Changes in aerosol size‐ and phase distributions due to physical and chemical processes in fog

ABSTRACT Measurements of the scavenging efficiency of aerosol particles in fog are presented. The scavenging efficiency as a function of size for accumulation‐mode particles is presented, along with efficiencies for the total number, accumulation‐mode number, and accumulation‐mode volume. Particles...

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Bibliographic Details
Published in:Tellus. Series B, Chemical and physical meteorology Chemical and physical meteorology, 1992-11, Vol.44 (5), p.489-504
Main Authors: NOONE, KEVIN J., OGREN, JOHN A., HALLBERG, ANNELI, HEINTZENBERG, JOST, STRÖM, JOHAN, HANSSON, HANS‐CHRISTEN, SVENNINGSSON, BIRGITTA, WIEDENSOHLER, ALFRED, FUZZI, SANDRO, FACCHINI, MARIA CHRISTINA, ARENDS, BEATE G., BERNER, AXEL
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Meteorology
Particles and aerosols
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Summary:ABSTRACT Measurements of the scavenging efficiency of aerosol particles in fog are presented. The scavenging efficiency as a function of size for accumulation‐mode particles is presented, along with efficiencies for the total number, accumulation‐mode number, and accumulation‐mode volume. Particles below ca. 0.3 µm diameter were not efficiently scavenged in the fogs. The scavenging efficiency for accumulation‐mode particles showed two steps, indicating that the hygroscopic/hydrophobic nature of the aerosol appeared to have been a controlling factor in determining scavenging efficiencies. Observed changes in the aerosol size distributions are discussed in reference to the processes (i.e., in‐cloud scavenging, aqueous‐phase reactions) potentially influencing them.
ISSN:0280-6509
1600-0889
DOI:10.1034/j.1600-0889.1992.t01-4-00004.x