中文摘要：

利用近5年（2006年6月～2011年4月）的Cloudsat卫星资料分析了东亚大陆云垂直结构特征。结果表明：（1）降水（文中可降水是根据观测到的可降水粒子信息计算到达地面的降水，并不是指地面观测到的实际降水）云和非降水云的雷达反射率（回波）垂直分布存在-定差异，除降水云反射率通常接地外，降水云主要集中在8km以下，反射率通常为-20-15dBz，非降水云主要集中在4—12km，反射率为-28～0dBz；降水云雷达反射率频数大值中心在2～4km，对应的雷达反射率为0—10dBz，而非降水云出现在8—10km，且对应的雷达反射率为-26-24dBz；（2）从雷达反射率廓线来看，降水云中雷达反射率随高度的变化先增强后减弱，而非降水云几乎不变；（3）液态降水云、固态降水云和毛毛雨降水云反射率的垂直分布明显不同；（4）液态降水云自11至7km雷达反射率迅速增强，表明此高度是粒子快速增长的优势空间；（5）固态降水云中-15°C温度频数分布与雷达反射率频数大值中心有很好的对应关系，表明在-15°C附近的条件下冰相粒子凝华-碰冻是粒子增长的优势过程；（6）云的垂直结构随着季节变更而变化，降水云春季、夏季和秋季的雷达反射率垂直分布变化不明显，而冬季主要在低层；固态降水云的垂直分布频数大值中心从春季至冬季呈“双-单”中心交替变化，且与云中-15°C频数分布变化-致；非降水云雷达反射率垂直分布没有明显的季节变化；（7）深对流云和雨层云是形成降水粒子的主要云型。

英文摘要：

The Cloudsat satellite data during June 2006 to April 2011, were used to investigate the cloud vertical profiles over the East Asian region （20°- 50° N, 80°- 120° E）, with particular emphasis on comparing the differences between radar reflectivity profiles of precipitation and non-precipitation clouds, as well as seasonal variations of these profiles. The results show that.. （1） Generally, the radar reflectivity of precipitation clouds mainly locates at below 8 km with dBz between -20 and 15, while the radar reflectivity of non-precipitation clouds locates at 4 - 12 km with dBz between - 28 - 0 with the radar reflectivity of precipitation being able to usually reach to ground; （2） there are differences among liquid precipitation, solid precipitation, and possible drizzle precipitation clouds profiles; （3） the radar reflectivity increases gradually from 11 km to 7 km with the tem- peratures always below O°C in liquid precipitation clouds, suggesting that condensation and collision-coalescence processes play a vital role in the formation of large-size liquid drops; （4） the frequency distribution of temperature at - 15°C is consistent with the high radar reflectivity in solid precipitation clouds, meaning that the temperature at - 15°C or so is advantageous to deposition and accretion processes; （5） the vertical distribution of liquid precipitation clouds changes slightly from spring to autumn, but mainly in the low-level in winter° the vertical distribution of solid precipitation clouds changes with alternate double and single high-frequency with the season, and this is consistent with the variation of the frequency distribution of temperature at - 15°C ° the non-precipitation clouds vertical distribution changes little with seaso and （6） the deep convective and nimbostratus clouds are the major types of cloud generating precipitation drops.