Evolutions of Stream Interaction Region in the Inner Heliosphere and Coronal Hole Morphologies

Stream interaction regions (SIRs) are formed when the fast solar wind streams with their origin in coronal holes (CHs) interact with the surrounding slow solar wind in the Heliosphere. Previous studies have analyzed different types of CHs and the resulting characteristics of SIRs at 1 AU (e.g., Heinemann et al., 2018, Samara et al., 2022). For the inner heliosphere, however, research on the relation between CH morphology and HSS/SIR characteristics is scarce. We extract CH morphologies from SDO/AIA and use solar wind parameters from multiple spaceraft, including Parker Solar Probe, Solar Orbiter, STEREO-A, ACE and WIND. Combining in-situ measurements and remote sensing image data, we show the evolution and statistics of solar wind profiles in HSSs/SIRs in the inner Heliosphere for multiple cases from Solar Cycle 24 and 25.