Articles | Volume 20, issue 13
https://doi.org/10.5194/acp-20-8201-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-20-8201-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Jul 2020
Research article |
| 16 Jul 2020
| 16 Jul 2020
Predicting secondary organic aerosol phase state and viscosity and its effect on multiphase chemistry in a regional-scale air quality model
Ryan Schmedding
Department of Environmental Science and Engineering, The University of North
Carolina at Chapel Hill, Chapel Hill, NC 27516, USA
present address: Department of Atmospheric and Oceanic Science, McGill
University, Montreal, H3A 2K6, Canada
Quazi Z. Rasool
Department of Environmental Science and Engineering, The University of North
Carolina at Chapel Hill, Chapel Hill, NC 27516, USA
present address: Pacific Northwest National Laboratory, Richland, WA 99354, USA
Yue Zhang
Department of Environmental Science and Engineering, The University of North
Carolina at Chapel Hill, Chapel Hill, NC 27516, USA
Aerodyne Research, Inc., Billerica, MA 01821, USA
Havala O. T. Pye
Department of Environmental Science and Engineering, The University of North
Carolina at Chapel Hill, Chapel Hill, NC 27516, USA
Office of Research and Development, Environmental Protection Agency,
Research Triangle Park, Durham, NC 27709, USA
Haofei Zhang
Department of Chemistry, University of California at Riverside, Riverside,
CA 92521, USA
Yuzhi Chen
Department of Environmental Science and Engineering, The University of North
Carolina at Chapel Hill, Chapel Hill, NC 27516, USA
Jason D. Surratt
Department of Environmental Science and Engineering, The University of North
Carolina at Chapel Hill, Chapel Hill, NC 27516, USA
Felipe D. Lopez-Hilfiker
Department of Atmospheric Sciences, University of Washington, Seattle, WA
98195, USA
present address: Tofwerk AG, 3600 Thun, Switzerland
Joel A. Thornton
Department of Atmospheric Sciences, University of Washington, Seattle, WA
98195, USA
Allen H. Goldstein
Department of Environmental Science, Policy, and Management, University of
California, Berkeley, CA 94720, USA
Department of Civil and Environmental Engineering, University of California,
Berkeley, CA 94720, USA
William Vizuete
CORRESPONDING AUTHOR
Department of Environmental Science and Engineering, The University of North
Carolina at Chapel Hill, Chapel Hill, NC 27516, USA
Model code and software
CMAQ (Version 5.2.1) US EPA Office of Research and Development https://doi.org/10.5281/zenodo.1212601
Short summary
Accurate model prediction of aerosol concentrations is a known challenge. It is assumed in many modeling systems that aerosols are in a homogeneously mixed phase state. It has been observed that aerosols do phase separate and can form a highly viscous organic shell with an aqueous core impacting the formation processes of aerosols. This work is a model implementation to determine an aerosol's phase state using glass transition temperature and aerosol composition.
Accurate model prediction of aerosol concentrations is a known challenge. It is assumed in many...
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