Geofisica pura e applicata

, Volume 31, Issue 1, pp 169–181 | Cite as

Some airborne observations of condensation nucleus concentration

  • G. J. Day


The measurement of condensation nucleus concentration from an aircraft is considered and preliminary observations made with a photo-electric condensation nucleus counter discussed. It is concluded that at heights up to 6000 ft concentrations of condensation nuclei vary, from 200 cm−3 in clean maritime air to 5 × 103 cm−3 generally over large industrial areas and 35 × 103 cm−3 downwind of specific industrial sources. It appears that sea spray makes a contribution to the nucleus population.


Industrial Area Preliminary Observation Condensation Nucleus Industrial Source Nucleus Counter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. (1).
    Pollak L. W. & Murphy T., Archiv für Meteorologie, Geophysik und Bioklimatologie, Serie A, p. 101 (1953).Google Scholar
  2. (2).
    Dessens H., La Meteor, pp. 321–327, 328–340 (1947).Google Scholar
  3. (3).
    Wigand A., Ann. der Physik., 59, 689–742 (1919).Google Scholar
  4. (4).
    Pollak L. W., Geofisica pura e applicata, Vol. 22 (1952).Google Scholar
  5. (5).
    Junge C., Compendium of Meteorology, p. 186 (1951).Google Scholar
  6. (6).
    Simpson, Quart. Journ. R. Met. Soc., 67 99 (1941).Google Scholar

Copyright information

© Istituto Geofisico Italiano 1955

Authors and Affiliations

  • G. J. Day

There are no affiliations available

Personalised recommendations