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Ann. Geophys., 22, 2273-2276, 2004
www.ann-geophys.net/22/2273/2004/
© European Geosciences Union 2004
Estimation of past solar and upper atmosphere conditions from historical and modern auroral observations
W. Schröder1, N. N. Shefov2, and H.-J. Treder3
1Geophysical Station, Bremen, Germany
2Obukhov Institute of Atmospheric Physics, Moscow, Russia
3Commission for the History of Geophysics and Cosmical Physics, Potsdam, Germany
Abstract. On the basis of the analysis of the data of auroral observations at middle
latitudes during low solar activity, and modern spectrophotometric research, the
feasibility of their joint use for the estimation of the level of the solar activity during periods
without instrumental measurements is discussed. In this paper an attempt is undertaken to
determine quantitative information on solar activity by comparing the data of visual
auroral observations with the modern parameter of their luminescence.
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