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Development of Heterogeneous Ice Nucleation Rate Coefficient Parameterizations From Ambient Measurements

Geophysical research letters, 2021-11, Vol.48 (23) [Peer Reviewed Journal]

ISSN: 0094-8276 ;EISSN: 1944-8007

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  • Title:
    Development of Heterogeneous Ice Nucleation Rate Coefficient Parameterizations From Ambient Measurements
  • Author: Cornwell, Gavin C. ; McCluskey, Christina S. ; DeMott, Paul J. ; Prather, Kimberly A. ; Burrows, Susannah M.
  • Subjects: ENVIRONMENTAL SCIENCES
  • Is Part Of: Geophysical research letters, 2021-11, Vol.48 (23)
  • Description: Ice nucleating particles (INPs) are a rare subset of particles that can have an outsized impact relative to their prevalence. To simulate INP variability, models require parameterizations for the most important sources of INPs. Most parameterizations in the literature were developed from laboratory experiments that used proxies for ambient particles. Whether these laboratory models effectively represent ambient aerosol is still not well understood and parameterizations developed from field measurements may be more atmospherically relevant. Expanding on previous work in which we used an ice chamber and a single-particle mass spectrometer (SPMS) to characterize INP composition, we calculate heterogeneous ice nucleation rate coefficients for ambient particles. We find good agreement between our dust and previous measurements of airborne dust. We also use a Monte Carlo approach to assess the relative contribution of each measurement to the uncertainty and find that the biggest source is the sampling efficiency of the SPMS.
  • Publisher: United States: American Geophysical Union
  • Language: English
  • Identifier: ISSN: 0094-8276
    EISSN: 1944-8007
  • Source: Wiley Blackwell AGU Digital Library
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