The results of an experimental research of the influence of winter stratospheric warming on the intensity of the muon component of secondary cosmic rays are presented. The paper compares the results of radiosonde and lidar measurements of the atmospheric temperature over Yakutsk and registration data of the underground complex of muon telescopes of the A.I. Kuzmin Yakutsk Cosmic Ray Spectrograph. The winter period of 2009-2011 is being considered. Because this period is due to a minimum of solar activity and, accordingly, the contribution of the Forbush effects to variations in the intensity of cosmic ray muons was minimal. The existence of a direct relationship between the muon counting intensity and the temperature of the winter atmosphere during sudden warming is shown. It was found that the largest contribution to the formation of muons is made by temperature variations at the tropopause level. This work was financially supported by the Ministry of Education and Science of the Russian Federation on budget topic II.16.1.7. 0375-2018-0004 and RFBR grant No. 18-45-140034.
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