Ozone depletion events in the Arctic spring of 2019: a new modeling approach to bromine emissions
Ozone depletion events (ODEs) are a common occurrence in the boundary layer during Arctic spring. Ozone is depleted by bromine species, which are most likely emitted from snow, sea ice, or aerosols in an autocatalytic reaction cycle. Previous three-dimensional modeling studies of ODEs assumed an inf...
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2022
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00062853 2023-05-15T14:53:04+02:00 Ozone depletion events in the Arctic spring of 2019: a new modeling approach to bromine emissions Herrmann, Maximilian Schöne, Moritz Borger, Christian Warnach, Simon Wagner, Thomas Platt, Ulrich Gutheil, Eva 2022-10 electronic https://doi.org/10.5194/acp-22-13495-2022 https://noa.gwlb.de/receive/cop_mods_00062853 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062021/acp-22-13495-2022.pdf https://acp.copernicus.org/articles/22/13495/2022/acp-22-13495-2022.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-22-13495-2022 https://noa.gwlb.de/receive/cop_mods_00062853 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062021/acp-22-13495-2022.pdf https://acp.copernicus.org/articles/22/13495/2022/acp-22-13495-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/acp-22-13495-2022 2022-10-23T23:12:13Z Ozone depletion events (ODEs) are a common occurrence in the boundary layer during Arctic spring. Ozone is depleted by bromine species, which are most likely emitted from snow, sea ice, or aerosols in an autocatalytic reaction cycle. Previous three-dimensional modeling studies of ODEs assumed an infinite bromine source at the ground. In the present study, an alternative emission scheme is presented in which a finite amount of bromide in the snow is tracked over time. For this purpose, a modified version of the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) is used to study ODEs in the Arctic from February to May 2019. The model data are compared to in situ measurements, ozone sonde flights, and satellite data. A simulation of the ODEs in the Arctic spring of 2009 using the infinite-bromide assumption on first-year (FY) ice is transferred to the spring of 2019, which achieves good agreement with the observations; however, there is some disagreement in April 2009 and 2019 with respect to an overestimation concerning both the magnitude and the number of ODEs. New simulations using the finite-bromide assumption greatly improve agreement with in situ observations at Utqiaġvik, Alaska, Zeppelin Mountain, Svalbard, and Pallas, Finland, in April 2019, suggesting that bromide on the sea ice is depleted to an extent that reduces the bromine release. The new simulations also slightly improve the agreement with observations at these sites in February and March. A comparison to measurements near Eureka, Canada, and Station Nord, Greenland, shows that multi-year ice and possibly snow-covered land may be significant bromine sources. However, assuming higher releasable bromide near Eureka does not remove all disagreement with the observations. The numerical results are also compared to tropospheric-BrO vertical column densities generated with a new retrieval method from TROPOspheric Monitoring Instrument (TROPOMI) observations. BrO vertical column densities (VCDs) above 5×1013 molec. cm−2 observed by ... Article in Journal/Newspaper Arctic Greenland Sea ice Svalbard Alaska Niedersächsisches Online-Archiv NOA Arctic Canada Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) Greenland Station Nord ENVELOPE(-16.663,-16.663,81.599,81.599) Svalbard Atmospheric Chemistry and Physics 22 20 13495 13526 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Herrmann, Maximilian Schöne, Moritz Borger, Christian Warnach, Simon Wagner, Thomas Platt, Ulrich Gutheil, Eva Ozone depletion events in the Arctic spring of 2019: a new modeling approach to bromine emissions |
topic_facet |
article Verlagsveröffentlichung |
description |
Ozone depletion events (ODEs) are a common occurrence in the boundary layer during Arctic spring. Ozone is depleted by bromine species, which are most likely emitted from snow, sea ice, or aerosols in an autocatalytic reaction cycle. Previous three-dimensional modeling studies of ODEs assumed an infinite bromine source at the ground. In the present study, an alternative emission scheme is presented in which a finite amount of bromide in the snow is tracked over time. For this purpose, a modified version of the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) is used to study ODEs in the Arctic from February to May 2019. The model data are compared to in situ measurements, ozone sonde flights, and satellite data. A simulation of the ODEs in the Arctic spring of 2009 using the infinite-bromide assumption on first-year (FY) ice is transferred to the spring of 2019, which achieves good agreement with the observations; however, there is some disagreement in April 2009 and 2019 with respect to an overestimation concerning both the magnitude and the number of ODEs. New simulations using the finite-bromide assumption greatly improve agreement with in situ observations at Utqiaġvik, Alaska, Zeppelin Mountain, Svalbard, and Pallas, Finland, in April 2019, suggesting that bromide on the sea ice is depleted to an extent that reduces the bromine release. The new simulations also slightly improve the agreement with observations at these sites in February and March. A comparison to measurements near Eureka, Canada, and Station Nord, Greenland, shows that multi-year ice and possibly snow-covered land may be significant bromine sources. However, assuming higher releasable bromide near Eureka does not remove all disagreement with the observations. The numerical results are also compared to tropospheric-BrO vertical column densities generated with a new retrieval method from TROPOspheric Monitoring Instrument (TROPOMI) observations. BrO vertical column densities (VCDs) above 5×1013 molec. cm−2 observed by ... |
format |
Article in Journal/Newspaper |
author |
Herrmann, Maximilian Schöne, Moritz Borger, Christian Warnach, Simon Wagner, Thomas Platt, Ulrich Gutheil, Eva |
author_facet |
Herrmann, Maximilian Schöne, Moritz Borger, Christian Warnach, Simon Wagner, Thomas Platt, Ulrich Gutheil, Eva |
author_sort |
Herrmann, Maximilian |
title |
Ozone depletion events in the Arctic spring of 2019: a new modeling approach to bromine emissions |
title_short |
Ozone depletion events in the Arctic spring of 2019: a new modeling approach to bromine emissions |
title_full |
Ozone depletion events in the Arctic spring of 2019: a new modeling approach to bromine emissions |
title_fullStr |
Ozone depletion events in the Arctic spring of 2019: a new modeling approach to bromine emissions |
title_full_unstemmed |
Ozone depletion events in the Arctic spring of 2019: a new modeling approach to bromine emissions |
title_sort |
ozone depletion events in the arctic spring of 2019: a new modeling approach to bromine emissions |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-22-13495-2022 https://noa.gwlb.de/receive/cop_mods_00062853 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062021/acp-22-13495-2022.pdf https://acp.copernicus.org/articles/22/13495/2022/acp-22-13495-2022.pdf |
long_lat |
ENVELOPE(-85.940,-85.940,79.990,79.990) ENVELOPE(-16.663,-16.663,81.599,81.599) |
geographic |
Arctic Canada Eureka Greenland Station Nord Svalbard |
geographic_facet |
Arctic Canada Eureka Greenland Station Nord Svalbard |
genre |
Arctic Greenland Sea ice Svalbard Alaska |
genre_facet |
Arctic Greenland Sea ice Svalbard Alaska |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-22-13495-2022 https://noa.gwlb.de/receive/cop_mods_00062853 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062021/acp-22-13495-2022.pdf https://acp.copernicus.org/articles/22/13495/2022/acp-22-13495-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/acp-22-13495-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
20 |
container_start_page |
13495 |
op_container_end_page |
13526 |
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1766324484943380480 |