Evolution of ice crystal regions on the microscale based on in situ observations

AMS Citation:
Diao, M., M. A. Zondlo, A. J. Heymsfield, S. Beaton, and D. C. Rogers, 2013: Evolution of ice crystal regions on the microscale based on in situ observations. Geophysical Research Letters, 40, 3473-3478, doi:10.1002/grl.50665.
Date:2013-07-13
Resource Type:article
Title:Evolution of ice crystal regions on the microscale based on in situ observations
Abstract: Microphysical properties of cirrus clouds largely influence their atmospheric radiative forcing. However, uncertainties remain in simulating/parameterizing the evolution of ice crystals. These uncertainties require more analyses in the Lagrangian view, yet most in situ observations are in the Eulerian view. Here we demonstrate a new method to separate out five phases of ice crystal evolution, using the horizontal spatial relationships between ice supersaturated regions (ISSRs) and ice crystal regions (ICRs). Based on global in situ data sets, we show that the samples of clear-sky ISSRs, ice crystal formation/growth, and evaporation/sedimentation are ~20%, 10%, and 70% of the total ISSR + ICR samples, respectively. In addition, the variance of number-weighted mean diameter (Dc) becomes narrower during the evolution, while the distribution of ice crystal number density (Nc) becomes wider. The new method helps to understand the evolution of ICRs and ISSRs on the microscale by using in situ Eulerian observations.
Peer Review:Refereed
Copyright Information:Copyright 2013 American Geophysical Union.
OpenSky citable URL: ark:/85065/d7959k3f
Publisher's Version: 10.1002/grl.50665
Author(s):
  • Minghui Diao
  • Mark Zondlo
  • Andrew Heymsfield - NCAR/UCAR
  • Stuart Beaton - NCAR/UCAR
  • David Rogers
  • Random Profile

    Director, High Altitude Observatory

    Recent & Upcoming Visitors