Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016
Activated chlorine compounds in the polar winter stratosphere drive catalytic cycles that deplete ozone and methane, whose abundances are highly relevant to the evolution of global climate. The present work introduces a novel dataset of in situ measurements of relevant chlorine species in the lowerm...
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ftdoajarticles:oai:doaj.org/article:dba6c191211b491ab8cd644cc4e853a2 2023-05-15T14:58:41+02:00 Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016 A. Marsing T. Jurkat-Witschas J.-U. Grooß S. Kaufmann R. Heller A. Engel P. Hoor J. Krause C. Voigt 2019-08-01T00:00:00Z https://doi.org/10.5194/acp-19-10757-2019 https://doaj.org/article/dba6c191211b491ab8cd644cc4e853a2 EN eng Copernicus Publications https://www.atmos-chem-phys.net/19/10757/2019/acp-19-10757-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-10757-2019 1680-7316 1680-7324 https://doaj.org/article/dba6c191211b491ab8cd644cc4e853a2 Atmospheric Chemistry and Physics, Vol 19, Pp 10757-10772 (2019) Physics QC1-999 Chemistry QD1-999 article 2019 ftdoajarticles https://doi.org/10.5194/acp-19-10757-2019 2022-12-31T15:02:49Z Activated chlorine compounds in the polar winter stratosphere drive catalytic cycles that deplete ozone and methane, whose abundances are highly relevant to the evolution of global climate. The present work introduces a novel dataset of in situ measurements of relevant chlorine species in the lowermost Arctic stratosphere from the aircraft mission POLSTRACC–GW-LCYCLE–SALSA during winter 2015/2016. The major stages of chemical evolution of the lower polar vortex are presented in a consistent series of high-resolution mass spectrometric observations of HCl and ClONO 2 . Simultaneous measurements of CFC-12 are used to derive total inorganic chlorine ( Cl y ) and active chlorine ( ClO x ). The new data highlight an altitude dependence of the pathway for chlorine deactivation in the lowermost vortex with HCl dominating below the 380 K isentropic surface and ClONO 2 prevailing above. Further, we show that the Chemical Lagrangian Model of the Stratosphere (CLaMS) is generally able to reproduce the chemical evolution of the lower polar vortex chlorine budget, except for a bias in HCl concentrations. The model is used to relate local measurements to the vortex-wide evolution. The results are aimed at fostering our understanding of the climate impact of chlorine chemistry, providing new observational data to complement satellite data and assess model performance in the climate-sensitive upper troposphere and lower stratosphere region. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 19 16 10757 10772 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 A. Marsing T. Jurkat-Witschas J.-U. Grooß S. Kaufmann R. Heller A. Engel P. Hoor J. Krause C. Voigt Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016 |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Activated chlorine compounds in the polar winter stratosphere drive catalytic cycles that deplete ozone and methane, whose abundances are highly relevant to the evolution of global climate. The present work introduces a novel dataset of in situ measurements of relevant chlorine species in the lowermost Arctic stratosphere from the aircraft mission POLSTRACC–GW-LCYCLE–SALSA during winter 2015/2016. The major stages of chemical evolution of the lower polar vortex are presented in a consistent series of high-resolution mass spectrometric observations of HCl and ClONO 2 . Simultaneous measurements of CFC-12 are used to derive total inorganic chlorine ( Cl y ) and active chlorine ( ClO x ). The new data highlight an altitude dependence of the pathway for chlorine deactivation in the lowermost vortex with HCl dominating below the 380 K isentropic surface and ClONO 2 prevailing above. Further, we show that the Chemical Lagrangian Model of the Stratosphere (CLaMS) is generally able to reproduce the chemical evolution of the lower polar vortex chlorine budget, except for a bias in HCl concentrations. The model is used to relate local measurements to the vortex-wide evolution. The results are aimed at fostering our understanding of the climate impact of chlorine chemistry, providing new observational data to complement satellite data and assess model performance in the climate-sensitive upper troposphere and lower stratosphere region. |
format |
Article in Journal/Newspaper |
author |
A. Marsing T. Jurkat-Witschas J.-U. Grooß S. Kaufmann R. Heller A. Engel P. Hoor J. Krause C. Voigt |
author_facet |
A. Marsing T. Jurkat-Witschas J.-U. Grooß S. Kaufmann R. Heller A. Engel P. Hoor J. Krause C. Voigt |
author_sort |
A. Marsing |
title |
Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016 |
title_short |
Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016 |
title_full |
Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016 |
title_fullStr |
Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016 |
title_full_unstemmed |
Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016 |
title_sort |
chlorine partitioning in the lowermost arctic vortex during the cold winter 2015/2016 |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-10757-2019 https://doaj.org/article/dba6c191211b491ab8cd644cc4e853a2 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics, Vol 19, Pp 10757-10772 (2019) |
op_relation |
https://www.atmos-chem-phys.net/19/10757/2019/acp-19-10757-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-10757-2019 1680-7316 1680-7324 https://doaj.org/article/dba6c191211b491ab8cd644cc4e853a2 |
op_doi |
https://doi.org/10.5194/acp-19-10757-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
16 |
container_start_page |
10757 |
op_container_end_page |
10772 |
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1766330813802086400 |