Measurements of OH and RO 2 radicals at Dome C, East Antarctica
Concentrations of OH radicals and the sum of peroxy radicals, RO 2 , were measured in the boundary layer for the first time on the East Antarctic Plateau at the Concordia Station (Dome C, 75.10° S, 123.31° E) during the austral summer 2011/2012. The median concentrations of OH and RO 2 radicals were...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , |
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Language: | English |
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HAL CCSD
2014
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Subjects: | |
Online Access: | https://hal.science/hal-01002612 https://hal.science/hal-01002612/document https://hal.science/hal-01002612/file/acp-14-12373-2014.pdf https://doi.org/10.5194/acp-14-12373-2014 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
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ftinraparis |
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] Kukui, Alexandre Legrand, Michel Preunkert, S. Frey, M. M. Loisil, R. Gil Roca, Jaime Jourdain, Benjamin King, M. D. France, J. L. Ancellet, Gérard Measurements of OH and RO 2 radicals at Dome C, East Antarctica |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
Concentrations of OH radicals and the sum of peroxy radicals, RO 2 , were measured in the boundary layer for the first time on the East Antarctic Plateau at the Concordia Station (Dome C, 75.10° S, 123.31° E) during the austral summer 2011/2012. The median concentrations of OH and RO 2 radicals were 3.1 × 106 molecule cm −3 and 9.9 × 107 molecule cm −3 , respectively. These values are comparable to those observed at the South Pole, confirming that the elevated oxidative capacity of the Antarctic atmospheric boundary layer found at the South Pole is not restricted to the South Pole but common over the high Antarctic plateau. At Concordia, the concentration of radicals showed distinct diurnal profiles with the median maximum of 5.2 × 106 molecule cm −3 at 11:00 and the median minimum of 1.1 × 106 molecule cm −3 at 01:00 for OH radicals and 1.7 × 108 molecule cm −3 and 2.5 × 107 molecule cm −3 for RO 2 radicals at 13:00 and 23:00, respectively (all times are local times). Concurrent measurements of O 3 , HONO, NO, NO 2 , HCHO and H 2 O 2 demonstrated that the major primary source of OH and RO 2 radicals at Dome C was the photolysis of HONO, HCHO and H 2 O 2 , with the photolysis of HONO contributing ∼75% of total primary radical production. However, photochemical modelling with accounting for all these radical sources overestimates the concentrations of OH and RO 2 radicals by a factor of 2 compared to field observations. Neglecting the OH production from HONO in the photochemical modelling results in an underestimation of the concentrations of OH and RO 2 radicals by a factor of 2. To explain the observations of radicals in this case an additional source of OH equivalent to about 25% of measured photolysis of HONO is required. Even with a factor of 4 reduction in the concentrations of HONO, the photolysis of HONO represents the major primary radical source at Dome C. Another major factor leading to the large concentration of OH radicals measured at Dome C was large concentrations of NO molecules and fast recycling ... |
author2 |
TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Division technique INSU/SDU (DTI) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Earth Sciences Egham Royal Holloway University of London (RHUL) Institut Polaire Français-Paul EmileVictor (IPEV) within programs No. 414 and 903. M. D. Kingand J. L. France wish to thank NERC (NE/F0004796/1 andNE/F0104788) and NERC FSF (555.0608 and 584.0609). ANR-09-BLAN-0226,OPALE(2009) ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010) |
format |
Article in Journal/Newspaper |
author |
Kukui, Alexandre Legrand, Michel Preunkert, S. Frey, M. M. Loisil, R. Gil Roca, Jaime Jourdain, Benjamin King, M. D. France, J. L. Ancellet, Gérard |
author_facet |
Kukui, Alexandre Legrand, Michel Preunkert, S. Frey, M. M. Loisil, R. Gil Roca, Jaime Jourdain, Benjamin King, M. D. France, J. L. Ancellet, Gérard |
author_sort |
Kukui, Alexandre |
title |
Measurements of OH and RO 2 radicals at Dome C, East Antarctica |
title_short |
Measurements of OH and RO 2 radicals at Dome C, East Antarctica |
title_full |
Measurements of OH and RO 2 radicals at Dome C, East Antarctica |
title_fullStr |
Measurements of OH and RO 2 radicals at Dome C, East Antarctica |
title_full_unstemmed |
Measurements of OH and RO 2 radicals at Dome C, East Antarctica |
title_sort |
measurements of oh and ro 2 radicals at dome c, east antarctica |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01002612 https://hal.science/hal-01002612/document https://hal.science/hal-01002612/file/acp-14-12373-2014.pdf https://doi.org/10.5194/acp-14-12373-2014 |
genre |
Antarc* Antarctic Antarctica East Antarctica South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica South pole South pole |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-01002612 Atmospheric Chemistry and Physics, 2014, 14, pp.12373-12392. ⟨10.5194/acp-14-12373-2014⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-14-12373-2014 hal-01002612 https://hal.science/hal-01002612 https://hal.science/hal-01002612/document https://hal.science/hal-01002612/file/acp-14-12373-2014.pdf doi:10.5194/acp-14-12373-2014 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-14-12373-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
22 |
container_start_page |
12373 |
op_container_end_page |
12392 |
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1810289534353539072 |
spelling |
ftinraparis:oai:HAL:hal-01002612v1 2024-09-15T17:48:23+00:00 Measurements of OH and RO 2 radicals at Dome C, East Antarctica Kukui, Alexandre Legrand, Michel Preunkert, S. Frey, M. M. Loisil, R. Gil Roca, Jaime Jourdain, Benjamin King, M. D. France, J. L. Ancellet, Gérard TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Division technique INSU/SDU (DTI) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Earth Sciences Egham Royal Holloway University of London (RHUL) Institut Polaire Français-Paul EmileVictor (IPEV) within programs No. 414 and 903. M. D. Kingand J. L. France wish to thank NERC (NE/F0004796/1 andNE/F0104788) and NERC FSF (555.0608 and 584.0609). ANR-09-BLAN-0226,OPALE(2009) ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010) 2014 https://hal.science/hal-01002612 https://hal.science/hal-01002612/document https://hal.science/hal-01002612/file/acp-14-12373-2014.pdf https://doi.org/10.5194/acp-14-12373-2014 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-14-12373-2014 hal-01002612 https://hal.science/hal-01002612 https://hal.science/hal-01002612/document https://hal.science/hal-01002612/file/acp-14-12373-2014.pdf doi:10.5194/acp-14-12373-2014 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-01002612 Atmospheric Chemistry and Physics, 2014, 14, pp.12373-12392. ⟨10.5194/acp-14-12373-2014⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2014 ftinraparis https://doi.org/10.5194/acp-14-12373-2014 2024-06-25T14:59:26Z Concentrations of OH radicals and the sum of peroxy radicals, RO 2 , were measured in the boundary layer for the first time on the East Antarctic Plateau at the Concordia Station (Dome C, 75.10° S, 123.31° E) during the austral summer 2011/2012. The median concentrations of OH and RO 2 radicals were 3.1 × 106 molecule cm −3 and 9.9 × 107 molecule cm −3 , respectively. These values are comparable to those observed at the South Pole, confirming that the elevated oxidative capacity of the Antarctic atmospheric boundary layer found at the South Pole is not restricted to the South Pole but common over the high Antarctic plateau. At Concordia, the concentration of radicals showed distinct diurnal profiles with the median maximum of 5.2 × 106 molecule cm −3 at 11:00 and the median minimum of 1.1 × 106 molecule cm −3 at 01:00 for OH radicals and 1.7 × 108 molecule cm −3 and 2.5 × 107 molecule cm −3 for RO 2 radicals at 13:00 and 23:00, respectively (all times are local times). Concurrent measurements of O 3 , HONO, NO, NO 2 , HCHO and H 2 O 2 demonstrated that the major primary source of OH and RO 2 radicals at Dome C was the photolysis of HONO, HCHO and H 2 O 2 , with the photolysis of HONO contributing ∼75% of total primary radical production. However, photochemical modelling with accounting for all these radical sources overestimates the concentrations of OH and RO 2 radicals by a factor of 2 compared to field observations. Neglecting the OH production from HONO in the photochemical modelling results in an underestimation of the concentrations of OH and RO 2 radicals by a factor of 2. To explain the observations of radicals in this case an additional source of OH equivalent to about 25% of measured photolysis of HONO is required. Even with a factor of 4 reduction in the concentrations of HONO, the photolysis of HONO represents the major primary radical source at Dome C. Another major factor leading to the large concentration of OH radicals measured at Dome C was large concentrations of NO molecules and fast recycling ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica South pole South pole Institut National de la Recherche Agronomique: ProdINRA Atmospheric Chemistry and Physics 14 22 12373 12392 |