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Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case
Recent research has provided evidence of the self-lofting capacity of smoke aerosols in the stratosphere and their self-confinement by persistent anticyclones, which prolongs their atmospheric residence time and radiative effects. By contrast, the volcanic aerosols—composed mostly of non-absorptive...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9794726/ https://www.ncbi.nlm.nih.gov/pubmed/36575284 http://dx.doi.org/10.1038/s41598-022-27021-0 |
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author | Khaykin, S. M. de Laat, A. T. J. Godin-Beekmann, S. Hauchecorne, A. Ratynski, M. |
author_facet | Khaykin, S. M. de Laat, A. T. J. Godin-Beekmann, S. Hauchecorne, A. Ratynski, M. |
author_sort | Khaykin, S. M. |
collection | PubMed |
description | Recent research has provided evidence of the self-lofting capacity of smoke aerosols in the stratosphere and their self-confinement by persistent anticyclones, which prolongs their atmospheric residence time and radiative effects. By contrast, the volcanic aerosols—composed mostly of non-absorptive sulphuric acid droplets—were never reported to be subject of dynamical confinement. Here we use high-resolution satellite observations to show that the eruption of Raikoke volcano in June 2019 produced a long-lived stratospheric anticyclone containing 24% of the total erupted mass of sulphur dioxide. The anticyclone persisted for more than 3 months, circumnavigated the globe three times, and ascended diabatically to 27 km altitude through radiative heating of volcanic ash contained by the plume. The mechanism of dynamical confinement has important implications for the planetary-scale transport of volcanic emissions, their stratospheric residence time, and atmospheric radiation balance. It also provides a challenge or “out of sample test” for weather and climate models that should be capable of reproducing similar structures. |
format | Online Article Text |
id | pubmed-9794726 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-97947262022-12-29 Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case Khaykin, S. M. de Laat, A. T. J. Godin-Beekmann, S. Hauchecorne, A. Ratynski, M. Sci Rep Article Recent research has provided evidence of the self-lofting capacity of smoke aerosols in the stratosphere and their self-confinement by persistent anticyclones, which prolongs their atmospheric residence time and radiative effects. By contrast, the volcanic aerosols—composed mostly of non-absorptive sulphuric acid droplets—were never reported to be subject of dynamical confinement. Here we use high-resolution satellite observations to show that the eruption of Raikoke volcano in June 2019 produced a long-lived stratospheric anticyclone containing 24% of the total erupted mass of sulphur dioxide. The anticyclone persisted for more than 3 months, circumnavigated the globe three times, and ascended diabatically to 27 km altitude through radiative heating of volcanic ash contained by the plume. The mechanism of dynamical confinement has important implications for the planetary-scale transport of volcanic emissions, their stratospheric residence time, and atmospheric radiation balance. It also provides a challenge or “out of sample test” for weather and climate models that should be capable of reproducing similar structures. Nature Publishing Group UK 2022-12-27 /pmc/articles/PMC9794726/ /pubmed/36575284 http://dx.doi.org/10.1038/s41598-022-27021-0 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Khaykin, S. M. de Laat, A. T. J. Godin-Beekmann, S. Hauchecorne, A. Ratynski, M. Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case |
title | Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case |
title_full | Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case |
title_fullStr | Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case |
title_full_unstemmed | Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case |
title_short | Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case |
title_sort | unexpected self-lofting and dynamical confinement of volcanic plumes: the raikoke 2019 case |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9794726/ https://www.ncbi.nlm.nih.gov/pubmed/36575284 http://dx.doi.org/10.1038/s41598-022-27021-0 |
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