Persistence of Solar Wind Characteristics through Radial and Temporal Evolution

Solar wind transients such as corotating interaction regions can cause geomagnetic storms. Understanding solar wind conditions throughout the inner heliosphere is crucial for forecasting space weather conditions at Earth and other planets. Recent missions, including Parker Solar Probe (PSP) and Solar Orbiter offer new possibilities for probing the evolution of solar wind properties due to their orbits at various solar distances. We investigate how persistent the solar wind plasma flow is over distance by correlating solar wind parameters measured by spacecraft located at different positions in the heliosphere (0.1AU – 1.5AU). For that, we introduce a new two-dimensional persistence model of the solar wind based on in-situ measurements. Assuming persistence, the measured in-situ parameters from inner spacecraft are being propagated outwards applying the process of inelastic collisions between the plasma parcels. The resulting time-dependent 3D map of solar wind parameters is compared to in-situ data from spacecraft located further away and at different longitudinal positions from the Sun. We present statistics on the comparison between modeled and measured in-situ solar wind plasma parameters across radial distances and temporal evolutions.