雪的热辐射偏振特性定量研究

雪作为衡量全球气候变化有效的信息源之一，其热辐射存在偏振特性，且这一偏振特性会受到多因素的影响。为了定量分析单一因素及其交互作用对雪的热辐射偏振特性的影响，在传统分析的基础上，设计了三因素三水平的正交实验。结果表明，探测角、方位角和波段均对雪的热辐射偏振特性产生影响；探测角对雪的热辐射偏振度产生显著的影响；探测角与其他两因素的交互作用以及波段均对雪的热辐射偏振度产生显著影响；方位角对雪的热辐射偏振度有一定的影响，而它与波段的交互作用不会对雪的热辐射偏振度产生影响。因此，在研究中，既要考虑单因素本身对雪的热辐射偏振特性的影响，还要考虑交互作用的影响。

Quantitative Research on the Thermal Radiation Polarization Properties of Snow

As one of the valid sources to measure the global climate changes, snow has its own thermal radiation polarization properties, which are affected by multi-factors. For quantitative analysis of the effects of single factor and the interactions between factors on the thermal radiation polarization properties of snow, on the basis of traditional analysis, we design a three-factor and three-level orthogonal test. The results show that the detecting angle, azimuth angle and bands have impact on the thermal radiation polarization properties of snow. The detecting angle has high significant impact on the thermal radiation polarization degree of snow. The bands and the interactions of the detecting angle and other two factors significantly affect the thermal radiation polarization degree of snow. The azimuth angle has certain impact on the thermal radiation polarization degree of snow, and its interactions with the bands have no impact on the thermal radiation polarization degree of snow. Therefore, the effects of each single factor and their interactions on the thermal radiation polarization degree of snow should be considered in the research.