The Role of Snow in Controlling Halogen Chemistry and Boundary Layer Oxidation During Arctic Spring: A 1D Modeling Case Study
International audience Reactive chlorine and bromine species emitted from snow and aerosols can significantly alter the oxidative capacity of the polar boundary layer. However, halogen production mechanisms from snow remain highly uncertain, making it difficult for most models to include description...
Published in: | Journal of Geophysical Research: Atmospheres |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03706386 https://hal-insu.archives-ouvertes.fr/insu-03706386/document https://hal-insu.archives-ouvertes.fr/insu-03706386/file/JGR%20Atmospheres%20-%202022%20-%20Ahmed%20-%20The%20Role%20of%20Snow%20in%20Controlling%20Halogen%20Chemistry%20and%20Boundary%20Layer%20Oxidation%20During.pdf https://doi.org/10.1029/2021JD036140 |
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ftunivnantes:oai:HAL:insu-03706386v1 2023-05-15T14:55:38+02:00 The Role of Snow in Controlling Halogen Chemistry and Boundary Layer Oxidation During Arctic Spring: A 1D Modeling Case Study Ahmed, Shaddy Thomas, Jennie L. Tuite, Katie Stutz, Jochen Flocke, Frank Orlando, John J. Hornbrook, Rebecca S. Apel, Eric C. Emmons, Louisa K. Helmig, Detlev Boylan, Patrick Huey, L. Gregory Hall, Samuel R. Ullmann, Kirk Cantrell, Christopher A. Fried, Alan Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) 2022 https://hal-insu.archives-ouvertes.fr/insu-03706386 https://hal-insu.archives-ouvertes.fr/insu-03706386/document https://hal-insu.archives-ouvertes.fr/insu-03706386/file/JGR%20Atmospheres%20-%202022%20-%20Ahmed%20-%20The%20Role%20of%20Snow%20in%20Controlling%20Halogen%20Chemistry%20and%20Boundary%20Layer%20Oxidation%20During.pdf https://doi.org/10.1029/2021JD036140 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2021JD036140 insu-03706386 https://hal-insu.archives-ouvertes.fr/insu-03706386 https://hal-insu.archives-ouvertes.fr/insu-03706386/document https://hal-insu.archives-ouvertes.fr/insu-03706386/file/JGR%20Atmospheres%20-%202022%20-%20Ahmed%20-%20The%20Role%20of%20Snow%20in%20Controlling%20Halogen%20Chemistry%20and%20Boundary%20Layer%20Oxidation%20During.pdf BIBCODE: 2022JGRD.12736140A doi:10.1029/2021JD036140 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal-insu.archives-ouvertes.fr/insu-03706386 Journal of Geophysical Research: Atmospheres, 2022, 127, ⟨10.1029/2021JD036140⟩ halogens modeling Arctic snow emissions atmospheric chemistry [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftunivnantes https://doi.org/10.1029/2021JD036140 2023-03-01T01:36:24Z International audience Reactive chlorine and bromine species emitted from snow and aerosols can significantly alter the oxidative capacity of the polar boundary layer. However, halogen production mechanisms from snow remain highly uncertain, making it difficult for most models to include descriptions of halogen snow emissions and to understand the impact on atmospheric chemistry. We investigate the influence of Arctic halogen emissions from snow on boundary layer oxidation processes using a one-dimensional atmospheric chemistry and transport model (PACT-1D). To understand the combined impact of snow emissions and boundary layer dynamics on atmospheric chemistry, we model Cl 2 and Br 2 primary emissions from snow and include heterogeneous recycling of halogens on both snow and aerosols. We focus on a 2-day case study from the 2009 Ocean-Atmosphere-Sea Ice-Snowpack campaign at Utqiaġvik, Alaska. The model reproduces both the diurnal cycle and high quantity of Cl 2 observed, along with the measured concentrations of Br 2 , BrO, and HOBr. Due to the combined effects of emissions, recycling, vertical mixing, and atmospheric chemistry, reactive chlorine is typically confined to the lowest 15 m of the atmosphere, while bromine can impact chemistry up to and above the surface inversion height. Upon including halogen emissions and recycling, the concentration of HO x (HO x = OH + HO 2 ) at the surface increases by as much as a factor of 30 at mid-day. The change in HO x due to halogen chemistry, as well as chlorine atoms derived from snow emissions, significantly reduce volatile organic compound lifetimes within a shallow layer near the surface. Article in Journal/Newspaper Arctic Sea ice Alaska Université de Nantes: HAL-UNIV-NANTES Arctic Journal of Geophysical Research: Atmospheres 127 5 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
halogens modeling Arctic snow emissions atmospheric chemistry [SDU]Sciences of the Universe [physics] |
spellingShingle |
halogens modeling Arctic snow emissions atmospheric chemistry [SDU]Sciences of the Universe [physics] Ahmed, Shaddy Thomas, Jennie L. Tuite, Katie Stutz, Jochen Flocke, Frank Orlando, John J. Hornbrook, Rebecca S. Apel, Eric C. Emmons, Louisa K. Helmig, Detlev Boylan, Patrick Huey, L. Gregory Hall, Samuel R. Ullmann, Kirk Cantrell, Christopher A. Fried, Alan The Role of Snow in Controlling Halogen Chemistry and Boundary Layer Oxidation During Arctic Spring: A 1D Modeling Case Study |
topic_facet |
halogens modeling Arctic snow emissions atmospheric chemistry [SDU]Sciences of the Universe [physics] |
description |
International audience Reactive chlorine and bromine species emitted from snow and aerosols can significantly alter the oxidative capacity of the polar boundary layer. However, halogen production mechanisms from snow remain highly uncertain, making it difficult for most models to include descriptions of halogen snow emissions and to understand the impact on atmospheric chemistry. We investigate the influence of Arctic halogen emissions from snow on boundary layer oxidation processes using a one-dimensional atmospheric chemistry and transport model (PACT-1D). To understand the combined impact of snow emissions and boundary layer dynamics on atmospheric chemistry, we model Cl 2 and Br 2 primary emissions from snow and include heterogeneous recycling of halogens on both snow and aerosols. We focus on a 2-day case study from the 2009 Ocean-Atmosphere-Sea Ice-Snowpack campaign at Utqiaġvik, Alaska. The model reproduces both the diurnal cycle and high quantity of Cl 2 observed, along with the measured concentrations of Br 2 , BrO, and HOBr. Due to the combined effects of emissions, recycling, vertical mixing, and atmospheric chemistry, reactive chlorine is typically confined to the lowest 15 m of the atmosphere, while bromine can impact chemistry up to and above the surface inversion height. Upon including halogen emissions and recycling, the concentration of HO x (HO x = OH + HO 2 ) at the surface increases by as much as a factor of 30 at mid-day. The change in HO x due to halogen chemistry, as well as chlorine atoms derived from snow emissions, significantly reduce volatile organic compound lifetimes within a shallow layer near the surface. |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) |
format |
Article in Journal/Newspaper |
author |
Ahmed, Shaddy Thomas, Jennie L. Tuite, Katie Stutz, Jochen Flocke, Frank Orlando, John J. Hornbrook, Rebecca S. Apel, Eric C. Emmons, Louisa K. Helmig, Detlev Boylan, Patrick Huey, L. Gregory Hall, Samuel R. Ullmann, Kirk Cantrell, Christopher A. Fried, Alan |
author_facet |
Ahmed, Shaddy Thomas, Jennie L. Tuite, Katie Stutz, Jochen Flocke, Frank Orlando, John J. Hornbrook, Rebecca S. Apel, Eric C. Emmons, Louisa K. Helmig, Detlev Boylan, Patrick Huey, L. Gregory Hall, Samuel R. Ullmann, Kirk Cantrell, Christopher A. Fried, Alan |
author_sort |
Ahmed, Shaddy |
title |
The Role of Snow in Controlling Halogen Chemistry and Boundary Layer Oxidation During Arctic Spring: A 1D Modeling Case Study |
title_short |
The Role of Snow in Controlling Halogen Chemistry and Boundary Layer Oxidation During Arctic Spring: A 1D Modeling Case Study |
title_full |
The Role of Snow in Controlling Halogen Chemistry and Boundary Layer Oxidation During Arctic Spring: A 1D Modeling Case Study |
title_fullStr |
The Role of Snow in Controlling Halogen Chemistry and Boundary Layer Oxidation During Arctic Spring: A 1D Modeling Case Study |
title_full_unstemmed |
The Role of Snow in Controlling Halogen Chemistry and Boundary Layer Oxidation During Arctic Spring: A 1D Modeling Case Study |
title_sort |
role of snow in controlling halogen chemistry and boundary layer oxidation during arctic spring: a 1d modeling case study |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03706386 https://hal-insu.archives-ouvertes.fr/insu-03706386/document https://hal-insu.archives-ouvertes.fr/insu-03706386/file/JGR%20Atmospheres%20-%202022%20-%20Ahmed%20-%20The%20Role%20of%20Snow%20in%20Controlling%20Halogen%20Chemistry%20and%20Boundary%20Layer%20Oxidation%20During.pdf https://doi.org/10.1029/2021JD036140 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice Alaska |
genre_facet |
Arctic Sea ice Alaska |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal-insu.archives-ouvertes.fr/insu-03706386 Journal of Geophysical Research: Atmospheres, 2022, 127, ⟨10.1029/2021JD036140⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2021JD036140 insu-03706386 https://hal-insu.archives-ouvertes.fr/insu-03706386 https://hal-insu.archives-ouvertes.fr/insu-03706386/document https://hal-insu.archives-ouvertes.fr/insu-03706386/file/JGR%20Atmospheres%20-%202022%20-%20Ahmed%20-%20The%20Role%20of%20Snow%20in%20Controlling%20Halogen%20Chemistry%20and%20Boundary%20Layer%20Oxidation%20During.pdf BIBCODE: 2022JGRD.12736140A doi:10.1029/2021JD036140 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2021JD036140 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
127 |
container_issue |
5 |
_version_ |
1766327665765122048 |