夏季念青唐古拉峰地区云结构分析  

Study of the cloud structure over the Mount Nyainqêntanglha during summer

作　　者：张晓[1] 段克勤[1] 刘焕才[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,甘肃兰州730000

出　　处：《水科学进展》2015年第2期196-200,共5页Advances in Water Science

基　　金：国家重点基础研究发展计划(973计划)资助项目(2010CB951703);国家自然科学基金资助项目(40971290)~~

摘　　要：利用2006—2010年夏季6-8月Cloud Sat资料对念青唐古拉峰地区云水分布和云类型特征进行分析,从而为研究高原天气过程与其水循环过程的相互作用提供理论依据。结果表明,云水含量垂直分布结构与云类型有关,而冰川区和非冰川区云类型差异主要为降水云类型不同,其中有冰川覆盖的高山上空降水云以深厚对流云为主,无冰川覆盖的高山降水云类型以雨层云为主。念青唐古拉峰南坡冰川区云水平均含量为0.14 g/m^3,非冰川区云水平均含量为0.18 g/m^3,一定程度说明来自孟加拉湾的水汽在经过冰川附近时,多会产生降水,反映了冰川对水汽传输的阻碍作用。Dynamic behavior of clouds has important implications on weather process and hydrological cycle over the Tibetan Plateau. Cloud Sat data were used to analyzed cloud types and their water content distribution during summer2006—2010,in Nyainqêntanglha Mount range. It was observed that cloud water content was affected by vertical distribution of cloud,cloud types. And the difference of the cloud types between the mountain glacier and the mountain non-glacierized was about the precipitation clouds,the precipitation clouds were mainly dominated by the deep convective clouds when the ground was covered over with glacier,and the precipitation clouds were dominated by the nimbostratus when the ground had no glacier. Averaged cloud water content on the southern slope over the glacier and non-glacier were 0. 14 g / m^3 and 0. 18 g / m^3,respectively,which indicated that the water vapor was easier to form precipitation when the water vapor approached the glacier,and the glacier had negative impact on the water vapor transport.

关 键 词：CLOUDSAT 云水含量 水汽传输 念青唐古拉峰 

分 类 号：P966.8[天文地球—自然地理学]