桂西岩溶区云水分布和移动特征  

Distribution and Movement Characteristics of Cloud Water in Karst Areas in Western Guangxi

作　　者：张正国[1] 陈燕丽 简悦 程鹏[1] 莫伟华 ZHANG Zhengguo;CHEN Yanli;JIAN Yue;CHENG Peng;MO Weihua(Guangxi Provincial Weather Modification Office,Nanning 530022,China;Guangxi Institute of Meteorological Sciences/Guangxi Ecological Meteorology and Satellite Remote Sensing Center/Guangxi Baise Karst Ecological Meteorology Field Science Experiment Base,Nanning 530022,China;3D-SPACE Software Co.,Ltd,Fuzhou 350100,China)

机构地区：[1]广西壮族自治区人工影响天气办公室,南宁530022 [2]广西壮族自治区气象科学研究所/广西生态气象和卫星遥感中心/广西百色岩溶生态气象野外科学试验基地,南宁530022 [3]三维时空软件股份有限公司,福州350100

出　　处：《高原山地气象研究》2024年第3期129-136,共8页Plateau and Mountain Meteorology Research

基　　金：广西重点研发计划(桂科AB21238010)。

摘　　要：利用欧洲中期天气预报中心(ECMWF)发布的第五代全球大气再分析资料(ERA5)和中国气象局人工影响天气中心发布的云水资源监测评估方法,研究广西西部岩溶地貌区2002—2021年云水资源总量、时空分布及移动特征。结果表明:桂西年均水凝物总量约22.5×10^(13)kg,水凝物降水效率约为65.5%,年均云水资源总量约7.8×10^(13)kg。水平分布上,云水在冬、春和夏季主要呈东北和西南高、西北和南部低的鞍形场分布特征,秋季呈自西北向东南逐步降低的阶梯型分布特征;垂直分布上,秋、冬和春季主要是分布在925~600 hPa低层的暖云云水,夏季主要是分布在600~400 hPa中层的冷云云水。中层云水主要以向东移动为主,低层云水有2个主要移动方向,分别为向北到东北方向移动和向西到南偏西方向移动。云水的水平输送通量呈冬春季较大、夏秋季较小的特点。Based on the fifth Generation Global Atmospheric Reanalysis Data(ERA5)released by the European Centre for Medium-Range Weather Forecasts(ECMWF)and the cloud water resources monitoring and evaluation method released by the Weather Modification Center of China Meteorological Administration,the total amount,spatial and temporal distribution and movement characteristics of cloud water resources in the karst area of western Guangxi from 2002 to 2021 were studied.The results show that the average annual total amount of water condensate in western Guangxi is about 22.5×10^(13) kg.The precipitation efficiency of water condensate is about 65.5%.The average annual total amount of cloud water resources is about 7.8×10^(13) kg.The horizontal distribution of cloud water in winter,spring and summer is mainly characterized by saddle field distribution of high in northeast and southwest,low in northwest and south.In autumn,it is mainly characterized by stepwise distribution of gradually decreasing from northwest to southeast.In terms of vertical distribution,warm cloud water is mainly distributed in the low level of 925~600 hPa in autumn,winter and spring,and cold cloud water is mainly distributed in the middle level of 600~400 hPa in summer.The cloud water in the middle layer mainly moves eastward,while the cloud water in the lower layer has two main moving directions,which are moving between northward and northeastward and moving between westward and southwestward.The horizontal transport flux of cloud water is larger in winter and spring,and smaller in summer and autumn.

关 键 词：云水资源 时空分布 水凝物通量 玫瑰图 

分 类 号：P426[天文地球—大气科学及气象学]