Abstract
The relation between dry diameter (X0) and critical supersaturation (Sc) for atmospheric submicron aerosol particles is investigated using a long term air sampling program at Rolla, Missouri. The particles are passed through an electrostatic aerosol size classifier, and then through an isothermal haze chamber. Results are reported in terms of an apparent volume fraction of soluble material, εv defined such that for particles composed only of ammonium sulfate and water insoluble compounds, εv is the actual volume fraction of soluble material. The probability distribution of εv is found to be approximately Gaussian in the εv range 0.2 to 1.3. The mean εv is 0.5, for electrostatic aerosol classifier settings of 0.2, 0.3, and 0.4 μm diameter.
Recommended Citation
D. J. Alofs et al., "Measured Spectra of the Hygroscopic Fraction of Atmospheric Aerosol Particles," Journal of Applied Meteorology, vol. 28, no. 2, pp. 126 - 136, American Meteorological Society, Feb 1989.
The definitive version is available at https://doi.org/10.1175/1520-0450(1989)028<0126:MSOTHF>2.0.CO;2
Department(s)
Mechanical and Aerospace Engineering
Second Department
Physics
Third Department
Chemistry
Keywords and Phrases
Aerosol Particle; Hygroscopic Fraction; Spectra
International Standard Serial Number (ISSN)
0894-8763
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 1989 American Meteorological Society, All rights reserved.
Publication Date
01 Feb 1989