It is concluded that homogeneous ice nucleation is responsible for the ice production in these clouds at temperatures below about -33°C. The lack of ice nucleation observed above -33°C indicates a dearth of ice-forming nuclei, and hence heterogeneous ice nucleation, in these clouds. Aircraft measurements in the temperature range -31° to -41°C show the following complement of simultaneous and abrupt changes in cloud properties that indicate a transition from the liquid phase to ice; disappearance of liquid water; decrease in relative humidity from near water saturation to ice saturation; increase in mean particle size; change in particle concentration; and change in temperature due to the release of latent heat. A numerical model of cloud particle growth and homogeneous ice nucleation is used to aid in interpretation of our in situ measurements. -from Authors
CITATION STYLE
Heymsfield, A. J., & Miloshevich, L. M. (1993). Homogeneous ice nucleation and supercooled liquid water in orographic wave clouds. Journal of the Atmospheric Sciences, 50(15), 2335–2353. https://doi.org/10.1175/1520-0469(1993)050<2335:HINASL>2.0.CO;2
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