Laakso, L.; Hirsikko, T.; Nieminen, S.; Gagné, S.; Lehtipalo, K.
(Copernicus Publications, 2011)
This review is based on ca. 260 publications, 93 of which included data on the temporal and spatial variation of the concentration of small ions (<1.6 nm in diameter) especially in the lower troposphere, chemical composition, ...