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气象:2017,43(2):206-212
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基于CloudSat识别飞机积冰环境中的过冷水滴
(1.中国民用航空飞行学院空中交通管理学院,广汉 618307 中国科学院大气物理研究所,北京 100029 中国科学院大学,北京 100049;2.中国民用航空飞行学院空中交通管理学院,广汉 618307;3.中国科学院大气物理研究所,北京 100029)
Identifying the Supercooled Liquid Water in Aircraft Icing Condition Using CloudSat Satellite Data
(1.College of Air Traffic Management, Civil Aviation Flight University of China, Guanghan 618307 Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 University of Chinese Academy of Sciences, Beijing 100049;2.College of Air Traffic Management, Civil Aviation Flight University of China, Guanghan 618307;3.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029)
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投稿时间:2015-12-01    修订日期:2016-08-04
中文摘要: 利用CloudSat资料对127次积冰报告的积冰类型、云类、温度和过冷水含量进行统计分析,结果表明:大多数积冰发生在-20℃以上的温度环境中,-20℃以下只发生了4次。明冰主要发生在-5~0℃;毛冰主要发生在-20~-10℃;混合冰主要发生在-15~-5℃。大多数积冰发生在层积云、雨层云和高层云中。过冷水含量随着温度降低而减少,并且过冷水含量的分布范围随着温度降低而变窄。2B CWC RO产品垂直剖面上水凝物含量数据能较好地识别出层积云、高层云和雨层云中的过冷水,但未能识别-20℃以下卷状云和对流云的过冷水。
Abstract:The statistic characteristics of 127 PIREPs (pilot reports) including icing type, cloud classification, temperature and supercooled liquid water content are investigated based on the CloudSat data. The results indicate that most of the aircraft icing events happened in the environment with temperature above -20℃, only four appeared below -20℃. Clear ice mainly occurs between -5~0℃, rime ice between -20~-10℃, and mixed ice between -15~-5℃. Most aircraft icing happens in the stratocumulus (Sc), altostratus (As), and nimbostratus (Ns). The supercooled liquid water content and its distribution decrease with decreasing temperature. 2B CWC RO product can identify the supercooled liquid water in the Sc, As and Ns, but it can’t identify the supercooled liquid water in cirriform cloud and convective cloud when temperature is below -20℃.
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基金项目:国家自然科学基金民航联合研究基金(U1333130)和中国民用航空飞行学院重点项目(ZJ2014 02)共同资助
引用文本:
袁敏,段炼,平凡,吴俊杰,2017.基于CloudSat识别飞机积冰环境中的过冷水滴[J].气象,43(2):206-212.
YUAN Min,DUAN Lian,PING Fan,WU Junjie,2017.Identifying the Supercooled Liquid Water in Aircraft Icing Condition Using CloudSat Satellite Data[J].Meteor Mon,43(2):206-212.