Coupling an online ion conductivity measurement with the particle-into-liquid sampler: Evaluation and modeling using laboratory and field aerosol data
Ewan Crosbie, Michael A. Shook, Luke D. Ziemba, B. E. Anderson, Rachel A. Braun, Matthew D. Brown, Carolyn E. Jordan, Alexander B. MacDonald, Richard H. Moore, J. B. Nowak, Claire Robinson, Taylor Shingler, Armin Sorooshian, Connor Stahl, K. L. Thornhill, Elizabeth B. Wiggins, Edward L. Winstead
Abstract
Ex) during nineteen research flights. A diverse range of ambient aerosol was sampled from biomass burning, fresh and aged urban pollution, and marine sources. Ambient aerosol did not exhibit the same degree of closure as the laboratory aerosol, with measured ions only accountable for 43% of the conductivity. The remaining fraction of the conductivity was examined in combination with ion charge balance and found to provide additional supporting information for diagnosing and modeling particle acidity. An urban plume case study was used to demonstrate the utility of the measurement for supplementing compositional data and augmenting the temporal capability of the PILS.