TY - JOUR A1 - Virkkula, A. A1 - Backman, J. A1 - Aalto, P. P. A1 - Hulkkonen, M. A1 - Riuttanen, L. A1 - Nieminen, T. A1 - dal Maso, M. A1 - Sogacheva, L. A1 - de Leeuw, G. A1 - Kulmala, M. T1 - Seasonal cycle, size dependencies, and source analyses of aerosol optical properties at the SMEAR II measurement station in Hyytiälä, Finland JO - Atmos. Chem. Phys. J1 - ACP VL - 11 IS - 9 SP - 4445 EP - 4468 Y1 - 2011/05/12 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/11/4445/2011/ L1 - https://acp.copernicus.org/articles/11/4445/2011/acp-11-4445-2011.pdf DO - 10.5194/acp-11-4445-2011 ER -