Fast depletion of gaseous elemental mercury in the Kongsvegen Glacier snowpack in Svalbard
International audience Gaseous elemental mercury (GEM, Hg°) was measured in the snowpack interstitial air on the Kongsvegen Glacier (Svalbard) between the surface and 190 cm depth. A rapid depletion of GEM from ∼5 to 0.4 ng.m−3 in the snowpack air was measured in less than 8 hours at a calculated de...
Published in: | Geophysical Research Letters |
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ftinsu:oai:HAL:insu-00375463v1 2024-04-28T08:20:14+00:00 Fast depletion of gaseous elemental mercury in the Kongsvegen Glacier snowpack in Svalbard Fain, Xavier P. Ferrari, Christophe Gauchard, Pierre-Alexis Magand, Olivier Boutron, Claude, F. 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) Polytech Grenoble Unité de Formation et de Recherche de Physique Université Joseph Fourier - Grenoble 1 (UJF) 2006 https://insu.hal.science/insu-00375463 https://insu.hal.science/insu-00375463/document https://insu.hal.science/insu-00375463/file/2005GL025223.pdf https://doi.org/10.1029/2005GL025223 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2005GL025223 insu-00375463 https://insu.hal.science/insu-00375463 https://insu.hal.science/insu-00375463/document https://insu.hal.science/insu-00375463/file/2005GL025223.pdf doi:10.1029/2005GL025223 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-00375463 Geophysical Research Letters, 2006, 33 (L06826), 1 à 4 p. ⟨10.1029/2005GL025223⟩ Chemical kinetic and photochemical properties Constituent sources and sinks Geochemical cycles Troposphere Snow [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2006 ftinsu https://doi.org/10.1029/2005GL025223 2024-04-05T00:38:11Z International audience Gaseous elemental mercury (GEM, Hg°) was measured in the snowpack interstitial air on the Kongsvegen Glacier (Svalbard) between the surface and 190 cm depth. A rapid depletion of GEM from ∼5 to 0.4 ng.m−3 in the snowpack air was measured in less than 8 hours at a calculated depletion rate of ∼0.5–0.7 ng.m−3.h−1 while concentration of GEM above the snow stayed constant about 1.7 ng.m−3. This depletion could only be explained by chemical processes and this study suggests that Br. could be the most important reactant for the oxidation of GEM in the interstitial snow air. The lifetime of GEM was estimated to be ∼10 minutes with second order reaction rate constant between GEM and Br. of about ∼2 × 10−11 cm−3.molecule−1.s−1. These first experimental kinetic values for GEM oxidation in the snow air are in good agreement with both theoretical and modelling studies previously reported. Article in Journal/Newspaper glacier Svalbard Institut national des sciences de l'Univers: HAL-INSU Geophysical Research Letters 33 6 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Chemical kinetic and photochemical properties Constituent sources and sinks Geochemical cycles Troposphere Snow [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
Chemical kinetic and photochemical properties Constituent sources and sinks Geochemical cycles Troposphere Snow [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Fain, Xavier P. Ferrari, Christophe Gauchard, Pierre-Alexis Magand, Olivier Boutron, Claude, F. Fast depletion of gaseous elemental mercury in the Kongsvegen Glacier snowpack in Svalbard |
topic_facet |
Chemical kinetic and photochemical properties Constituent sources and sinks Geochemical cycles Troposphere Snow [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Gaseous elemental mercury (GEM, Hg°) was measured in the snowpack interstitial air on the Kongsvegen Glacier (Svalbard) between the surface and 190 cm depth. A rapid depletion of GEM from ∼5 to 0.4 ng.m−3 in the snowpack air was measured in less than 8 hours at a calculated depletion rate of ∼0.5–0.7 ng.m−3.h−1 while concentration of GEM above the snow stayed constant about 1.7 ng.m−3. This depletion could only be explained by chemical processes and this study suggests that Br. could be the most important reactant for the oxidation of GEM in the interstitial snow air. The lifetime of GEM was estimated to be ∼10 minutes with second order reaction rate constant between GEM and Br. of about ∼2 × 10−11 cm−3.molecule−1.s−1. These first experimental kinetic values for GEM oxidation in the snow air are in good agreement with both theoretical and modelling studies previously reported. |
author2 |
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) Polytech Grenoble Unité de Formation et de Recherche de Physique Université Joseph Fourier - Grenoble 1 (UJF) |
format |
Article in Journal/Newspaper |
author |
Fain, Xavier P. Ferrari, Christophe Gauchard, Pierre-Alexis Magand, Olivier Boutron, Claude, F. |
author_facet |
Fain, Xavier P. Ferrari, Christophe Gauchard, Pierre-Alexis Magand, Olivier Boutron, Claude, F. |
author_sort |
Fain, Xavier |
title |
Fast depletion of gaseous elemental mercury in the Kongsvegen Glacier snowpack in Svalbard |
title_short |
Fast depletion of gaseous elemental mercury in the Kongsvegen Glacier snowpack in Svalbard |
title_full |
Fast depletion of gaseous elemental mercury in the Kongsvegen Glacier snowpack in Svalbard |
title_fullStr |
Fast depletion of gaseous elemental mercury in the Kongsvegen Glacier snowpack in Svalbard |
title_full_unstemmed |
Fast depletion of gaseous elemental mercury in the Kongsvegen Glacier snowpack in Svalbard |
title_sort |
fast depletion of gaseous elemental mercury in the kongsvegen glacier snowpack in svalbard |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://insu.hal.science/insu-00375463 https://insu.hal.science/insu-00375463/document https://insu.hal.science/insu-00375463/file/2005GL025223.pdf https://doi.org/10.1029/2005GL025223 |
genre |
glacier Svalbard |
genre_facet |
glacier Svalbard |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-00375463 Geophysical Research Letters, 2006, 33 (L06826), 1 à 4 p. ⟨10.1029/2005GL025223⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2005GL025223 insu-00375463 https://insu.hal.science/insu-00375463 https://insu.hal.science/insu-00375463/document https://insu.hal.science/insu-00375463/file/2005GL025223.pdf doi:10.1029/2005GL025223 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2005GL025223 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
6 |
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1797583239635795968 |