199李强等:2013年夏季宁夏一次强降水过程风廓线雷达回波特征分析
第3期
Characteristics Analysis of Radar Echo of the Wind Profile in a Heavy Rainfall Process on July9,2013in Ningxia
LI Qiang1,2,3,CUI Yang1,2,4,TA N Zhiqiang1,2,3,CHAO Yuan1,2,3,YANG Jing1,2,3,ZHANG Suzhao1,2,3 (1.Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions,CMA,Yinchuan750002,China;2.Key Laboratory for Meteorological Disaster Preventing and Reducing of Ningxia,Yinchuan750002,China;3.Ningxia Meteorological Obrvatory,Yinchuan750002,China;4.Ningxia
Climate Centre,Yinchuan750002,China)
Abstract:The heavy precipitation process occurred on July9,2013,in Ningxia.Bad on the data of boundary wind profile radar,the radar echo characteristics of Doppler radar and conventional obrvation data during the period of the maximum rainfall in the heavy rainfall process are analyzed.T
he obtained results are as follows:Precipitation intensity occurred in the obrvation station of Lingwuis more than that occurred in Yinchuan,which is induced by the easterly jet and the wind shear over Lingwu obrvation station which is clo to700hPa.The atmospheric humidity is less from the ground to the height of 900m over the obrvation station of Yinchuan,which leds to the less accumulation precipitation in Yinchuan station than in Lingwu.The data of wind profile radar has significant characteristics during the period of strongest rainfall over the obrvation station of Lingwu.The velocity spectrum width in middle and lower troposphere maintains1.2m/s and extends to the ground.The maximum velocity spectrum width is2.0m/s in700hPa.There are10layers with a signal to noi ratio of 35dB.The refractive index structure parameter is1.0×10-10nearly700hPa.The downward vertical velocity is10m/s in the middle and lower troposphere.The above results reveal the relationships among the heavy precipitation process and the products of boundary wind profile radar.In addition,the results are lected as diagnostic standard for the heavy precipitationin Lingwu station.
Key words:wind profiling radar;horizontal wind profile;velocity spectrum width;signal-to-noi ratio;refractive index structure parameter;vertical velocity
粤语学习网（责任编辑、校对王德平）
教师节班会主持词《宁夏工程技术》征稿启事oxforddictionary
jane eyre《宁夏工程技术》是国家科学技术部和新闻出版总署批准创办的公开发行的科技期刊，由宁夏大学主办，宁夏回族自治区教育厅主管。
办刊宗旨：（1）及时向社会报道工程界的新材料、新工艺、新技术应用和新产品开发等方面
的研究和实践成果；
（2）为工程技术人员搭建交流经验和探讨问题的平台。
cesar
主要栏目：（1）工程理论与新技术；
（2）工程设备与新材料；
（3）工程规划设计与管理；
（4）工程应用与评价；infeld
（5）工程研究进展。
mark是什么
特色栏目：（1）防灾减灾；
（2）节水灌溉与水资源。decent什么意思>cashier
主要刊登电力、电气、石油、化工、冶金、矿业、土木、建筑、机械、通信、食品、水利工程、生物技术、交通运输、城市环境等领域中的研究和实践成果。
本刊为季刊，每季度末月下旬出版。欢迎研究人员和工程技术人员踊跃投稿。
>allergan
