The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition
<p>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...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2019-11-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/19/14133/2019/acp-19-14133-2019.pdf |
| _version_ | 1819040187476344832 |
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| author | S. Kutuzov M. Legrand M. Legrand S. Preunkert S. Preunkert P. Ginot P. Ginot P. Ginot V. Mikhalenko K. Shukurov A. Poliukhov A. Poliukhov P. Toropov P. Toropov |
| author_facet | S. Kutuzov M. Legrand M. Legrand S. Preunkert S. Preunkert P. Ginot P. Ginot P. Ginot V. Mikhalenko K. Shukurov A. Poliukhov A. Poliukhov P. Toropov P. Toropov |
| author_sort | S. Kutuzov |
| collection | DOAJ |
| description | <p>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 <span class="inline-formula">Ca<sup>2+</sup></span> concentrations, a
commonly used proxy of dust, recorded in these Elbrus ice records over the
time period of 1774–2013 CE. The <span class="inline-formula">Ca<sup>2+</sup></span> record reveals quasi-decadal
variability with a generally increasing trend. Using multiple regression
analysis, we found a statistically significant spatial correlation of the
Elbrus <span class="inline-formula">Ca<sup>2+</sup></span> summer concentrations with precipitation and soil
moisture content in the Levant region (specifically Syria and Iraq). The
<span class="inline-formula">Ca<sup>2+</sup></span> record also correlates with drought indices in North Africa
(<span class="inline-formula"><i>r</i>=0.67</span>, <span class="inline-formula"><i>p</i><i><</i>0.001</span>) and Middle East regions (<span class="inline-formula"><i>r</i>=0.71</span>, <span class="inline-formula"><i>p</i><i><</i>0.001</span>). 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 <span class="inline-formula">Ca<sup>2+</sup></span> 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
<span class="inline-formula">Ca<sup>2+</sup></span> concentration in the ice core cannot be attributed to human
activities, such as coal combustion and cement production.</p> |
| first_indexed | 2024-12-21T09:05:07Z |
| format | Article |
| id | doaj.art-884911170bc04215844c7351bb2c0b8b |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-21T09:05:07Z |
| publishDate | 2019-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-884911170bc04215844c7351bb2c0b8b2022-12-21T19:09:23ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242019-11-0119141331414810.5194/acp-19-14133-2019The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust depositionS. Kutuzov0M. Legrand1M. Legrand2S. Preunkert3S. Preunkert4P. Ginot5P. Ginot6P. Ginot7V. Mikhalenko8K. Shukurov9A. Poliukhov10A. Poliukhov11P. Toropov12P. Toropov13Institute of Geography, Russian Academy of Sciences, Moscow, 119017, RussiaUniversité Grenoble Alpes, CNRS, IRD, Grenoble INP, Institut des Géosciences de l'Environnement, 38000 Grenoble, France Université Grenoble Alpes, CNRS, IRD, Observatoire des Sciences de l'Univers de Grenoble, Grenoble, 38400, FranceUniversité Grenoble Alpes, CNRS, IRD, Grenoble INP, Institut des Géosciences de l'Environnement, 38000 Grenoble, France Université Grenoble Alpes, CNRS, IRD, Observatoire des Sciences de l'Univers de Grenoble, Grenoble, 38400, FranceUniversité Grenoble Alpes, CNRS, IRD, Grenoble INP, Institut des Géosciences de l'Environnement, 38000 Grenoble, France Université Grenoble Alpes, CNRS, IRD, Observatoire des Sciences de l'Univers de Grenoble, Grenoble, 38400, FranceObservatoire des Sciences de l'Univers de Grenoble, IRD/UGA/CNRS, Grenoble, 38400, FranceInstitute of Geography, Russian Academy of Sciences, Moscow, 119017, RussiaA. M. Obukhov Institute of Atmospheric Physics of Russian Academy of Sciences, Moscow, 119017, RussiaFaculty of Geography, Lomonosov Moscow State University, Moscow, 119991, RussiaHydrometeorological Research Center of Russian Federation, Moscow, 123242, RussiaInstitute of Geography, Russian Academy of Sciences, Moscow, 119017, RussiaFaculty of Geography, Lomonosov Moscow State University, Moscow, 119991, Russia<p>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 <span class="inline-formula">Ca<sup>2+</sup></span> concentrations, a commonly used proxy of dust, recorded in these Elbrus ice records over the time period of 1774–2013 CE. The <span class="inline-formula">Ca<sup>2+</sup></span> record reveals quasi-decadal variability with a generally increasing trend. Using multiple regression analysis, we found a statistically significant spatial correlation of the Elbrus <span class="inline-formula">Ca<sup>2+</sup></span> summer concentrations with precipitation and soil moisture content in the Levant region (specifically Syria and Iraq). The <span class="inline-formula">Ca<sup>2+</sup></span> record also correlates with drought indices in North Africa (<span class="inline-formula"><i>r</i>=0.67</span>, <span class="inline-formula"><i>p</i><i><</i>0.001</span>) and Middle East regions (<span class="inline-formula"><i>r</i>=0.71</span>, <span class="inline-formula"><i>p</i><i><</i>0.001</span>). 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 <span class="inline-formula">Ca<sup>2+</sup></span> 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 <span class="inline-formula">Ca<sup>2+</sup></span> concentration in the ice core cannot be attributed to human activities, such as coal combustion and cement production.</p>https://www.atmos-chem-phys.net/19/14133/2019/acp-19-14133-2019.pdf |
| spellingShingle | S. Kutuzov M. Legrand M. Legrand S. Preunkert S. Preunkert P. Ginot P. Ginot P. Ginot V. Mikhalenko K. Shukurov A. Poliukhov A. Poliukhov P. Toropov P. Toropov The Elbrus (Caucasus, Russia) ice core record – Part 2: history of desert dust deposition Atmospheric Chemistry and Physics |
| title | 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_short | 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 |
| url | https://www.atmos-chem-phys.net/19/14133/2019/acp-19-14133-2019.pdf |
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