冰雪散射和熱輻射的定量研究
QUANTITATIVE APPROACH TO SCATTERING AND THERMAL EMISSION OF SNOW ICE
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摘要: 本文研究了冰雪樣品的相關(guān)函數(shù)及其相關(guān)長(zhǎng)度與等效球形冰粒子有效平均半徑的對(duì)應(yīng)關(guān)系;利用密集粒子的矢量輻射傳輸方程,數(shù)值計(jì)算了包括多次散射的一層冰雪的微波熱輻射,并與星載遙感的實(shí)驗(yàn)測(cè)量結(jié)果進(jìn)行了比較和討論。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,金亞秋,物理學(xué)進(jìn)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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