The authors thank Hannes Wydler and Edwin Hausammann for their contribution in building the chamber and their unconditional help. This work was supported by the Swiss National Foundation Project 200021–107663/1.
Andronache, C., , T. Gronholm, , L. Laakso, , V. Phillips, , and A. Venäläinen, 2006: Scavenging of ultrafine particles by rainfall at a boreal site: Observations and model estimations. Atmos. Chem. Phys., 6, 4739–4754.
Baron, P., , and K. Willeke, 2005: Aerosol Measurement: Principles, Techniques, and Applications. 2nd ed. Wiley-Interscience, 1131 pp.
Beard, K., 1974: Experimental and numerical collision efficiencies for submicron particles scavenged by small raindrops. J. Atmos. Sci., 31, 1595–1603.
Beard, K., , and H. Pruppacher, 1971: A wind tunnel investigation of collection kernels for small water drops in air. Quart. J. Roy. Meteor. Soc., 97, 242–248.
Chate, D., , and A. Kamra, 1997: Collection efficiencies of large water drops collecting aerosol particles of various densities. Atmos. Environ., 31, 1631–1635.
Croft, B., , U. Lohmann, , R. Martin, , P. Stier, , S. Wurzler, , J. Feichter, , R. Posselt, , and S. Ferrachat, 2009: Aerosol size-dependent below-cloud scavenging by rain and snow in the ECHAM5-HAM. Atmos. Chem. Phys., 9, 4653–4675.
Denman, K., and Coauthors, 2007: Couplings between changes in the climate system and biogeochemistry. Climate Change 2007: The Physical Science Basis, S. Solomon et al., Eds., Cambridge University Press, 541–584.
Feng, J., 2007: A 3-mode parameterization of below-cloud scavenging of aerosols for use in atmospheric dispersion models. Atmos. Environ., 41, 6808–6822.
Grover, S., , H. Pruppacher, , and A. Hamielec, 1977: A numerical determination of the efficiency with which spherical aerosol particles collide with spherical water drops due to inertial impaction and phoretic and electrical forces. J. Atmos. Sci., 34, 1655–1663.
Houk, R., , V. Fassel, , G. Flesch, , H. Svec, , A. Gray, , and C. Taylor, 1980: Inductively coupled argon plasma as an ion source for mass spectrometric determination of trace-elements. Anal. Chem., 52, 2283–2289.
Jiang, Y., , A. Umemura, , and C. Law, 1992: An experimental investigation on the collision behaviour of hydrocarbon droplets. J. Fluid Mech., 234, 171–190.
Kerker, M., , and V. Hampl, 1974: Scavenging of aerosol particles by a falling water drop and calculation of washout coefficients. J. Atmos. Sci., 31, 1368–1376.
Leong, K., , K. Beard, , and H. Ochs III, 1982: Laboratory measurements of particle capture by evaporating cloud drops. J. Atmos. Sci., 39, 1130–1140.
Leonhard, P., , R. Pepelnik, , A. Prange, , N. Yamada, , and T. Yamada, 2002: Analysis of diluted sea-water at the ng L−1 level using an ICP-MS with an octopole reaction cell. J. Anal. At. Spectrom., 17, 189–196.
Martin, G., , D. Johnson, , and A. Spice, 1994: The measurement and parameterization of effective radius of droplets in warm stratocumulus clouds. J. Atmos. Sci., 51, 1823–1842.
Park, S., , C. Jung, , K. Jung, , B. Lee, , and K. Lee, 2005: Wet scrubbing of polydisperse aerosols by freely falling droplets. J. Aerosol Sci., 36, 1444–1458.
Pranesha, T., , and A. Kamra, 1996: Scavenging of aerosol particles by large water drops. 1. Neutral case. J. Geophys. Res., 101 (D18), 23 373–23 380.
Schumann, T., 1989: Large discrepancies between theoretical and field determined scavenging coefficients. J. Aerosol Sci., 20, 1159–1162.
Slinn, W., , and S. Shen, 1970: Anisotropic Brownian diffusion and precipitation scavenging of submicron particles. J. Geophys. Res., 75, 2267–2270.
Slinn, W., , and J. Hales, 1971: A reevaluation of the role of thermophoresis as a mechanism of in- and below-cloud scavenging. J. Atmos. Sci., 28, 1465–1471.
Starr, J., , and B. Mason, 1966: The capture of airborne particles by water drops and simulated snow crystals. Quart. J. Roy. Meteor. Soc., 92, 490–499.
Tinsley, B., , R. Rohrbaugh, , and M. Hei, 2001: Electroscavenging in clouds with broad droplet size distributions and weak electrification. Atmos. Res., 59, 115–135.
Tinsley, B., , L. Zhou, , and A. Plemmons, 2006: Changes in scavenging of particles by droplets due to weak electrification in clouds. Atmos. Res., 79, 266–295.
Tripathi, S., , and R. Harrison, 2002: Enhancement of contact nucleation by scavenging of charged aerosol particles. Atmos. Res., 62, 57–70.
Ulmke, H., , M. Mietschke, , and K. Bauckhage, 2001: Piezoelectric single nozzle droplet generator for production of monodisperse droplets of variable diameter. Chem. Eng. Technol., 24, 69–70.
Vali, G., 1996: Ice nucleation—A review. Nucleation and Atmospheric Aerosols, M. Kulmala and P. E. Wagner, Eds., Elsevier, 271–279.
Vohl, O., , S. Mitra, , K. Diehl, , G. Huber, , S. Wurzler, , K. Kratz, , and H. Pruppacher, 2001: A wind tunnel study of turbulence effects on the scavenging of aerosol particles by water drops. J. Atmos. Sci., 58, 3064–3072.
Wang, P., , and H. Pruppacher, 1977: An experimental determination of the efficiency with which aerosol particles are collected by water drops in subsaturated air. J. Atmos. Sci., 34, 1664–1669.
Wang, P., , S. Grover, , and H. Pruppacher, 1978: On the effect of electric charges on the scavenging of aerosol particles by clouds and small raindrops. J. Atmos. Sci., 35, 1735–1743.
Wang, X., , L. Zhang, , and M. Moran, 2010: Uncertainty assessment of current size-resolved parameterizations for below-cloud particle scavenging by rain. Atmos. Chem. Phys., 10, 5685–5705.