1. Study of the origin of atmospheric mercury depletion events recorded in Ny-Ålesund, Svalbard, spring 2003
- Author
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Katrine Aspmo, Torunn Berg, Christophe Ferrari, C. M. Banic, Alexandra Steffen, Pierre-Alexis Gauchard, Claude F. Boutron, Ralf Ebinghaus, Sonia Nagorski, Christian Temme, Lars Kaleschke, Enno Bahlmann, Patrick Baussand, Olivier Magand, Frédéric Planchon, Johan Ström, Aurélien Dommergue, 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), Norwegian Institute for Air Research (NILU), Department of Chemistry [Oslo], Faculty of Mathematics and Natural Sciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO), GKSS-Research Center, Institute for Coastal Research, Air Quality Research Branch, Meteorological Service of Canada, Environment and Climate Change Canada, Polytech' Grenoble, Université Joseph Fourier - Grenoble 1 (UJF), Institute of Applied Environmental Research [Stockholm] (ITM), Stockholm University, Institute of Environmental Physics [Bremen] (IUP), University of Bremen, Environmental Sciences Department, University of Ca’ Foscari [Venice, Italy], Groupe de Recherche sur l'Environnement et la Chimie Atmosphérique (GRECA), UFR de Mécanique et de Physique, Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-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 Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-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 Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS), and Institute of Applied Environmental Research (ITM)
- Subjects
Atmospheric Science ,010504 meteorology & atmospheric sciences ,Transport ,chemistry.chemical_element ,Atmospheric mercury ,010501 environmental sciences ,Atmospheric sciences ,01 natural sciences ,Troposphere ,Ozone ,0105 earth and related environmental sciences ,General Environmental Science ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,Ice cloud ,Advection ,Mercury ,Snow ,Atmospheric mercury depletion events ,eye diseases ,Aerosol ,Mercury (element) ,Particles ,chemistry ,13. Climate action ,Atmospheric chemistry ,sense organs - Abstract
International audience; An international campaign involving six teams was organized in Ny-Ålesund, Svalbard, in order to understand better the origin of atmospheric mercury depletion events (AMDEs). Special emphasis was given to determining the source region of the observed events and the physical and chemical processes leading to AMDEs. Five AMDEs were recorded during a one-month field experiment (10 April-10 May, 2003). The different events presented various characteristics, especially in terms of mercury species formation, atmospheric particle variations and meteorological conditions. After careful examination of each event, we postulate that two were probably due to advection of already depleted air masses and three were a product of local or regional chemistry. The roles of different surfaces (frost flowers, snow, ice aerosol in clouds) involved in heterogeneous reactions leading to AMDEs are also discussed. We speculate that ice clouds may explain the particle variations observed during the three more local events.
- Published
- 2005
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