Atmospheric Chemistry Program Seminar: Maxim Muter, ANYL 3rd year

Ultrafine Particles in Rural and Urban Environments: Potential Climate Impacts, Long-Term Characterization, and Prediction Maxim Muter, ANYL 3rd year talk, Browne group Ultrafine particles (UFPs, diameter < 100 nm) dominate aerosol number concentrations, yet their sources and transformations remain incompletely understood. In this talk I will examine two different aspects of UFP chemistry and physics with important implications for climate and urban air quality. First, I investigate how new particle formation (NPF) enhances potential cloud droplet number (CDN) at a rural, agricultural site. Globally, NPF is estimated to produce approximately 50% of cloud condensation nuclei (CCN) and thus plays a key role in modulating cloud properties and precipitation. Understanding of NPF and subsequent growth to CCN sizes remains incomplete, and as a result, predictions of CCN and CDN enhancement from NPF are uncertain. Observationally constraining CCN and potential CDN enhancements associated with...