Atmospheric particle evolution during a nighttime atmospheric mercury depletion event in sub-Arctic at Kuujjuarapik/Whapmagoostui, Québec, Canada - Archive ouverte HAL Access content directly
Journal Articles Science of the Total Environment Year : 2005

Atmospheric particle evolution during a nighttime atmospheric mercury depletion event in sub-Arctic at Kuujjuarapik/Whapmagoostui, Québec, Canada

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Abstract

During a field experiment at Kuujjuarapik/Whapmagoostui (55.31°N, 77.75°W), Québec, we observed increases of concentrations of particles with diameters larger than 0.3 μm in the ambient air during a nighttime atmospheric mercury depletion event (AMDE). These increases were strongly correlated with decreases of ozone and atmospheric mercury, and we also observed a change in the particle size distribution during this AMDE. Assuming that these phenomena imply either a chemical link or an association through transport, we also studied the nature of this AMDE. We hypothesize that the observed AMDE was a result of an influx of already depleted air masses and that it was not a product of local chemical reactions.

Dates and versions

insu-00374351 , version 1 (08-04-2009)

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Pierre-Alexis Gauchard, Christophe P. Ferrari, Aurélien Dommergue, Laurier Poissant, Martin Pilote, et al.. Atmospheric particle evolution during a nighttime atmospheric mercury depletion event in sub-Arctic at Kuujjuarapik/Whapmagoostui, Québec, Canada. Science of the Total Environment, 2005, 336 (1-3), pp.215 à 224. ⟨10.1016/j.scitotenv.2004.05.022⟩. ⟨insu-00374351⟩
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