摘要
通过ＮＯＡＡ－１０、１１两颗卫星１９８９年５月至１９９０年４月一年间的ＡＶＨＲＲ资料，在作０．０１°等经纬度投影处理和定标、定位订正的基础上，利用红外阈值方法对２３．５—２８．５°Ｎ、９９—１０４°Ｅ，云南区域的云量进行计算，统计云量分布。根据对计算结果的分析，基本弄清了影响该地区的主要天气系统和云系，以及云的一些统计特征。此外，因云南天文台选址工作的需要，对给定的２１个候选点的云量进行提取，并将一个常规资料观测点云量用于与反演结果做比较，结果表明有较好的一致性。最后，得到云量最少的几个点，供云南天文台选址作参考。
The cloudiness over Yunnan area,which is located from 99-104°E and 23. 5-28. 5°N,was calculated by the Infrared Threshold method with the corrected multi-channel AVHRR data of NOAA-10, 11 in one year period (from May in 1989 to APril in 1990), and the statistical cloudiness distribution was also analysed. The synoptic system and cloud system influence this area mainly, moreover, some cloud climatological characteristics were found. The results were examined by comparing with conventional observational results. Cloudiness over 21 points were obtained,which could be provided Yunnan Astronomical Observatory.
出处
《气象》
CSCD
北大核心
1995年第1期32-36,共5页
Meteorological Monthly
关键词
云量
云特征
卫星数据
satellite data cloudiness cloud covery
