Lynn M Russell¹, Abigail Williams², Veronica Z. Berta³, Christian Pelayo⁴, Jeramy Dedrick⁵, Sanghee Han⁶, Elavarasi Ravichandran⁷, Markus D Petters⁸, Lauren Robinson⁹, Rachel Ying-Wen Chang¹⁰, Israel Silber¹¹, Dan Lubin¹, Mark A Miller¹², Jeremy J B Wentzell¹³, Michael J Wheeler¹³, John Liggio¹³ and EPCAPE Science Team, (1)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (2)University of California Davis, Davis, United States, (3)University of California San Diego, La Jolla, United States, (4)Scripps Institution of Oceanography, La Jolla, United States, (5)Texas A&M University, College Station, United States, (6)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (7)University of California Riverside, Riverside, United States, (8)University of California Riverside, Center for Environmental Research and Technology, Riverside, United States, (9)Dalhousie University, Department of Physics and Atmospheric Science, Halifax, NS, Canada, (10)Harvard University, Cambridge, MA, United States, (11)Pacific Northwest National Laboratory, Richland, United States, (12)Rutgers University, New Brunswick, NJ, United States, (13)Environment and Climate Change Canada, Air Quality Research Division, Toronto, ON, Canada