Immersion Freezing Effi ciency of Soot Particles with Various Physico-Chemical Properties
2,000 water droplets with soot particles immersed are monitored individually to establish the link between physico-chemical properties and freezing efficiency. Soot behaviour in water (relating with number density and agglomerate size), wetting, and water soluble fraction (WSF) are found as key parameters defining the freezing temperature. The maximum freezing efficiency, 6°C, is reported for homogeneously distributed low size soot agglomerates of low number density and with hydrophilic coverage.
Keywords Heterogeneous freezing, soot aerosols, wetting, hydration
KeywordsWater Droplet Soot Particle Water Soluble Fraction Soot Sample Soot Surface
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- Popovicheva, O.B., Persiantseva et al., J. Geophys. Res. Lett., 107 (D23): Art. no. 4734 (2004).Pruppacher, H.R. and Klett, J.D., Microphysics and Cloud Precipitation, Hingham MA: D. Reidel (1978).Google Scholar