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首页> 外文会议>Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International >Single scattering of partly oriented aspherical cloud ice crystals at sub-millimeter wavelengths
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Single scattering of partly oriented aspherical cloud ice crystals at sub-millimeter wavelengths

机译：亚取向波长下部分取向的非球面云冰晶体的单次散射

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摘要

The recently suggested sub-millimeter sensors for the global observation of cirrus clouds all bear several channels widely separated from each other and spanning the range from 180 to 880 GHz. While the potential for retrieving the integrated ice water content and the mean effective particle size of ice clouds has been investigated, the quantitative retrieval of particle shape and orientation information is still an active research area. Here we investigate the influence of the parameters of a Gaussian distribution of the horizontal particle orientation on the single scattering cross section. It is only slightly affected, but the polarization signal is reduced to 90% of the completely horizontally oriented case if the standard deviation /spl sigma//sub /spl beta// of the horizontal distribution is 15/spl deg/ and reduced to 50% if /spl sigma//sub /spl beta// = 30/spl deg/.
机译：最近建议用于全球观测卷云的亚毫米传感器都具有几个相互间隔很远的通道，其范围从180到880 GHz。尽管已经研究了获取冰积分水含量和冰云平均有效粒径的潜力，但对颗粒形状和方向信息的定量检索仍是一个活跃的研究领域。在这里，我们研究了水平粒子方向的高斯分布参数对单个散射截面的影响。仅受到轻微影响，但是如果水平分布的标准偏差/ spl sigma // sub / spl beta //为15 / spl deg /，则偏振信号会减少到完全水平定向情况的90％如果/ spl sigma // sub / spl beta // = 30 / spl deg /，则为％。

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