AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
Abstract View
Recent Developments and Improvements to a Continuous Flow Diffusion Chamber for Measuring Ice Nucleating Particles
GAVIN MCMEEKING, Ezra Levin, Tim Gordon, Kai Bi, Russell Perkins, Ping Chen, Paul DeMott, Handix Scientific
Abstract Number: 476 Working Group: Instrumentation and Methods
Abstract We present a summary of several threads of development focusing on improvement and characterizing the performance of a continuous flow diffusion chamber for measuring ice nucleating particles (INP). Development efforts include work done to improve the refrigeration performance of the instrument, eliminate the need to chemically re-treat the internal surfaces of the instrument, automate all aspects of instrument operation, and reduce measurement artifacts. We include laboratory and field test data for both ambient and previously characterized ice nucleating particle samples, as well as comparisons to existing INP measurement methods. We also discuss in-progress development work focused on producing and testing an improved airborne version of the instrument.