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该文选取1983年7月和1984年1月分别代表夏季和冬季,利用中国地面气象月报的云量资料以及多年平均的地面观测云气候资料,与中国大陆地区ISCCP卫星反演的云量和云状资料进行了对比分析。结果表明:月平均总云量的分布形势,卫星反演与地面观测结果相当一致,相对多云和少云中心位置吻合较好;但两种观测结果的云量值存在差异,卫星反演结果普遍偏低,冬季比夏季更明显,清晨比正午更明显;青藏高原东北部、云贵高原以及天山附近地区偏差较显著。参照大气环流和云天气气候特征,从卫星得到的云状是比较合理的,但干旱沙漠地区高云量估计不足,低云估计偏多。
In this paper, we select the cloud volume data from July 1983 and January 1984 respectively for summer and winter, using the monthly cloud data of China Meteorological Monthly, Cloud-like data were analyzed. The results show that the monthly average cloud distribution, the satellite inversion and the ground observation are quite consistent, the relative cloudy and the cloud center are in good agreement, but there are differences between the two observation results and the satellite inversion results are common Low in winter, more obvious in summer than in summer, and more obvious in early morning than at noon. Deviations in northeastern Qinghai-Tibet Plateau, Yunnan-Guizhou Plateau and Tianshan Mountains were significant. With reference to the general circulation of the atmosphere and the climatic and climatic characteristics of the cloud, the cloud shape obtained from the satellites is quite reasonable, but the high cloud amount in the arid desert area is underestimated and the low cloud is estimated to be too large.