Long-term monitoring of aerosol optical characteristics by using sky radiometer at Ny-Ålesund, Svalbard

Sky radiometer measurement has been continued at Ny-Ålesund, Svalbard (78.93N, 11.86E, Alt. 30 m) in the Arctic region, since March 2000. In this study, we present the temporal variation and the relationship of Ängström parameters (i.e., aerosol optical thickness and Ångström exponent) at Ny-Ålesund. The results of long-term measurements show clear seasonal trends of the aerosol optical thickness at 0.5 μm with maximum in spring and minimum at the end of summer, and of the Ångström exponent with temporal increase in spring to summer.