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pure and applied geophysics

, Volume 120, Issue 1, pp 11–17 | Cite as

The effect of the Mt St Helens eruption on tropospheric and stratospheric ions

  • Y. Kondo
  • R. Reiter
  • H. Jäger
  • M. Takagi
Article

Abstract

Balloon-borne observations of electrical conductivity in the troposphere and stratosphere were performed using conductivity sondes at Garmisch-Partenkirchen, West Germany, from June to November, 1980, after the Mt St Helens eruption. A significant decrease of atmospheric ions in the altitudes from the troposphere to lower stratosphere has been detected until several months after the eruption in comparison with the observational results obtained before the eruption. Simulteneous ruby lidar observation a month after the eruption indicates an increased amount of aerosol at nearly the same altitude as that of conductivity decrease. Several months after the eruption it appears that aerosols detected by lidar and those effective in reducing ion concentration have different profiles.

Key words

Tropospheric and stratospheric ions Volcanoes — effects on ion concentration 

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References

  1. Kondo, Y., Reiter, R. Jäger, H., andTakagi, M. (1981).Stratospheric Aerosol Inferred from Electrical Conductivity during Volcanically Quiescent Period. Submitted for publication.Google Scholar
  2. Reiter, R., Jäger, H., Carnuth, W., andFunk, W. (1980).Lidar Observations of the Mount St. Helens Eruption Cloud over Mid-Europe, May to July 1980, Geophys. Res. Letter7, 1099–1101.Google Scholar

Copyright information

© Birkhäuser Verlag 1982

Authors and Affiliations

  • Y. Kondo
    • 1
  • R. Reiter
    • 2
  • H. Jäger
    • 2
  • M. Takagi
    • 1
  1. 1.Research Institute of AtmosphericsNagoya UniversityToyokawa AichiJapan
  2. 2.Fraunhofer Institute for Atmospheric Environmental ResearchGarmisch-PartenkirchenWest Germany

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