The complexity of the day-side X-line during southward interplanetary magnetic field

High-resolution global magnetohydrodynamics (MHD) simulations include both meso- and global-scale processes occurring at the magnetopause, which interact to determine time-dependent orientation of day-side x-line (DXL). This study demonstrates that DXL in GAMERA MHD varies on a time scale minutes during steady southward interplanetary magnetic field conditions. behavior manifests observational data when reconnection outflows indicate direction is opposite prediction from steady-state model location. Because models do not capture dynamics are independent solar wind variations, particularly surface waves flux transfer events, they represent time-averaged state system.