In a preliminary experimental program, the measured bidirectional reflection properties between 1.0 and 3.5 μm from a grating spectrometer with a resolution of approximately 0.1 μm for ice crystal clouds generated in a cold chamber are compared with theoretical results computed from a line-by-line equivalent solar radiative transfer model. The theoretical calculations are based on the measured habits, concentrations, and sizes of the ice particles from replicas of the ice crystals that show a mean maximum size of approximately 7 μm. The experimental design was first tested with transmission measurements in a pure water-vapor environment that compare closely with theoretical expectations. Within the uncertainties and in consideration of the assumptions necessitated by the preliminary nature of this program, there is a close comparison between the experimental and theoretical results.
© 2000 Optical Society of America
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.1310) Atmospheric and oceanic optics : Atmospheric scattering
(010.2940) Atmospheric and oceanic optics : Ice crystal phenomena
Brian Barkey, K. N. Liou, Yoshihide Takano, and Werner Gellerman, "Experimental and Theoretical Spectral Reflection Properties of Ice Clouds Generated in a Laboratory Chamber," Appl. Opt. 39, 3561-3564 (2000)