Global variations in the heliosphere, and their geophysical manifestations

Abstract

This paper addresses the evolutionary patterns of global events on the Sun and in the heliosphere as well as their relation to large-scale disturbances of the Earth's magnetosphere and atmosphere. Large-scale and global events on the Sun and times at which the solar periodicity regimes change have not yet received an adequate physical explanation. Using data on the most recent cycles of solar activity it has been established that large-scale changes in background fields are often accompained by coronal mass ejections and intrinsic variations in galactic cosmic rays, and correlate with dynamical features of large-scale structures of background magnetic field of the Sun. Based on comprehensive helio-geophysical data an analysis is made of the global events on the Sun and in the heliosphere, and they are compared with solar and geomagnetic activity variations, dynamical features of background structures of magnetic field, and with cosmic ray intensity variations. A first approximation is used to construct a phenomenological scenario of development of global events on the Sun and in the heliosphere, their relation to the dynamics of large-scale structures of background field, significant enhancements of solar and geomagnetic activity.