中文摘要：

云与辐射的相互作用对全球的天气和气候变化过程有着重要的影响，不同高度的云有着不同的辐射强迫，获得云体高度及其在时空上的变化对研究全球气候的变化有着重要意义。本文利用云卫星上的云廓线雷达（cloudsat／CPR）2006年6月2007年12月期间的资料，对比分析了青藏高原、高原南坡和南亚季风区域不同云类的云顶、云底高度和云厚统计量。结果表明，在所研究区域单位面积上的云顶和云底高度变化具有一定的时空连续性，不同云类的云顶和云底高度存在不同的变化范围，且随着季节的改变均有明显的变化；同时各区域不同云类的云体厚度在夏季较大，冬季较小；各区域不同云类所占的比例（云量）也具有一定的季节变化规律。

英文摘要：

Cloud-radiation interaction has a large impact on the Earth＇s weather and climate change, and clouds with different heights cause different radiative forcings. Thus, the information on the statistics of cloud height and its variation in space and time is very important to study the global climate change. In this paper, cloud top height（CTH）, cloud base height（CBH） and cloud thickness in the regions of Tibetan Plateau, Plateau south slope and South Asian Monsoon are analyzed based on the CloudSat data during the period from June 2006 to December 2007. The results show that frequency of cloud top heights and cloud base heights in unit area over the studied regions have some certain space-time continuity. The CTH and CBH of different cloud types changed in various range, and have visible seasonal changes. The cloud thickness is large （small） in summer （winter）, and the percentage of different cloud types also have some certain regularity.