Publication in Report Series in Aerosol Science Meinander O, Heikkilä A, Riihelä A, Aarva A, Kontu A, Kyrö E, Lihavainen H, Kivekäs N, Virkkula A, Järvinen O, Svensson J, De Leeuw G. ABOUT SEASONAL ARCTIC SNOW UV ALBEDO AT SODANKYLÄ AND UV-VIS ALBEDO CHANGES INDUCED BY DEPOSITION OF SOOT. Proceedings of Finnish Center of Excellence in 'Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change', and Nordic Center of Excellence in 'Cryosphere-Atmosphere Interactions in a Changing Arctic Climate, Annual Meetings 2012, Report Series in Aerosol Science, 134, 470 - 473, 2012.
SNICAR online simulated snow albedo spectra at 0.3–1.3 µm demonstrate that the absorption caused by impurities in snow ist the bigger the shorter the wavelength. Blue: Clean snow. Red: EC 87 ppb by thermo-optical method. Green: the assumed realistic EC. Purple: MAC=10 produced albedo values close to the lowest measured A~0.4 at UV. All cases are for clear sky, SZA 55 deg, grain radius=1.5 mm, snowdepth=10 cm, snow density=350 kg/m3.
SILAM modeling results showed that the high concentrations of carbon in Sodankylä Arctic Center weekly snow samples in 2009-2011, during snow time, were due to air masses originating from the Kola Peninsula, Russia, where mining and refining industries are located.
Figures adapted from Meinander et al. 2013, ACP.