Method for Detection of Forbush Effects in Cosmic Ray Flux According to Neutron Monitors Data Using Wavelet Transform

The method developed by the authors for detection of Forbush effects in cosmic ray variations based on ground data of neutron monitors is presented. The method is based on the synthesis of the classical theory of risks with nonlinear approximating schemes in wavelet bases. The basis of the method are the rules composed by the authors. Numerical realization of the developed rules makes it possible to obtain a solution close to optimal without pre-training in near real-time mode. On the example of periods of extreme magnetic storms in 2024, method results confirming its efficiency are illustrated. General anomalous dynamics of the cosmic ray flux is distinguished. Anomalous changes, preceding the beginnings of the events under analysis, were discovered. The observed correlation with the changes of interplanetary environment parameters indicates the reliability of the obrained results.