CaltechAUTHORS
  A Caltech Library Service

Toward a Comprehensive Model of Snow Crystal Growth: 3. The Correspondence Between Ice Growth from Water Vapor and Ice Growth from Liquid Water

Libbrecht, Kenneth G. (2014) Toward a Comprehensive Model of Snow Crystal Growth: 3. The Correspondence Between Ice Growth from Water Vapor and Ice Growth from Liquid Water. , Pasadena, CA. (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20140721-082120941

[img]
Preview
PDF - Submitted Version
See Usage Policy.

339Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20140721-082120941

Abstract

We examine ice crystal growth from water vapor at temperatures near the melting point, when surface premelting creates a quasiliquid layer at the solid/vapor interface. Recent ice growth measurements as a function of vapor supersaturation have demonstrated a substantial nucleation barrier on the basal surface at these temperatures, from which a molecular step energy can be extracted using classical nucleation theory. Additional ice growth measurements from liquid water as a function of supercooling exhibit a similar nucleation barrier on the basal surface, yielding about the same molecular step energy. These data suggest that ice growth from water vapor and from liquid water are both well described by essentially the same underlying nucleation phenomenon over a substantial temperature range. A physical picture is emerging in which molecular step energies at the solid/liquid, solid/quasiliquid, and solid/vapor interfaces create nucleation barriers that dominate the growth behavior of ice over a broad range of conditions. Since the step energy is an equilibrium quantity, just as surface melting is an equilibrium phenomenon, there exists a considerable opportunity to use many-body simulations of the ice surface structure and energetics at equilibrium to better understand many dynamical aspects of ice crystal growth.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1407.0740arXivDiscussion Paper
Record Number:CaltechAUTHORS:20140721-082120941
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140721-082120941
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47353
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:21 Jul 2014 19:15
Last Modified:21 Jul 2014 19:15

Repository Staff Only: item control page