Penn State recognized 42 graduate students with annual University awards that celebrate students' impact in research, scholarship, teaching, outreach, mentoring and more. Meteorology and atmospheric science doctoral student Helen Kenion, won an Alumni Dissertation Award. Helen's dissertation presents and applies a novel method for measuring urban greenhouse gas emissions at the neighborhood scale. Her research addresses a critical gap due to the fact that urban areas are responsible for over half of human-caused greenhouse gas emissions, but direct emissions measurements in cities are rare. Policymakers rely on human activity-based emissions estimates, or emissions inventories, which often contain systematic errors and take years to complete. Atmospheric emissions estimates are essential to evaluate and improve inventories.