Influence of Cosmic Ray Invasions and Aerosol Plasma on Powerful Atmospheric Vortices
N. I. Izhovkina
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the RAS, Troitsk, Russia.
S. N. Artekha *
Space Research Institute of the RAS, Moscow, Russia.
N. S. Erokhin
Space Research Institute of the RAS, Moscow, Russia and Peoples' Friendship University of Russia, Moscow, Russia.
L. A. Mikhailovskaya
Space Research Institute of the RAS, Moscow, Russia.
*Author to whom correspondence should be addressed.
Abstract
The Earth’s atmosphere is affected by various ionizing sources. The maximum ionization of atmospheric particles by cosmic rays corresponds to the altitude of formation of tropospheric clouds. In the high-latitude troposphere for the region of the geomagnetic polar cap, in the winter period, the excitation of local cyclonic structures are observed which are accompanied with ice storms, with invasions into middle and subtropical latitudes. The time of excitation of such cyclones is about a day that is comparable with the time of excitation of tornadoes, which are generated at low latitudes. Localization of polar cyclones is not accidental. The region of the polar cap is connected with geomagnetic field lines extended into the tail of the Earth’s magnetosphere. This area is open for the penetration of cosmic rays. The ionization of aerosols in the stratosphere and the upper troposphere by precipitating particles of cosmic rays enhances the vortex activity of the atmosphere. The important role of the aerosol impurity is manifested in the generation of plasma vortices and in the accumulation of energy and mass in the atmosphere by vortices during condensation of moisture. Due to the cascade character of the ionization process, the influence of cosmic radiation turns out to be non-linear and increases with increasing pollution of the atmosphere. Aperiodic electrostatic perturbations, which play a remarkable role in the genesis of vortices, are stochastically excited in plasma inhomogeneities. During the interaction of plasma vortices and Rossby vortices, a large-scale vortex structure is formed and grows.
Keywords: Aerosol plasma, geomagnetic field, cosmic rays, atmospheric vortex activity, polar winter cyclones, aperiodic disturbances.