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多光谱的MODIS(中分辨率成像光谱仪)数据为深入研究全球卷云提供了可能性。基于卷云辐射系统模型,利用MODIS的1.38μm波段(26通道)和0.66μm波段(1通道)探测数据的相关性,反演计算可见光波段卷云的反射率。反演计算中,使用1km分辨率的MODIS 1B数据,对MODIS典型图幅进行不同等分的划分,分别给出反演结果并进行对比分析,结果表明等分份数越多,其反演结果的精度越高,最后给出了反演结果的实际应用。
Multispectral MODIS (Mid-Resolution Imaging Spectrometer) data provide the potential for further research on global cirrus. Based on the model of the coil cloud radiation system, the correlation between the MODIS data of 1.38μm band (26 channels) and 0.66μm band (1 channel) was obtained. The reflectance of cirrus clouds in the visible region was calculated by inversion. In the inversion calculation, MODIS 1B data of 1km resolution is used to divide the typical MODIS map into different aliquots. The inversion results are given separately and compared with each other. The results show that the more the equal parts, the inversion results The higher the accuracy, finally the practical application of inversion results is given.