The fall speeds of sub-100 micron ice crystals
Atmospheric and Oceanic Physics
2009-11-13 v2
Abstract
Estimates for the sedimentation rate of realistic ice crystals at sizes smaller than 100 m are presented. These calculations, which exploit new results for the capacitance of ice crystals, are compared with laboratory studies and found to be in good agreement. The results highlight a weakness in contemporary ice particle fall speed parameterisations for very small crystals, which can lead to sedimentation rates being overestimated by a factor of two. The theoretical approach applied here may also be useful for calculating the sedimentation rate and mobility of non-spherical aerosol particles.
Keywords
Cite
@article{arxiv.0801.1618,
title = {The fall speeds of sub-100 micron ice crystals},
author = {C. D. Westbrook},
journal= {arXiv preprint arXiv:0801.1618},
year = {2009}
}