TY - JOUR A1 - Hõrrak, U. A1 - Aalto, P. P. A1 - Salm, J. A1 - Komsaare, K. A1 - Tammet, H. A1 - Mäkelä, J. M. A1 - Laakso, L. A1 - Kulmala, M. T1 - Characterization of positive air ions in boreal forest air at the Hyytiälä SMEAR station JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 7 IS - 4 SP - 9465 EP - 9517 Y1 - 2007/07/03 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/7/9465/2007/ L1 - http://www.atmos-chem-phys-discuss.net/7/9465/2007/acpd-7-9465-2007.pdf ER -