92nd American Meteorological Society Annual Meeting (January 22-26, 2012)

Wednesday, 25 January 2012: 9:00 AM
Temperature-Dependent Microwave Optical Properties of Nonspherical Ice Particles
Room 257 (New Orleans Convention Center )
Lei Bi, Texas A&M Univ., College Station, TX; and P. Yang

The optical properties of nonspherical ice particles depend significantly on temperature in the microwave spectrum regime. We develop the single-scattering properties of 10 representative ice habits (columns, hollow columns, plates, droxtals, and other complex morphologies) within a temperature range from 160 to 270 K for an electromagnetic spectrum from 3 to 1000 GHz. The pseudo-spectral time-domain method (PSTD) and discrete-dipole-approximation (DDA) method that solve Maxwell's equations are employed to simulate the light scattering process. The developed dataset can be applied to microwave remote sensing (e.g., retrievals of cloud ice water content and snowfall rate).

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