冰雪散射和热辐射的定量研究
QUANTITATIVE APPROACH TO SCATTERING AND THERMAL EMISSION OF SNOW ICE
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摘要: 本文研究了冰雪样品的相关函数及其相关长度与等效球形冰粒子有效平均半径的对应关系;利用密集粒子的矢量辐射传输方程,数值计算了包括多次散射的一层冰雪的微波热辐射,并与星载遥感的实验测量结果进行了比较和讨论。Abstract: By using an image of snow sample, the correlation function and correlation length were obtained experimentally. Then the effective radius of discrete spherical scat-terer in the radiative transfer model was determined. By solving the vector radiative transfer equation for a slab of densely-distributed scatterers, the polarized brightness temperatures, including multiple scattering effect, from a layer of snow were numerically calculated, and favorably compared with the measurements from spaceborne remote sensing.
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曾亮,金亚秋,物理学进展,10(1990)1,57-99.[2]A. Stogryn, IEEE Trans. on GR, GR-7.2(1984)2, 150-154.[3]A. Range, A. Chang, J. L. Foster, Nodic Hydrology, 10(1979)1, 25-40.[4]J, C. Shiue et al., Remote sensing of snowpack with microwave radiometers for hydrologic application, proc. 12th Int. Symp. Rem. Rem. Sens. Enviren., Vol. 2, Ann. Arbor. (1978), no. 877-886. -
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