aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 90 Magnetism and Activity of the Sun - 2024 Conference Proceedings Analysis of data on cosmic ray variations during periods of interplanetary disturbances and geomagnetic storms Mandrikova Oksana Mandrikova Bogdana Stepanenko Aleksandr Institute of Cosmophysical Research and Radio Wave Propagation, Far Eastern Branch of the Russian Academy of Sciences Institute of Cosmophysical Research and Radio Wave Propagation, Far Eastern Branch of the Russian Academy of Sciences Institute of Cosmophysical Research and Radio Wave Propagation, Far Eastern Branch of the Russian Academy of Sciences";} 22 03 2025 6 1 35 39 29 09 2024 Copyright (c) 2026 Mandrikova O., Mandrikova B., Stepanenko A. 2026 Oksana Mandrikova, Bogdana Mandrikova, Aleksandr Stepanenko The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Acta Astrophysica Taurica is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

The paper presents the results of the method developed by the authors for analyzing data on cosmic ray variations during interplanetary disturbances and geomagnetic storms. The method was tested on the data from neutron monitors at high-latitude and polar stations. Numerical implementation of the method allows obtaining the result of the cosmic ray flux state assessment as the neutron monitor data enter the processing system. The efficiency of the method was confirmed based on statistical modeling performed using both natural and model data. The results showed that at the rate of data recording in the processing system (Δ t = 1 sec), application of the developed method allows us to detect anomalous changes, which precede and accompany magnetospheric disturbances of varying intensity, in the cosmic ray flux.

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