PNNL

Abstract

This report describes the accomplishments, progress, and obstacles encountered during the first project year of the U.S. Department of Energy Biological and Environmental Research program Early Career project, “Disentangling the factors controlling the emission of bioparticles that act as ice nucleating particles.” The project has three main thrusts: • Thrust 1: Laboratory Measurements of Bioparticle Standards. • Thrust 2: Collect and Analyze Measurements at ARM Sites. • Thrust 3: Investigate Relationships Between Environmental Factors and Bioparticle and Bio-INP Emissions. The structure of this project is very linear, with the success of each aim dependent upon the success of the previous aim. For example, the successes of Thrusts 2 and 3 require a machine learning (ML) classifier to type particles measured by a Wideband Integrated Bioaerosol Sensor (WIBS). Therefore, the focus of the first year has been developing this ML classifier (Thrust 1) while performing some preliminary work on the other two thrusts. Here, I discuss the accomplishments thus far under each project thrust.