Role of Variations in Galactic Cosmic Rays in Tropical Cyclogenesis: Evidence of Hurricane Katrina

摘要

Based on the analysis of experimental data on vertical temperature profiles in the propagation region of Hurricane Katrina and variations in fluxes of galactic cosmic rays (hereafter, cosmic rays), we established an interrelation between temperature variations at the tropopause level and variations in the level of atmosphere ionization by cosmic rays. We found that variations in temperature and its spatial gradient related to the Forbush depression of cosmic ray flux induced by a magnetic storm could lead to variation in the direction of the meridional component of velocity and the intensification of Hurricane Katrina.