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Atmospheric mercury depletion event study in Ny-Alesund in spring 2005 Deposition and transformation of Hg in surface snow during springtime



Atmospheric mercury depletion event study in Ny-Alesund in spring 2005 Deposition and transformation of Hg in surface snow during springtime



Science Of The Total Environment7: 1 3, 167-177



A field campaign was conducted in Ny-Alesund (78 degrees 54'N, 11 degrees 53'E), Svalbard (Norway) during April and May 2005. An Atmospheric Mercury (Hg) Depletion Event (AMDE) was observed from the morning of April 24 until the evening of April 27. Transport of already Hg and ozone (O<sub>3</sub>) depleted air masses could explain this observed depletion. Due to a snowfall event during the AMDE, surface snow Hg concentrations increased two fold.

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