Time variation of the size-distribution of stored condensation nuclei

Meteorology and Atmospheric Physics - Tập 14 - Trang 37-54 - 1963
G. McGreevy1
1St. Patrick's College, Maynooth, Ireland

Tóm tắt

Stored aerosols belonging to the Aitken nucleus size range are investigated both experimentally and theoretically. Using the exhaustion method of diffusion, it is found that they tend to be composed of particles of different size ranges. The processes of sedimentation, diffusion and coagulation of aerosols in closed containers are discussed in the light of the results. It is considered that turbulence affects the results obtained.

Tài liệu tham khảo

Nolan, J. J., andV. H. Guerrini: The Diffusion Coefficients and Velocities of Fall in Air of Atmospheric Condensation Nuclei. Proc. Roy. Irish Acad.43 A, 5–24 (1935). Nolan, J. J., andP. J. Nolan: Diffusion and Fall of Atmospheric Condensation Nuclei. Ibid.45 A, 47–63 (1938). Nolan, P. J., andE. Kuffel: Coagulation and Diffusion of Enclosed Nuclei. Geofis. pura appl.44, 97–106 (1955). O'Connor, T. C.: Some Characteristics of Condensation Nuclei Stored in a Large Vessel. Ibid.31, 107–114 (1955). Pollak, L. W., T. C. O'Connor, A. L. Metnieks andR. Furth: On the Determination of the Diffusion Coefficient of Condensation Nuclei Using the Static and Dynamic Methods. Ibid.34, 177–195 (1956). Pollak, L. W., andA. L. Metnieks: On the Determination of the Diffusion Coefficient of Heterogeneous Aerosols by the Dynamic Method. Ibid.37, 183–190 (1957). Metnieks, A. L., andL. W. Pollak: Instruction for Use of Photo-Electric Condensation Nucleus Counters. Geophys. Bull. No. 16, School of Cosmic Physics, Dublin, 1959. Metnieks, A. L., andL. W. Pollak: On the Particle Size Analysis of Polydisperse Aerosols Using a Diffusion Battery and the Exhaustion Method. Geophys. Bull. No. 21, School of Cosmic Physics, Dublin, 1962. Pollak, L. W., andA. L. Metnieks: The Influence of Air-flow on the Determination of the Diffusion Coefficient of Heterogeneous Aerosols by the Dynamic Method. Geofis. pura appl.44, 224–232 (1959). O'Connor, T. C., andV. P. V. Flanagan: The Measurement of Size Distributions in Aitken Nuclei. Ibid.50, 60–66 (1961). Nolan, P. J.: The Influence of Condensation Nuclei and Dust Particles on Atmospheric Ionisation. Proc. Roy. Irish Acad.41 A, 7, 61–69 (1933). Nolan, P. J.: Experiments on Condensation Nuclei. Ibid.47A, 25–38 (1941). Pollak, L. W., andT. C. O'Connor: The Uncertainties in Measurements of Concentrations of Condensation Nuclei with Photo-electric Counters and the Decay of Nuclei in Large Vessels. Assoc. de Météorol. U.G.G.I. Rome, Sept. 1954. Pollak, L. W., andT. C. O'Connor: Decay of Aerosols in Small and Very Small Vessels and a Static Method for Determining the Size of Condensation Nuclei. Geofis. pura appl.31, 66–79 (1955). Nolan, P. J., andL. W. Pollak: The Calibration of a Photo-electric Nucleus Counter. Proc. Roy. Irish Acad.51 A, 9–31 (1946). Nolan, P. J., andE. L. Kennan: Condensation Nuclei from Hot Platinum etc. Ibid.52 A, 171–190 (1949). Whytlaw-Gray, R., andH. S. Patterson: Smoke. London, 1932. Harper, W. R.: An Exact Theory of the Coagulation of Spherical Particles Arising from Thermal Agitation. Disperse Systems in Gases, Dust, Smoke and Fog. Trans. Faraday Soc., 1936. Tunitskii, N. N.: J. phys. Chem. U.S.S.R.20, 1137 (1946). Teverovsky, N.: Izv. Akad. Nauk, U.S.S.R., Ser. Geogr. Geofis. 12, 7 (1948).