Waterfalls as sources of small charged aerosol particles

L. Laakso (1) , A. Hirsikko (1) , T. Grönholm (1) , M. Kulmala (1) , A. Luts (2) , T.-E. Parts (2)

1 Department of Physical Sciences [Helsinki]
2 Laboratory of Environmental Physics [Tartu]

In this study, we measured the mobility distributions of cluster and intermediate ions with an ion spectrometer near a waterfall. We observed that the concentration of negative 1.5?10 nm ions was one-hundred fold higher than a reference point 100 m away from the waterfall. Also, the concentration of positive intermediate ions was found to be higher than that at the reference point by a factor of ten. This difference was observed only at the smallest sizes; above 10 nm the difference was insignificant.

Domaines: Océan, Atmosphère

L. Laakso, A. Hirsikko, T. Grönholm, M. Kulmala, A. Luts, et al.. Waterfalls as sources of small charged aerosol particles. Atmospheric Chemistry and Physics, 2007, 7 (9), pp.2271-2275. ⟨hal-00296214⟩