Polar nighttime chemistry produces intense reactive bromine events
International audience By examining the origin of air masses that arrive at Utqiaġvik (formerly Barrow) Alaska soon after polar sunrise (late January/early February), we identified periods when air arriving at Utqiaġvik had previously resided primarily at higher latitudes in near total darkness. Upo...
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Online Access: | https://insu.hal.science/insu-01877525 https://insu.hal.science/insu-01877525/document https://insu.hal.science/insu-01877525/file/2018GL079444.pdf https://doi.org/10.1029/2018GL079444 |
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ftsorbonneuniv:oai:HAL:insu-01877525v1 2023-11-05T03:40:49+01:00 Polar nighttime chemistry produces intense reactive bromine events Simpson, W., R. Friess, U. Thomas, Jennie L. Lampel, J. Platt, U. Geophysical Institute Fairbanks University of Alaska Fairbanks (UAF) Department of Chemistry and Biochemistry Fairbanks Institut für Umweltphysik Heidelberg Universität Heidelberg Heidelberg = Heidelberg University TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2018 https://insu.hal.science/insu-01877525 https://insu.hal.science/insu-01877525/document https://insu.hal.science/insu-01877525/file/2018GL079444.pdf https://doi.org/10.1029/2018GL079444 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2018GL079444 insu-01877525 https://insu.hal.science/insu-01877525 https://insu.hal.science/insu-01877525/document https://insu.hal.science/insu-01877525/file/2018GL079444.pdf doi:10.1029/2018GL079444 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-01877525 Geophysical Research Letters, 2018, 45 (18), pp.9987-9994. ⟨10.1029/2018GL079444⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2018 ftsorbonneuniv https://doi.org/10.1029/2018GL079444 2023-10-10T23:38:02Z International audience By examining the origin of air masses that arrive at Utqiaġvik (formerly Barrow) Alaska soon after polar sunrise (late January/early February), we identified periods when air arriving at Utqiaġvik had previously resided primarily at higher latitudes in near total darkness. Upon illumination, these air masses produced high concentrations of reactive bromine, which was detected by differential optical absorption spectroscopy (DOAS) as bromine monoxide (BrO). These observations are consistent with nighttime production of a photolabile reactive bromine precursor (e.g. Br2 or BrCl). A large polar‐night source of photolabile reactive bromine precursors would contribute seed reactive bromine to daytime reactive bromine events and could export reactive halogens to lower latitudes and the free troposphere. Article in Journal/Newspaper Barrow polar night Alaska HAL Sorbonne Université Geophysical Research Letters 45 18 9987 9994 |
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Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Simpson, W., R. Friess, U. Thomas, Jennie L. Lampel, J. Platt, U. Polar nighttime chemistry produces intense reactive bromine events |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience By examining the origin of air masses that arrive at Utqiaġvik (formerly Barrow) Alaska soon after polar sunrise (late January/early February), we identified periods when air arriving at Utqiaġvik had previously resided primarily at higher latitudes in near total darkness. Upon illumination, these air masses produced high concentrations of reactive bromine, which was detected by differential optical absorption spectroscopy (DOAS) as bromine monoxide (BrO). These observations are consistent with nighttime production of a photolabile reactive bromine precursor (e.g. Br2 or BrCl). A large polar‐night source of photolabile reactive bromine precursors would contribute seed reactive bromine to daytime reactive bromine events and could export reactive halogens to lower latitudes and the free troposphere. |
author2 |
Geophysical Institute Fairbanks University of Alaska Fairbanks (UAF) Department of Chemistry and Biochemistry Fairbanks Institut für Umweltphysik Heidelberg Universität Heidelberg Heidelberg = Heidelberg University TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Simpson, W., R. Friess, U. Thomas, Jennie L. Lampel, J. Platt, U. |
author_facet |
Simpson, W., R. Friess, U. Thomas, Jennie L. Lampel, J. Platt, U. |
author_sort |
Simpson, W., R. |
title |
Polar nighttime chemistry produces intense reactive bromine events |
title_short |
Polar nighttime chemistry produces intense reactive bromine events |
title_full |
Polar nighttime chemistry produces intense reactive bromine events |
title_fullStr |
Polar nighttime chemistry produces intense reactive bromine events |
title_full_unstemmed |
Polar nighttime chemistry produces intense reactive bromine events |
title_sort |
polar nighttime chemistry produces intense reactive bromine events |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://insu.hal.science/insu-01877525 https://insu.hal.science/insu-01877525/document https://insu.hal.science/insu-01877525/file/2018GL079444.pdf https://doi.org/10.1029/2018GL079444 |
genre |
Barrow polar night Alaska |
genre_facet |
Barrow polar night Alaska |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-01877525 Geophysical Research Letters, 2018, 45 (18), pp.9987-9994. ⟨10.1029/2018GL079444⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2018GL079444 insu-01877525 https://insu.hal.science/insu-01877525 https://insu.hal.science/insu-01877525/document https://insu.hal.science/insu-01877525/file/2018GL079444.pdf doi:10.1029/2018GL079444 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2018GL079444 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
18 |
container_start_page |
9987 |
op_container_end_page |
9994 |
_version_ |
1781697038282391552 |