SOME STATISTICAL ASPECTS OF LONG‐TERM FLUCTUATIONS IN SOLAR AND ATMOSPHERIC PHENOMENA

This paper is a progress report, presenting the preliminary results of an investigation of a number of meteorological time series dating as far back as 1750. These series are critically examined for any evidence of influence by the well-known solar cycle of about 11 yr. by the technique of power spectrum analysis. In addition the data are treated by means of specially designed band-pass filters to recover phase information and to study possible nonlinear effects.