基于NPP卫星反演四川盆地夏季云降水微物理特征  

Retrieval of Microphysical Properties of Summer Cloud Precipitation in Sichuan Basin based on NPP Satellitedata

作　　者：范思睿[1,2,3] 王维佳 刘贵华 刘平 FAN Sirui;WANG Weijia;LIU Guihua;LIU Ping(Weather Modification Office of Sichuan Province,Chengdu 610072,China;Key Laboratory for Cloud Physics of China Meteorological Administration,Beijing 100081,China;Key Laboratory of Atmosphere Sounding,China Meteorological Administration,Chengdu 610225,China;Chengdu Meteorological Bureau,Chengdu 611133;Meteorological Institute of Shanxi Province,Xian 710016,China)

机构地区：[1]四川省人工影响天气办公室,四川成都610072 [2]中国气象局云雾物理环境重点开放实验室,北京100081 [3]中国气象局大气探测重点开放实验室,四川成都610225 [4]成都市气象局,四川成都611133 [5]陕西省气象科学研究所,陕西西安710016

出　　处：《成都信息工程大学学报》2021年第4期467-471,共5页Journal of Chengdu University of Information Technology

基　　金：四川省科技计划资助项目(2019YJ0621);中国气象局云雾物理环境重点开放实验室开放课题资助项目(2019Z01602);中国气象局大气探测重点开放实验室开放课题资助项目(2021KLAS04M);高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金资助项目(SCQXKJQN2019025、2018-青年-19、2017-青年-15)。

摘　　要：为研究四川盆地夏季云降水宏、微观特征以及内部降水机制,利用NPP卫星资料反演四川盆地云降水微物理特征参数,对比分析四川盆地夏季午后强降水云和非降水云的宏、微物理结构。结果表明,通过NPP/VIIRS卫星资料反演可以清晰看到四川盆地夏季午后云发展状况,了解云降水微物理特征。四川盆地夏季午后生成过冷水云、对流云、层积云和卷云等多种类型云,其中过冷水云云顶温度在-5℃~-10 ℃,粒子有效半径Re为7~15 μm,粒子小且均匀;对流云云顶温度在-30℃~-37℃,Re为15~40 μm,粒子分布不均,主要发生混合相增长和冰化增长,约在-10 ℃以上为冰化增长带;层积云云顶温度为-10℃~-15℃,Re为10~20 μm;卷云稀薄,云顶温度为-30℃,云底温度为-23℃,Re为10~15 μm。四川盆地能否产生强降水主要取决于高低云配置情况和过冷水云面积,当高低云配置不好时,同时对流云下没有大面积过冷水云供应水汽,或者低云中的大滴不足,会造成地面降水较小或者无降水;当高云主要是从中低云发展而来时,过冷水云成片分布说明此区域过冷水丰富,为粒子发展成雨滴提供有利条件。For studying the macro and micro characteristics of cloud precipitation in summer in the Sichuan Basin and the internal precipitation mechanism,the NPP satellite data was used to retrieve the microphysical characteristics of cloud precipitation in the Sichuan Basin,and the macro and microphysical characteristics of heavy and non-precipitation clouds in the summer afternoon in the Sichuan Basin were compared structure.The results show that the NPP/VIIRS satellite can clearly see development condition of summer afternoon clouds in the Sichuan Basin,which can understand cloud microphysical properties.Various types of clouds such as supercooled water clouds,convective clouds,stratocumulus clouds and cirrus clouds are generated in the Sichuan Basin in the summer afternoon.The temperature of the supercooled water cloud top is-5 ℃--10 ℃,the particle radius Re is 7-15 μm,and the particles are small and uniform;the temperature of the cloud top of the convective cloud is-30 ℃--37 ℃,the particle radius Re is 15-40 μm,the particle distribution is uneven,and the mixed phase growth and glacial growth mainly occur.Above about-10℃,the glacial growth zone;stratification The cloud top temperature is-10 ℃--15 ℃,the particle effective radius Re is 10-20 μm;the cirrus cloud is thin,the cloud top temperature is-30 ℃,the cloud bottom temperature is-23 ℃,and the particle Re is 10-15 μm.Whether the Sichuan Basin can produce heavy precipitation mainly depends on the configuration of high and low clouds and the area of supercooled water clouds.When the configuration of high and low clouds is not good,there is no large area of supercooled water clouds under convective clouds to supply water vapor,or there are insufficient large droplets in low clouds,which will cause little or no precipitation on the ground.When high clouds are mainly developed from middle and low clouds,the distribution of supercooled water clouds in patches indicates that the area is rich in supercooled water,which provides favorable conditions for p

关 键 词：大气物理 云降水 NPP卫星反演 云微物理反演 四川盆地 过冷水云 

分 类 号：P421.1[天文地球—大气科学及气象学]