12th Conference on Cloud Physics
12th Conference on Atmospheric Radiation


3.9 Micron Albedo Characteristics of Midlevel Mixed-Phase Clouds


J. Adam Kankiewicz, Colorado State Univ., Fort Collins, CO; and S. Q. Kidder, T. H. Vonder Haar, and D. T. Lindsey

Recently completed field campaigns targeting midlevel mixed-phase clouds suggest that a vertical cloud structure composed of a supercooled liquid layer with ice virga precipitating below occurs more commonly than previously thought. Midlevel clouds topped with supercooled liquid were also observed to be spatially extensive and long-lived.

Spherical Harmonic Discrete Ordinate Method (SHDOM) radiative transfer retrievals performed on in-situ observations of midlevel mixed-phase clouds will be presented and compared with 3.9 micron channel albedo geostationary satellite observations of known mixed-phase clouds.

Early results indicate good potential for the use of 3.9 micron albedo information in helping to qualitatively, and possible quantitatively, identify significant aircraft icing hazards, especially at night.

Joint Poster Session 2, Radiative Properties of Clouds (Joint with 12th Conference on Atmospheric Radiation & 12th Conference on Cloud Physics)
Wednesday, 12 July 2006, 5:00 PM-7:00 PM, Grand Terrace

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