Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone
Inferred total bromine (Brtot) was measured in the upper troposphere (UT) and lower stratosphere (LS) from a research aircraft over the North Atlantic and north western Europe in fall 2017 during the WISE (Wave-driven ISentropic Exchange) campaign. The LS weighted-mean Brtot is 19.2 +/- 1.2 ppt. A c...
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ftunivheidelb:oai:archiv.ub.uni-heidelberg.de:30093 2023-11-05T03:44:01+01:00 Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone Rotermund, Meike Kerrin 2021 application/pdf https://archiv.ub.uni-heidelberg.de/volltextserver/30093/ https://archiv.ub.uni-heidelberg.de/volltextserver/30093/1/index.html_dl%3D1 https://doi.org/10.11588/heidok.00030093 https://nbn-resolving.org/urn:nbn:de:bsz:16-heidok-300937 eng eng https://archiv.ub.uni-heidelberg.de/volltextserver/30093/1/index.html_dl%3D1 doi:10.11588/heidok.00030093 urn:nbn:de:bsz:16-heidok-300937 Rotermund, Meike Kerrin (2021) Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone. [Dissertation] info:eu-repo/semantics/openAccess http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html 530 530 Physics Dissertation info:eu-repo/semantics/doctoralThesis NonPeerReviewed 2021 ftunivheidelb https://doi.org/10.11588/heidok.00030093 2023-10-10T12:09:44Z Inferred total bromine (Brtot) was measured in the upper troposphere (UT) and lower stratosphere (LS) from a research aircraft over the North Atlantic and north western Europe in fall 2017 during the WISE (Wave-driven ISentropic Exchange) campaign. The LS weighted-mean Brtot is 19.2 +/- 1.2 ppt. A closer look into organic and inorganic bromine, as well as simultaneously measured transport and air mass lag-time tracers, suggests that bromine-rich air masses persistently protruded into the LS in fall creating a high bromine region (HBrR). A subsection, HBrR*, has a Brtot weighted average of 20.9 +/- 0.8 ppt. The most probable source region is former tropical UT air with a Brtot weighted mean of 21.6 +/- 0.7 ppt. A secondary smaller source is transport across the extratropical tropopause. Lagrangian transport modelling quantifies these multi-pathway contributions to the LS and HBrR. Further, the influences of the Asian monsoon and its tropical adjacent regions as well as tropical cyclones from Central America on bromine are discussed. And lastly, the consequences of ~1-2 ppt additional bromine in the tropical UT are simulated by a global chemistry transport model resulting in 3.1 +/- 0.7% ozone decrease within the 20 K potential temperature layer directly above the tropopause. Doctoral or Postdoctoral Thesis North Atlantic Heidelberg University: HeiDok |
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Open Polar |
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Heidelberg University: HeiDok |
op_collection_id |
ftunivheidelb |
language |
English |
topic |
530 530 Physics |
spellingShingle |
530 530 Physics Rotermund, Meike Kerrin Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone |
topic_facet |
530 530 Physics |
description |
Inferred total bromine (Brtot) was measured in the upper troposphere (UT) and lower stratosphere (LS) from a research aircraft over the North Atlantic and north western Europe in fall 2017 during the WISE (Wave-driven ISentropic Exchange) campaign. The LS weighted-mean Brtot is 19.2 +/- 1.2 ppt. A closer look into organic and inorganic bromine, as well as simultaneously measured transport and air mass lag-time tracers, suggests that bromine-rich air masses persistently protruded into the LS in fall creating a high bromine region (HBrR). A subsection, HBrR*, has a Brtot weighted average of 20.9 +/- 0.8 ppt. The most probable source region is former tropical UT air with a Brtot weighted mean of 21.6 +/- 0.7 ppt. A secondary smaller source is transport across the extratropical tropopause. Lagrangian transport modelling quantifies these multi-pathway contributions to the LS and HBrR. Further, the influences of the Asian monsoon and its tropical adjacent regions as well as tropical cyclones from Central America on bromine are discussed. And lastly, the consequences of ~1-2 ppt additional bromine in the tropical UT are simulated by a global chemistry transport model resulting in 3.1 +/- 0.7% ozone decrease within the 20 K potential temperature layer directly above the tropopause. |
format |
Doctoral or Postdoctoral Thesis |
author |
Rotermund, Meike Kerrin |
author_facet |
Rotermund, Meike Kerrin |
author_sort |
Rotermund, Meike Kerrin |
title |
Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone |
title_short |
Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone |
title_full |
Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone |
title_fullStr |
Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone |
title_full_unstemmed |
Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone |
title_sort |
organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: origins, transport pathways and consequences for ozone |
publishDate |
2021 |
url |
https://archiv.ub.uni-heidelberg.de/volltextserver/30093/ https://archiv.ub.uni-heidelberg.de/volltextserver/30093/1/index.html_dl%3D1 https://doi.org/10.11588/heidok.00030093 https://nbn-resolving.org/urn:nbn:de:bsz:16-heidok-300937 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://archiv.ub.uni-heidelberg.de/volltextserver/30093/1/index.html_dl%3D1 doi:10.11588/heidok.00030093 urn:nbn:de:bsz:16-heidok-300937 Rotermund, Meike Kerrin (2021) Organic, inorganic and total bromine in the extratropical tropopause and lowermost stratosphere in fall 2017: Origins, transport pathways and consequences for ozone. [Dissertation] |
op_rights |
info:eu-repo/semantics/openAccess http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html |
op_doi |
https://doi.org/10.11588/heidok.00030093 |
_version_ |
1781702996913029120 |