Relations between Natural Phenomena and Solar Activity in the Oceanographic and Forest Fields

A great number of studies on the relationship between solar activity and various terrestrial phenomena, both in the climatic and geophysical fields, have been carried out over several decades. In the present work we analyse the shorter oscillations of the solar activity such as the ones recognized in the climatic and oceanographic oscillations, for which, as it is known, longer series of observations are unavailable. Specially we analyse both the sunspot series (Wolf relative number series) considered an index of solar activity and observed since 1700 and the series of the mean sea level variation of the longest ones available in the word and relative to three oceanographic stations in Poland (Swinoujscie), France (Brest) and Italy (Venezia), whose geographical distribution made the comparison interesting. Because of the sea level evolution fluctuate in intensity, an analysis of these fluctuations and their possible correlation with the solar activity was considered of great interest to give a contribution for the explanation of the various interactions between natural phenomena and other problems relating to the forecasting of the climatic evolution.