气象2017，Vol.43Issue(11)：1374-1382,9.DOI:10.7519/j.issn.1000-0526.2017.11.006
基于CloudSat资料的东北地区降水云及非降水云垂直结构特征对比分析
Comparison of Vertical Structure Between Precipitation Cloud and Non-Precipitation Cloud Based on CloudSat Data over Northeast China
摘要
Abstract
Based on CloudSat and CALIPSO data from 2007 to 2010,the cloud vertical structure (CVS) over Northeast China (39°-53°N,119°-135°E) was analyzed.At first,the precipitation flag of CloudSat was validated by surface observation.Based on the validation,the parameters of CVS,especially that of precipitation cloud and non-precipitation cloud,were analyzed.The results show that the distribution of cloud fraction profile is bimodal and shows significant diurnal and seasonal variations.Single-layer cloud is the main type over Northeast China and most precipitation is generated by such cloud which is the main target of artificial rainfall enhancement.Most precipitation cloud is nimbostratus of low,cold,ice or mixed phase.Two-layer precipitation cloud is dominated by high-low or high-medium cold cloud,and most of the high cloud is cirrus or altostratus of ice phase while the low cloud is dominated by nimbostratus,stratocumulus or cumulus of mixed or ice phase.Significant differences of CVS between precipitation and non-precipitation are found.Precipitation is more likely to occur in the cloud with low cloud base (CB),thick cloud depth (CD),and thin cloud interlayer thickness (CIT).Meanwhile,the CB temperature of precipitation cloud is higher and varies significantly with seasons.关键词
云垂直结构/CloudSat/降水云/云类别Key words
cloud vertical structure/CloudSat/precipitation cloud/cloud type分类
天文与地球科学引用本文复制引用
刘旸,赵姝慧,蔡波,孙丽..基于CloudSat资料的东北地区降水云及非降水云垂直结构特征对比分析[J].气象,2017,43(11):1374-1382,9.基金项目
国家自然科学基金项目(41275152)和辽宁省自然科学基金项目(2015020773)共同资助 （41275152）
