摘要
采用经ENVI几何校正、定标及裁剪等预处理的2008年10月1日04:25和18:00(UTM)的MODIS L1B数据,利用MODIS云检测Ackerman方法及云相态反演红外二光谱技术,对长春地区进行了云检测和云相态反演。从检测及反演结果中看出,云检测及白天云相态反演效果都很好,而在夜晚条件下,由于低温,存在较大面积的不确定相态区域。
According to the Ackerman's MODIS cloud detection technology and bispectral IR method,cloud detection and cloud phase retrieval in Changchun were conducted using MODIS L1B data at 04:25 and 18:00 on October 1,2008(UTM).The data were geometric corrected,calibrated and clipped by ENVI before being used.The results showed that the cloud detection and day cloud phase retrieval were effective,but the night cloud phase retrieval was not so effective owing to the low temperature in the night.
出处
《遥感技术与应用》
CSCD
北大核心
2010年第2期245-250,共6页
Remote Sensing Technology and Application
基金
国家自然科学基金项目(40471086)
国家863计划项目(2006AA12Z102)