Led by researchers from CIRES and NOAA’s Chemical Sciences Division, the Utah Winter Fine Particulate Study (UWFPS) will use scientific instruments aboard a NOAA Twin Otter aircraft to investigate chemistry that impacts wintertime air quality in and around Salt Lake City. Research flights are scheduled to start January 2017, with additional ground-based measurements at the University of Utah and neighboring Utah and Cache Valleys made possible through collaboration with investigators from the Utah Department of Air Quality, U.S. EPA, and several other research institutions.