Evaluating Proton Intensities for the SMILE Mission

This study presents the development of five linear regression models to predict proton intensities within the energy range of 92.2 to 159.7 keV for different regions in the magnetosphere. These models are based on 14 years of data from the Cluster RAPID experiment and NASA’s OMNI database. Designed to support the operations of the Solar wind-Magnetosphere-Ionosphere Link Explorer (SMILE), the models are user-friendly and offer broad applicability for satellite mission planning and risk assessment. Analysis across four spatial regions showed that proton intensities in outer regions (YGSE > 6,R_e) depend mainly on radial distance and solar wind speed, while in inner regions (YGSE < 6, R_e), they are well correlated with the Z-coordinate and magnetic field topology. Spearman correlations of 0.57 to 0.72 demonstrate good predictive performance, emphasizing the potential of region-specific approaches in space weather prediction.