The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition
International audience Ice cores are one of the most valuable paleo-archives. Records from ice cores provide information not only about the amount of dust in the atmosphere, but also about dust sources and their changes in the past. In 2009, a 182 m long ice core was recovered from the western plate...
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ftccsdartic:oai:HAL:hal-02410039v1 2023-05-15T16:38:42+02:00 The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition Kutuzov, Stanislav Legrand, Michel Preunkert, Susanne Ginot, Patrick Mikhalenko, Vladimir Shukurov, Karim Poliukhov, Aleksei Toropov, Pavel Laboratoire d'Ingénierie des Matériaux (LIM) Centre National de la Recherche Scientifique (CNRS) Institut des Géosciences de l’Environnement (IGE) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Unité de Recherche Great Ice 2019 https://hal.archives-ouvertes.fr/hal-02410039 https://hal.archives-ouvertes.fr/hal-02410039/document https://hal.archives-ouvertes.fr/hal-02410039/file/acp-19-14133-2019.pdf https://doi.org/10.5194/acp-19-14133-2019 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-19-14133-2019 hal-02410039 https://hal.archives-ouvertes.fr/hal-02410039 https://hal.archives-ouvertes.fr/hal-02410039/document https://hal.archives-ouvertes.fr/hal-02410039/file/acp-19-14133-2019.pdf doi:10.5194/acp-19-14133-2019 http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess CC-BY-ND ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.archives-ouvertes.fr/hal-02410039 Atmospheric Chemistry and Physics, European Geosciences Union, 2019, 19 (22), pp.14133-14148. ⟨10.5194/acp-19-14133-2019⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2019 ftccsdartic https://doi.org/10.5194/acp-19-14133-2019 2021-11-07T00:39:46Z International audience Ice cores are one of the most valuable paleo-archives. Records from ice cores provide information not only about the amount of dust in the atmosphere, but also about dust sources and their changes in the past. In 2009, a 182 m long ice core was recovered from the western plateau of Mt Elbrus (5115 m a.s.l.). This record was further extended after a shallow ice core was drilled in 2013. Here we analyse Ca 2+ concentrations, a commonly used proxy of dust, recorded in these Elbrus ice records over the time period of 1774-2013 CE. The Ca 2+ record reveals quasi-decadal variability with a generally increasing trend. Using multiple regression analysis, we found a statistically significant spatial correlation of the Elbrus Ca 2+ summer concentrations with precipitation and soil moisture content in the Levant region (specifically Syria and Iraq). The Ca 2+ record also correlates with drought indices in North Africa (r = 0.67, p<0.001) and Middle East regions (r = 0.71, p<0.001). Dust concentrations prominently increase in the ice core over the past 200 years, confirming that the recent droughts in the Fertile Crescent (1998-2012 CE) present the most severe aridity experienced in at least the past two centuries. For the most recent 33 years recorded (1979-2012 CE), significant correlations exist between Ca 2+ and Pacific circulation indices (Pacific Decadal Oscillation, Southern Oscillation Index and Niño 4), which suggests that the increased frequency of extreme El Niño and La Niña events due to a warming climate has extended their influence to the Middle East. Evidence demonstrates that the increase in Ca 2+ concentration in the ice core cannot be attributed to human activities, such as coal combustion and cement production. Article in Journal/Newspaper ice core Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Pacific Atmospheric Chemistry and Physics 19 22 14133 14148 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Kutuzov, Stanislav Legrand, Michel Preunkert, Susanne Ginot, Patrick Mikhalenko, Vladimir Shukurov, Karim Poliukhov, Aleksei Toropov, Pavel The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Ice cores are one of the most valuable paleo-archives. Records from ice cores provide information not only about the amount of dust in the atmosphere, but also about dust sources and their changes in the past. In 2009, a 182 m long ice core was recovered from the western plateau of Mt Elbrus (5115 m a.s.l.). This record was further extended after a shallow ice core was drilled in 2013. Here we analyse Ca 2+ concentrations, a commonly used proxy of dust, recorded in these Elbrus ice records over the time period of 1774-2013 CE. The Ca 2+ record reveals quasi-decadal variability with a generally increasing trend. Using multiple regression analysis, we found a statistically significant spatial correlation of the Elbrus Ca 2+ summer concentrations with precipitation and soil moisture content in the Levant region (specifically Syria and Iraq). The Ca 2+ record also correlates with drought indices in North Africa (r = 0.67, p<0.001) and Middle East regions (r = 0.71, p<0.001). Dust concentrations prominently increase in the ice core over the past 200 years, confirming that the recent droughts in the Fertile Crescent (1998-2012 CE) present the most severe aridity experienced in at least the past two centuries. For the most recent 33 years recorded (1979-2012 CE), significant correlations exist between Ca 2+ and Pacific circulation indices (Pacific Decadal Oscillation, Southern Oscillation Index and Niño 4), which suggests that the increased frequency of extreme El Niño and La Niña events due to a warming climate has extended their influence to the Middle East. Evidence demonstrates that the increase in Ca 2+ concentration in the ice core cannot be attributed to human activities, such as coal combustion and cement production. |
author2 |
Laboratoire d'Ingénierie des Matériaux (LIM) Centre National de la Recherche Scientifique (CNRS) Institut des Géosciences de l’Environnement (IGE) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Unité de Recherche Great Ice |
format |
Article in Journal/Newspaper |
author |
Kutuzov, Stanislav Legrand, Michel Preunkert, Susanne Ginot, Patrick Mikhalenko, Vladimir Shukurov, Karim Poliukhov, Aleksei Toropov, Pavel |
author_facet |
Kutuzov, Stanislav Legrand, Michel Preunkert, Susanne Ginot, Patrick Mikhalenko, Vladimir Shukurov, Karim Poliukhov, Aleksei Toropov, Pavel |
author_sort |
Kutuzov, Stanislav |
title |
The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition |
title_short |
The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition |
title_full |
The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition |
title_fullStr |
The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition |
title_full_unstemmed |
The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition |
title_sort |
elbrus (caucasus, russia) ice core record – part 2: history of desert dust deposition |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-02410039 https://hal.archives-ouvertes.fr/hal-02410039/document https://hal.archives-ouvertes.fr/hal-02410039/file/acp-19-14133-2019.pdf https://doi.org/10.5194/acp-19-14133-2019 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
ice core |
genre_facet |
ice core |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.archives-ouvertes.fr/hal-02410039 Atmospheric Chemistry and Physics, European Geosciences Union, 2019, 19 (22), pp.14133-14148. ⟨10.5194/acp-19-14133-2019⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-19-14133-2019 hal-02410039 https://hal.archives-ouvertes.fr/hal-02410039 https://hal.archives-ouvertes.fr/hal-02410039/document https://hal.archives-ouvertes.fr/hal-02410039/file/acp-19-14133-2019.pdf doi:10.5194/acp-19-14133-2019 |
op_rights |
http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess |
op_rightsnorm |
CC-BY-ND |
op_doi |
https://doi.org/10.5194/acp-19-14133-2019 |
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Atmospheric Chemistry and Physics |
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19 |
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22 |
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14133 |
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14148 |
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1766029028430446592 |