Main Time Characteristics of Cosmic Ray Variations and Related Parameters in Magnetic Clouds

The behavior of the main parameters of the interplanetary medium, cosmic ray variations, and geomagnetic activity as magnetic clouds pass the Earth (466 events from 1967 to 2021) was studied. Time distributions of these parameters during magnetic clouds passage are considered. It is shown that the maximum values of the solar wind velocity, interplanetary magnetic field strength, and geomagnetic activity indices are more often recorded in the front part of the magnetic cloud, while the minimum values of the temperature index, density, and equatorial component of cosmic ray anisotropy can be observed in any part of the studied structure.