Investigation of the relation between space-weather parameters and Forbush decreases automatically selected from Moscow and Apatity cosmic ray stations during solar cycle 23

We present the results of an investigation relation between space-weather parameters and cosmic ray (CR) intensity modulation using algorithm-selected Forbush decreases (FDs) from Moscow (MOSC) Apatity (APTY) neutron monitor (NM) stations during solar cycle 23. Our FD location program detected 408 383 FDs MOSC APTY NM respectively. A coincident computer code employed in this work, 229 that were observed at same universal Time (UT) two stations. Out simultaneous FDs, we formed a subset 139 large FDs(\%) $\leq-4$ station. peformed dimensional regression analysis magnitudes data on samples. find there significant disturbances time CR flux depressions. The correlation galactic (GCR) are statistically significant. implications depressions highlighted.