气象2025，Vol.51Issue(10)：1193-1202,10.DOI:10.7519/j.issn.1000-0526.2025.022601
中国过冷积状云的时空分布特征
Spatio-Temporal Distribution Characteristics of Supercooled Cumuliform Clouds in China
摘要
Abstract
A cumuliform cloud with supercooled water(shortened as supercooled cumuliform cloud)is the condition required for the icing test flight.On the basis of the cloud phase state,cloud classification and liquid water top height data from CloudSat-CALIPSO cloud products and the air temperature from ERA5 reanalysis data and focusing on the local solar afternoon data with good interannual continuity,we con-struct the historical supercooled cloud sample dataset over China during 2006-2019,and analyze the spatio-temporal distribution characteristics of supercooled cumuliform clouds.The supercooled cumuliform clouds in China mostly occur in the eastern part of the Qinghai-Xizang Plateau and extend to central China via the Yunnan-Guizhou-Sichuan region,with an annual average occurrence frequency of 0.4.The high-value areas of the occurrence frequency of supercooled cumuliform clouds are more westward than that of super-cooled stratiform cloud and the occurrence frequency is higher.The occurrence frequencies of the four types of supercooled cumuliform clouds in descending order were as follows:altocumulus over Yunnan,Central China and East China;stratocumulus over eastern Qinghai-Xizang Plateau,Sichuan,the eastern sea surface of China and outside the northern boundary of China;cumulus over the Qinghai-Xizang Plat-eau;and deep convection over southwestern Yunnan,Southeast China,and the eastern sea surface of China.In winter,there are three high-value centers of the occurrence frequency of supercooled cumuliform clouds from Sichuan Basin to Guizhou,the ocean over eastern China,and the Sea of Japan,while the high-value center of the occurrence frequency of supercooled cumuliform clouds in summer extends from the eastern part of the Qinghai-Xizang Plateau to other locations on the plateau and the surrounding mountainous areas.In addition,the interannual variation of supercooled cumuliform clouds shows a significantly in-creasing trend in January in Central China,the west of Northwest China and the west of the Qinghai-Xizang Plateau.关键词
过冷云/积状云/时空分布Key words
supercooled cloud/cumuliform cloud/spatio-temporal distribution分类
大气科学引用本文复制引用
杨涛,孙跃,闫文辉,张月晴,吴俊辉,杨慧玲,肖辉..中国过冷积状云的时空分布特征[J].气象,2025,51(10):1193-1202,10.基金项目
民用飞机专项科研项目(MJZ5-XXXX)、中国科学院战略性先导科技专项(XDB0760400)和国家自然科学基金项目(42105127)共同资助 （MJZ5-XXXX）
