On the removal time of aerosol particles from the atmosphere by precipitation scavenging

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RODHE, HENNING ; GRANDELL, JAN (2011)

A statistical investigation is presented on the distribution of dry and precipitation periods at a Swedish station. It is shown that the expected length of time from an arbitrary moment to the onset of the next precipitation period is about 90 and 35 hours for summer and winter conditions respectively. Based on the results of these investigations we have derived expressions for the expected length of life of an aerosol particle in the lower layers of the troposphere. Estimates of effective precipitation scavenging coefficients give expected lengths of life of the order 100–300 hours in summer and 35–80 hours in winter. The connection between the distribution of the length of life of particles in the atmosphere and the distribution of particles on the ground away from a source, is discussed and the importance of studying such age distributions is emphasized.DOI: 10.1111/j.2153-3490.1972.tb01571.x
  • References (21)
    21 references, page 1 of 3

    Chamberlain, A. C. 1963. Aspects of travel and deposition of aerosol and vapour clouds. British Report A ER E-HPI R-1261.

    Engelman, R. J. 1968. The calculation of precipitation scavenging. In Meteorology and atomic energy (ed. D. M. Slade). USAEC.

    Eriksson, E. 1966. Air borne salts and the chemical composition of river waters. Tellw 7, 243-260.

    Eriksson, E. 1971. Compartment models and reservoir theory. Ann& Rev. of Ecology and Syutelnatia 2, 67-83.

    Gaver, D. P. 1963. Random hazard in reliability problems. Technometria 5, 211-226.

    Georgii, H.-W. 1970. Contribution t o the atmospheric sulfur budget. J. Qmphya. Rea. 75,2366-2371.

    Greenfield, S. M. 1967. Rain scavenging of radioactive particulate matter from the atmosphere. J . Met. 14, 114-126.

    Hales, J. M., Thorp, J. M. & Wolf, A. M. 1970. Washout of SO, from the plume of a coalfired power plant. Precipitation scavenging (1970), Proc. Richland, Washington. A E C Symp., Ser. No. 22.

    Junge, C. E. 1963. Air chemiatry and radioactivity. Academic Press, New York.

    Junge, C. E. & Gustafson, P. E. 1967. On the distribution of sea salt over the United States and its removal by precipitation. Tellua 9, 164-173.

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