Energetic particle flux measurements from the Korean space weather monitor particle detector: a comparative study with the MPS-HI onboard GOES-16

Abstract

The Korean space weather monitor (KSEM) aboard the GEO-KOMPSAT-2A (GK2A) has been continuously measuring energetic particle flux in geostationary orbit at 128.2°E longitude since July 2019. The particle detector (PD) component of KSEM comprises six particle telescopes viewing different directions that provide near-real-time electron flux observations within the energy range of 100 keV to 3.8 MeV. The KSEM PD on the GK2A satellite, together with the MPS-HI on the GOES-16 satellite 156.6° away, can provide valuable simultaneous observations of the asymmetric space environment and contributes to our understanding of this dynamic region. In this study, we present recent energetic electron flux measurements obtained from the KSEM PD and conduct preliminary cross-comparisons with data from the Magnetosphere Particle Sensor–High (MPS-HI) PD, which is part of the SEISS instrument suite onboard GOES-16. The inter-comparisons show that the electron fluxes of the two detectors are in reasonable similarity except for some energy bands under quiet conditions. Additionally, we provide a brief overview of the electron flux responses of both KSEM PD and MPS-HI under enhanced space environment conditions, which shows differences based on sensor characteristics and satellite location. Graphical Abstract: (Figure presented.)