Enhancement of stratospheric aerosols after solar proton event

Details Enhancement of stratospheric aerosols after solar proton event Enhancement of stratospheric aerosols after solar proton event

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996angeo..14.1119s&link_type=abstract

Annales Geophysicae, vol. 14, Issue 11, pp.1119-1123

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Scientific paper

The lidar measurements at Verhnetulomski observatory (68.6°N, 31.8°E) at Kola peninsula detected a considerable increase of stratospheric aerosol concentration after the solar proton event of GLE (ground level event) type on the 16/02/84. This increase was located at precisely the same altitude range where the energetic solar protons lost their energy in the atmosphere. The aerosol layer formed precipitated quickly (1-2 km per day) during 18, 19, and 20 February 1984, and the increase of R(H) (backscattering ratio) at 17 km altitude reached 40% on 20/02/84. We present the model calculation of CN (condensation nuclei) altitude distribution on the basis of an ion-nucleation mechanism, taking into account the experimental energy distribution of incident solar protons. The meteorological situation during the event was also investigated.

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