The specific surface area and chemical composition of diamond dust near Barrow, Alaska
International audience Diamond dust (DD) refers to tiny ice crystals that form frequently in the Polar troposphere under clear sky conditions. They provide surfaces for chemical reactions and scatter light. We have measured the specific surface area (SSA) of DD at Barrow in March–April 2009. We have...
Published in: | Journal of Geophysical Research |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2011
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Online Access: | https://hal.archives-ouvertes.fr/hal-03121365 https://hal.archives-ouvertes.fr/hal-03121365/document https://hal.archives-ouvertes.fr/hal-03121365/file/jgrd17349.pdf https://doi.org/10.1029/2011JD016162 |
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ftccsdartic:oai:HAL:hal-03121365v1 |
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openpolar |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Domine, Florent Gallet, Jean-Charles Barret, Manuel Houdier, Stéphan Voisin, Didier Douglas, Thomas Blum, Joel Beine, Harry Anastasio, Cort Bréon, François-Marie The specific surface area and chemical composition of diamond dust near Barrow, Alaska |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Diamond dust (DD) refers to tiny ice crystals that form frequently in the Polar troposphere under clear sky conditions. They provide surfaces for chemical reactions and scatter light. We have measured the specific surface area (SSA) of DD at Barrow in March–April 2009. We have also measured its chemical composition in mineral and organic ions, dissolved organic carbon (DOC), aldehydes, H2O2, and the absorption spectra of water‐soluble chromophores. Mercury concentrations were also measured in spring 2006, when conditions were similar. The SSA of DD ranges from 79.9 to 223 m2 kg−1. The calculated ice surface area in the atmosphere reaches 11000 (±70%) μm2 cm−3, much higher than the aerosol surface area. However, the impact of DD on the downwelling and upwelling light fluxes in the UV and visible is negligible. The composition of DD is markedly different from that of snow on the surface. Its concentrations in mineral ions are much lower, and its overall composition is acidic. Its concentrations in aldehydes, DOC, H2O2 and mercury are much higher than in surface snows. Our interpretation is that DOC from the oceanic surface microlayer, coming from open leads in the ice off of Barrow, is taken up by DD. Active chemistry in the atmosphere takes place on DD crystal surfaces, explaining its high concentrations in aldehydes and mercury. After deposition, active photochemistry modifies DD composition, as seen from the modifications in its absorption spectra and aldehyde and H2O2 content. This probably leads to the emissions of reactive species to the atmosphere. |
author2 |
Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-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 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) University of Michigan Ann Arbor University of Michigan System Department of Land, Air and Water Resources University of California Davis (UC Davis) University of California-University of California Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) |
format |
Article in Journal/Newspaper |
author |
Domine, Florent Gallet, Jean-Charles Barret, Manuel Houdier, Stéphan Voisin, Didier Douglas, Thomas Blum, Joel Beine, Harry Anastasio, Cort Bréon, François-Marie |
author_facet |
Domine, Florent Gallet, Jean-Charles Barret, Manuel Houdier, Stéphan Voisin, Didier Douglas, Thomas Blum, Joel Beine, Harry Anastasio, Cort Bréon, François-Marie |
author_sort |
Domine, Florent |
title |
The specific surface area and chemical composition of diamond dust near Barrow, Alaska |
title_short |
The specific surface area and chemical composition of diamond dust near Barrow, Alaska |
title_full |
The specific surface area and chemical composition of diamond dust near Barrow, Alaska |
title_fullStr |
The specific surface area and chemical composition of diamond dust near Barrow, Alaska |
title_full_unstemmed |
The specific surface area and chemical composition of diamond dust near Barrow, Alaska |
title_sort |
specific surface area and chemical composition of diamond dust near barrow, alaska |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.archives-ouvertes.fr/hal-03121365 https://hal.archives-ouvertes.fr/hal-03121365/document https://hal.archives-ouvertes.fr/hal-03121365/file/jgrd17349.pdf https://doi.org/10.1029/2011JD016162 |
genre |
Barrow Alaska |
genre_facet |
Barrow Alaska |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.archives-ouvertes.fr/hal-03121365 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2011, 116 (D14), pp.D00R06. ⟨10.1029/2011JD016162⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2011JD016162 hal-03121365 https://hal.archives-ouvertes.fr/hal-03121365 https://hal.archives-ouvertes.fr/hal-03121365/document https://hal.archives-ouvertes.fr/hal-03121365/file/jgrd17349.pdf doi:10.1029/2011JD016162 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2011JD016162 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
_version_ |
1766371712353435648 |
spelling |
ftccsdartic:oai:HAL:hal-03121365v1 2023-05-15T15:39:41+02:00 The specific surface area and chemical composition of diamond dust near Barrow, Alaska Domine, Florent Gallet, Jean-Charles Barret, Manuel Houdier, Stéphan Voisin, Didier Douglas, Thomas Blum, Joel Beine, Harry Anastasio, Cort Bréon, François-Marie Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-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 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) University of Michigan Ann Arbor University of Michigan System Department of Land, Air and Water Resources University of California Davis (UC Davis) University of California-University of California Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) 2011 https://hal.archives-ouvertes.fr/hal-03121365 https://hal.archives-ouvertes.fr/hal-03121365/document https://hal.archives-ouvertes.fr/hal-03121365/file/jgrd17349.pdf https://doi.org/10.1029/2011JD016162 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2011JD016162 hal-03121365 https://hal.archives-ouvertes.fr/hal-03121365 https://hal.archives-ouvertes.fr/hal-03121365/document https://hal.archives-ouvertes.fr/hal-03121365/file/jgrd17349.pdf doi:10.1029/2011JD016162 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.archives-ouvertes.fr/hal-03121365 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2011, 116 (D14), pp.D00R06. ⟨10.1029/2011JD016162⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2011 ftccsdartic https://doi.org/10.1029/2011JD016162 2021-12-19T00:32:37Z International audience Diamond dust (DD) refers to tiny ice crystals that form frequently in the Polar troposphere under clear sky conditions. They provide surfaces for chemical reactions and scatter light. We have measured the specific surface area (SSA) of DD at Barrow in March–April 2009. We have also measured its chemical composition in mineral and organic ions, dissolved organic carbon (DOC), aldehydes, H2O2, and the absorption spectra of water‐soluble chromophores. Mercury concentrations were also measured in spring 2006, when conditions were similar. The SSA of DD ranges from 79.9 to 223 m2 kg−1. The calculated ice surface area in the atmosphere reaches 11000 (±70%) μm2 cm−3, much higher than the aerosol surface area. However, the impact of DD on the downwelling and upwelling light fluxes in the UV and visible is negligible. The composition of DD is markedly different from that of snow on the surface. Its concentrations in mineral ions are much lower, and its overall composition is acidic. Its concentrations in aldehydes, DOC, H2O2 and mercury are much higher than in surface snows. Our interpretation is that DOC from the oceanic surface microlayer, coming from open leads in the ice off of Barrow, is taken up by DD. Active chemistry in the atmosphere takes place on DD crystal surfaces, explaining its high concentrations in aldehydes and mercury. After deposition, active photochemistry modifies DD composition, as seen from the modifications in its absorption spectra and aldehyde and H2O2 content. This probably leads to the emissions of reactive species to the atmosphere. Article in Journal/Newspaper Barrow Alaska Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Geophysical Research 116 |