Bourget-du-lac, France
Thibault Coulombier
University of La Rochelle, UMR CNRS 7266 LIENSs, La Rochelle, France
Pierre Sabatier
Environnement Dynamique et Territoire de Montagne (EDYTEM), CNRS, Université Savoie Mont-Blanc, Le Bourget-du-lac, France
Pierre Brigode
Université Côte d'Azur, CNRS, OCA, IRD, Géoazur, 250 Rue Albert Einstein, Valbonne, France
Gwenael Hervé
Laboratoire des Sciences du Climat et de l'Environnement/IPSL, CEA, CNRS, UVSQ, University of Paris-Saclay, Gif-sur-Yvette, France
Anne-Lise Develle
Environnement Dynamique et Territoire de Montagne (EDYTEM), CNRS, Université Savoie Mont-Blanc, Le Bourget-du-lac, France
Laure Schenini
Université Côte d'Azur, CNRS, OCA, IRD, Géoazur, 250 Rue Albert Einstein, Valbonne, France
Medhi Messous
Université Côte d'Azur, CNRS, OCA, IRD, Géoazur, 250 Rue Albert Einstein, Valbonne, France
Gourguen Davtian
Université Côte d'Azur, CNRS, CEPAM – UMR 7264, 24 Av. des Diables Bleus, Nice, France
Alain Carré
Université Côte d'Azur, CNRS, CEPAM – UMR 7264, 24 Av. des Diables Bleus, Nice, France
Delphine Bosch
Géosciences Montpellier, UMR-CNRS 5243, Université de Montpellier, Montpellier, France
Natacha Volto
University of La Rochelle, UMR CNRS 7266 LIENSs, La Rochelle, France
Clément Ménard
EPCC, Centre Européen de Préhistoire, Avenue Léon-Jean Grégory, Tautavel, France
Lamya Khalidi
Université Côte d'Azur, CNRS, CEPAM – UMR 7264, 24 Av. des Diables Bleus, Nice, France
Fabien Arnaud
Environnement Dynamique et Territoire de Montagne (EDYTEM), CNRS, Université Savoie Mont-Blanc, Le Bourget-du-lac, France
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Olivier Delaigue, Guilherme Mendoza Guimarães, Pierre Brigode, Benoît Génot, Charles Perrin, Jean-Michel Soubeyroux, Bruno Janet, Nans Addor, and Vazken Andréassian
Earth Syst. Sci. Data, 17, 1461–1479, https://doi.org/10.5194/essd-17-1461-2025, https://doi.org/10.5194/essd-17-1461-2025, 2025
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Jacques Mourey, Pascal Lacroix, Pierre-Allain Duvillard, Guilhem Marsy, Marco Marcer, Emmanuel Malet, and Ludovic Ravanel
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Bernd Etzelmüller, Justyna Czekirda, Florence Magnin, Pierre-Allain Duvillard, Ludovic Ravanel, Emanuelle Malet, Andreas Aspaas, Lene Kristensen, Ingrid Skrede, Gudrun D. Majala, Benjamin Jacobs, Johannes Leinauer, Christian Hauck, Christin Hilbich, Martina Böhme, Reginald Hermanns, Harald Ø. Eriksen, Tom Rune Lauknes, Michael Krautblatter, and Sebastian Westermann
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Anthony Foucher, Pierre-Alexis Chaboche, Pierre Sabatier, and Olivier Evrard
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Sediment archives provide a powerful and unique tool for reconstructing the trajectory and the resilience of terrestrial and aquatic ecosystems facing major environmental changes. Establishing an age depth–model is the first prerequisite of any paleo-investigation. This study synthesizes the distribution of two radionuclides classically used to this aim, providing a worldwide reference to help the scientific community reach a consensus for dating recent sedimentary archives.
Pierre Véquaud, Sylvie Derenne, Alexandre Thibault, Christelle Anquetil, Giuliano Bonanomi, Sylvie Collin, Sergio Contreras, Andrew T. Nottingham, Pierre Sabatier, Norma Salinas, Wesley P. Scott, Josef P. Werne, and Arnaud Huguet
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A better understanding of past climate variations is essential to apprehend future climatic changes. The aim of this study is to investigate the applicability of specific organic compounds of bacterial origin, 3-hydroxy fatty acids (3-OH FAs), as temperature and pH proxies at the global level using an extended soil dataset. We show the major potential of 3-OH FAs as such proxies in terrestrial environments through the different models presented and their application for palaeoreconstruction.
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Short summary
The reactivity of local to regional hydrosystems to global changes remains understated in East African climate models. By reconstructing a chronicle of seasonal floods and droughts from a lacustrine sedimentary core, this paper highlights the impact of El Niño anomalies in the Awash River valley (Ethiopia). Studying regional hydrosystem feedbacks to global atmospheric anomalies is essential for better comprehending and mitigating the effects of global warming in extreme environments.
The reactivity of local to regional hydrosystems to global changes remains understated in East...
