Properties of Forbush Decreases observed with the AMS-02 daily proton flux*

A Forbush decrease (FD) is a sudden reduction of Galactic Cosmic Rays (GCRs), due to disturbances in the interplanetary magnetic field, usually caused by intense transient solar activities such as Interplanetary Coronal Mass Ejections (ICMEs) and Corotating Interaction Regions (CIRs). With the high-precision daily proton data measured by the Alpha Magnetic Spectrometer (AMS-02) on the International Space Station from May, 2011 to October, 2019, we identified more than one hundred FD events, with an automatic method. The properties of a selected set of ICME-caused and CIR-caused FD events were analyzed, using proton data with fine rigidity bins from 1 GV to 100 GV. The rigidity dependence of fluxes during FDs will be presented, separately for ICME and CIR FDs. The correlation between FD properties such as magnitude and maximum affected rigidity and synchronous solar wind parameters will also be presented, separately for ICME and CIR FDs.