10th International Aerosol Conference
September 2 - September 7, 2018
America's Center Convention Complex
St. Louis, Missouri, USA

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New Particle Formation Impacting Cloud Condensation Nuclei Concentration

ANNA GANNET HALLAR, Lauren Zuromski, Ian McCubbin, Douglas Lowenthal, University of Utah

Abstract Number: 1616
Working Group: Clouds and Climate

Abstract
There are several potential underlying principles that allow aerosol nucleation to occur more frequently at high elevation sites. Previous work has shown that frequent New Particle Formation (NPF) occurs regularly (52% of days) at a remote high elevation (3210 m a.s.l.) site in Colorado, Storm Peak Laboratory (e.g., Hallar et al., 2011; Hallar et al., 2016). This new work will present a long-term climatology (2001 – 2017) of aerosol size distributions and clearly shows a seasonal dependence on new particle formation at Storm Peak Laboratory. Furthermore, using this extensive data record, an aim of this study is to demonstrate a statistically significant connection between NPF events and growth to Cloud Condensation Nuclei (CCN). Ambient CCN data Storm Peak Laboratory has been collected for the last decade. These new results suggest that NPF in this remote region are directly impacting the number of available CCN at a supersaturation relevant to orographic cloud formation.