Large-scale drivers of Caucasus climate variability in meteorological records and Mt El'brus ice cores
International audience A 181.8 m ice core was recovered from a borehole drilled into bedrock on the western plateau of Mt El'brus (43 • 20 53.9 N, 42 • 25 36.0 E; 5115 m a.s.l.) in the Caucasus, Russia, in 2009 (Mikhalenko et al., 2015). Here, we report on the results of the water stable isotop...
Published in: | Climate of the Past |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2017
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Online Access: | https://hal.science/hal-03105278 https://hal.science/hal-03105278/document https://hal.science/hal-03105278/file/cp-13-473-2017.pdf https://doi.org/10.5194/CP-13-473-2017 |
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Université de Nantes: HAL-UNIV-NANTES |
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English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Kozachek, Anna Mikhalenko, Vladimir Masson-Delmotte, Valérie Ekaykin, Alexey Ginot, Patrick Kutuzov, Stanislav Legrand, Michel Lipenkov, Vladimir Preunkert, Susanne Large-scale drivers of Caucasus climate variability in meteorological records and Mt El'brus ice cores |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience A 181.8 m ice core was recovered from a borehole drilled into bedrock on the western plateau of Mt El'brus (43 • 20 53.9 N, 42 • 25 36.0 E; 5115 m a.s.l.) in the Caucasus, Russia, in 2009 (Mikhalenko et al., 2015). Here, we report on the results of the water stable isotope composition from this ice core with additional data from the shallow cores. The distinct seasonal cycle of the isotopic composition allows dating by annual layer counting. Dating has been performed for the upper 126 m of the deep core combined with 20 m from the shallow cores. The whole record covers 100 years, from 2013 back to 1914. Due to the high accumulation rate (1380 mm w.e. year −1) and limited melting, we obtained isotopic composition and accumulation rate records with seasonal resolution. These values were compared with available meteorological data from 13 weather stations in the region and also with atmosphere circulation indices, backtrajectory calculations, and Global Network of Isotopes in Precipitation (GNIP) data in order to decipher the drivers of accumulation and ice core isotopic composition in the Caucasus region. In the warm season (May-October) the isotopic composition depends on local temperatures, but the correlation is not persistent over time, while in the cold season (November-April), atmospheric circulation is the predominant driver of the ice core's isotopic composition. The snow accumulation rate correlates well with the precipitation rate in the region all year round, which made it possible to reconstruct and expand the precipitation record at the Caucasus highlands from 1914 until 1966, when reliable meteorological observations of precipitation at high elevation began. |
author2 |
Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Russian Academy of Sciences Moscow (RAS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Observatoire des Sciences de l'Univers de Grenoble (OSUG ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) |
format |
Article in Journal/Newspaper |
author |
Kozachek, Anna Mikhalenko, Vladimir Masson-Delmotte, Valérie Ekaykin, Alexey Ginot, Patrick Kutuzov, Stanislav Legrand, Michel Lipenkov, Vladimir Preunkert, Susanne |
author_facet |
Kozachek, Anna Mikhalenko, Vladimir Masson-Delmotte, Valérie Ekaykin, Alexey Ginot, Patrick Kutuzov, Stanislav Legrand, Michel Lipenkov, Vladimir Preunkert, Susanne |
author_sort |
Kozachek, Anna |
title |
Large-scale drivers of Caucasus climate variability in meteorological records and Mt El'brus ice cores |
title_short |
Large-scale drivers of Caucasus climate variability in meteorological records and Mt El'brus ice cores |
title_full |
Large-scale drivers of Caucasus climate variability in meteorological records and Mt El'brus ice cores |
title_fullStr |
Large-scale drivers of Caucasus climate variability in meteorological records and Mt El'brus ice cores |
title_full_unstemmed |
Large-scale drivers of Caucasus climate variability in meteorological records and Mt El'brus ice cores |
title_sort |
large-scale drivers of caucasus climate variability in meteorological records and mt el'brus ice cores |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.science/hal-03105278 https://hal.science/hal-03105278/document https://hal.science/hal-03105278/file/cp-13-473-2017.pdf https://doi.org/10.5194/CP-13-473-2017 |
genre |
ice core |
genre_facet |
ice core |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03105278 Climate of the Past, 2017, 13 (5), pp.473-489. ⟨10.5194/CP-13-473-2017⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/CP-13-473-2017 hal-03105278 https://hal.science/hal-03105278 https://hal.science/hal-03105278/document https://hal.science/hal-03105278/file/cp-13-473-2017.pdf doi:10.5194/CP-13-473-2017 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/CP-13-473-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
5 |
container_start_page |
473 |
op_container_end_page |
489 |
_version_ |
1766029214404837376 |
spelling |
ftunivnantes:oai:HAL:hal-03105278v1 2023-05-15T16:38:52+02:00 Large-scale drivers of Caucasus climate variability in meteorological records and Mt El'brus ice cores Kozachek, Anna Mikhalenko, Vladimir Masson-Delmotte, Valérie Ekaykin, Alexey Ginot, Patrick Kutuzov, Stanislav Legrand, Michel Lipenkov, Vladimir Preunkert, Susanne Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Russian Academy of Sciences Moscow (RAS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Observatoire des Sciences de l'Univers de Grenoble (OSUG ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) 2017 https://hal.science/hal-03105278 https://hal.science/hal-03105278/document https://hal.science/hal-03105278/file/cp-13-473-2017.pdf https://doi.org/10.5194/CP-13-473-2017 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/CP-13-473-2017 hal-03105278 https://hal.science/hal-03105278 https://hal.science/hal-03105278/document https://hal.science/hal-03105278/file/cp-13-473-2017.pdf doi:10.5194/CP-13-473-2017 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03105278 Climate of the Past, 2017, 13 (5), pp.473-489. ⟨10.5194/CP-13-473-2017⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2017 ftunivnantes https://doi.org/10.5194/CP-13-473-2017 2023-03-01T02:44:32Z International audience A 181.8 m ice core was recovered from a borehole drilled into bedrock on the western plateau of Mt El'brus (43 • 20 53.9 N, 42 • 25 36.0 E; 5115 m a.s.l.) in the Caucasus, Russia, in 2009 (Mikhalenko et al., 2015). Here, we report on the results of the water stable isotope composition from this ice core with additional data from the shallow cores. The distinct seasonal cycle of the isotopic composition allows dating by annual layer counting. Dating has been performed for the upper 126 m of the deep core combined with 20 m from the shallow cores. The whole record covers 100 years, from 2013 back to 1914. Due to the high accumulation rate (1380 mm w.e. year −1) and limited melting, we obtained isotopic composition and accumulation rate records with seasonal resolution. These values were compared with available meteorological data from 13 weather stations in the region and also with atmosphere circulation indices, backtrajectory calculations, and Global Network of Isotopes in Precipitation (GNIP) data in order to decipher the drivers of accumulation and ice core isotopic composition in the Caucasus region. In the warm season (May-October) the isotopic composition depends on local temperatures, but the correlation is not persistent over time, while in the cold season (November-April), atmospheric circulation is the predominant driver of the ice core's isotopic composition. The snow accumulation rate correlates well with the precipitation rate in the region all year round, which made it possible to reconstruct and expand the precipitation record at the Caucasus highlands from 1914 until 1966, when reliable meteorological observations of precipitation at high elevation began. Article in Journal/Newspaper ice core Université de Nantes: HAL-UNIV-NANTES Climate of the Past 13 5 473 489 |