基于CloudSat/CALIPSO资料的我国北方2个区域云垂直分布差异研究
投稿时间: 2016-05-17  最后修改时间: 2016-06-18  点此下载全文
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作者单位E-mail
邱玉珺 南京信息工程大学大气物理学院 qyj@nuist.edu.cn 
基金项目:国家自然科学基(41475035);江苏省自然科学基金(BK20131433);气象灾害教育部重点实验室(KLME1206);中国气象局气溶胶与云降水重点实验室课题(KDW1203)
中文摘要:本文选用2008.1-2014.10的CloudSat/CALIPSO卫星探测资料,对中国北方两个不同大气环境、纬度相同经度不同的4白4?区域云垂直结构及其微物理参量进行了对比研究。研究结果表明:1)2个区域暖云层、混合云层和冷云层出现概率(COP)有较大差别,区域1暖层云COP春季最大,区域2主要出现在夏秋季;区域1混合层COP最大值出现在冬季,区域2出现在春季;冷云层COP均在春季达到最大。2)COP高值区所在高度层厚度有明显的季节性差异,区域1的COP高值主要出现在夏冬季,区域2则主要出现在春夏季。区域1秋冬季云体雷达回波最大值强于区域2,但春夏季弱于区域1。3)区域2春秋季液水含量(LWC)、冰水含量 (IWC)、云滴有效半径(LRE,IRE)均高于区域1,以上对比结果与2个区域气溶胶消光系数分布特征有密切关系。
中文关键词:消光系数,云出现频率,垂直结构,云水含量,有效半径
 
Comparison of Cloud Properties in two Northern Regions in China based on CloudSat/CALIPSO
Abstract:This paper focused on investigating the difference of the cloud vertical properties over two 4皒4癮djacent regions centered at (N 39.5? E 116? as E1 region and at (N 39.5? E 112? as E2 in North China based on the CloudSat/CALIPSO data from January 2008 to October 2014. Results show that: 1) There is large difference of the cloud occurrence probability (COP) in warm, mixed- and cold cloud layers for E1 and E2. For E1, the largest COP of the warm cloud layers appear in spring. It appears in summer and autumn for E2. The COP of mixed cloud layers reaches the maximum of E1 in winter, for E2 in spring. COP of the cold cloud layers both reach maximum for E1 and E2 in spring. 2) There are clearly difference in different seasons for the layer thickness of high value region of COP. The layers of large COP mainly appear in spring and winter for E1 and spring and summer for E2. The largest reflectivity of E1 is stronger than that of E2 in autumn and winter. 3) The liquid water content (LWC) , liquid effective radius (LRE), ice effective radius (IRE) and ice water content (IWC) of E2 are larger than those of E1, which is closely related to the stronger aerosol loading in E1.
keywords:cloud radar  cloud height  cloud thickness  shortwave radiation  radiative forcing
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