我国西北沙源区地表热红外发射率特征分析

沙源区地表热红外发射率特性的研究对地表的组分和物理特征等的研究有重要意义。用102f测量了西北沙源区各类型地表的发射率。将测量结果与ASTER JHU波谱库数据对比，显示了测量的结果可靠性和必要性。分析结果表明，不同地表类型发射率差异显著，同种类型地表发射率因物理特征不同会呈现规律性差异，发射率在时间尺度上具有稳定性。测量的沙源区发射率数据及分析结果对沙尘暴相关研究有重要意义。

Analysis of thermal infrared emissivity for sand dust source regions in northwest China

Research on thermal infrared emissivity properties of sand dust source regions is very important to the study of the composition and physical characteristics of the land surface. Various types of surface emissivities of dust source regions in northwest China were measured by 102f. The comparing results between field measurements and the ASTER JHU spectral library data showed the reliability and necessity of the field measuring emissivity spectrums. Several analysis results showed that emissivity of different types of land surface had significant differences, the regularity differences of measurements with the same type surface were related to the different physical characteristics, and emissivity was relatively stable on the time scale for the same type. In summary, the measured emissivity data of sand dust source regions and analysis results play an important role in sandstorm related researches.