ErikaÌýSchreiberPh.D. ÂÌñ»»ÆÞ, 2025ClimatologyCryospherePHYSICAL GEOGRAPHYÌýerika.schreiber@colorado.eduFaculty Advisor:ÌýMark SerrezePh.D. Dissertation Title: Impacts of Synoptic-Scale Cyclones on Arctic Sea Ice Concentration: Seasonal and Regional Variations and Trends