风廓线雷达在强降水监测预警中的应用研究

南京大学学报(自然科学版) ›› 2014, Vol. 50 ›› Issue (6): 865–872.

风廓线雷达在强降水监测预警中的应用研究

吴蕾1，董丽萍2，王令3，王国荣3

出版日期:2014-11-11 发布日期:2014-11-11
作者简介:(1 中国气象局气象探测中心,北京,100081; 2 安徽四创电子股份有限公司,合肥,230088; 3 北京市气象台,北京,100089)
基金资助:
公益性气象行业专项（GYHY201306136）和国家重点基础研究发展计划（973计划）课题“突发性强对流天气的外场科学试验”（2013CB430101）

The Application of Wind Profiler Radar in the Mornitoring and Warning of Heavy Rainfall Events

Wu Lei1, Dong Liping2, Wang Ling3, Wang Guorong3

Online:2014-11-11 Published:2014-11-11
About author:(1Meteorological Observation Centre of China Meteorological Administration, Beijing 100081 China.; 2 Anhui Sun Create Electronic CO.,LTD, Hefei 230088 China; 3 Beijing Meteorological Observatory, Beijing, 100089 China)

摘要/Abstract

摘要： 本文在风廓线雷达观测风场的基础上发展了低空风切变指数、高低空急流指数和温度平流三种产品算法，并将其用于两次强降水过程的监测预警研究。通过分析强降水发生前后风廓线雷达二次产品的变化得出：低空风切变指数在降水开始和结束时均会出现较大幅度的增长；低空急流指数一般在降水前3-4个小时开始增强，降水减弱时则大幅减小；高空急流指数在降水前2个小时左右会出现小幅的波动；此外，高低层冷暖平流强度和厚度的变化与降水过程也有很好的对应关系。

Abstract: In this study, products of low-level wind shear index, upper and lower -level jet stream index and temperature advection which based on wind profiler radar observation are developed and introduced. Two severe precipitation events were selected to study the tendency of three newly developed indexes before and after the precipitation. The results show that the low-level wind shear index increased at the beginning and the end of the precipitation which is helpful in monitor ing the rainfall ; the low-level jet stream index usually increased sharply 3 to 4 hours before the precipitation and decreased as the rainfall dissipating. For the upper-level jet stream index, a fluctuation was found usually 2 hours before the precipitation . For the temperature advection, it was found that the variation of warm and cold advection thickness and intensity in the upper- and lower level is highly related to the evolution of the rainfall process

吴蕾1，董丽萍2，王令3，王国荣3. 风廓线雷达在强降水监测预警中的应用研究[J]. 南京大学学报(自然科学版), 2014, 50(6): 865–872.

Wu Lei1, Dong Liping2, Wang Ling3, Wang Guorong3. The Application of Wind Profiler Radar in the Mornitoring and Warning of Heavy Rainfall Events[J]. Journal of Nanjing University(Natural Sciences), 2014, 50(6): 865–872.

参考文献

[1] 翟亮. 北京奥运期间一次暴雨过程风廓线资料特征. 气象,2008(S1):26~31.
[2] 郭虎,王令,时少英等. 国庆60周年演练中一次降水过程的短时预报服务. 气象,2010(10):21~28.
[3] 郑媛媛,姚晨,郝莹等. 不同类型大尺度环流背景下强对流天气的短时临近预报预警研究. 气象,2011(7):795~801.
[4] 吴志根. 边界层风廓线雷达在降水时段中的在线分析应用研究. 气象,2012(6):758~763.
[5] 顾映欣,陶祖钰. UHF多普勒风廓线雷达资料的初步分析和应用. 气象,1991(1):29~34.
[6] 刘淑媛,郑永光,陶祖钰. 利用风廓线雷达资料分析低空急流的脉动与暴雨关系. 热带气象学报,2003(3):285~290.
[7] 杨波,魏东. 二次开发风廓线探测资料及其在天气预报中的应用. 气象科技,2010(4):413~417.
[8] 翟亮,王令,刘文军. 两次降雪天气过程预报中边界层风廓线雷达资料的应用. 气象科技,2012(5):783~788.
[9] 石步鸠, 纪鹏飞. 风廓线仪在低空风切变探测中的应用初探. 第三届海峡两岸航空气象与飞行安全研讨会论文集, 2008.
[10] Zhou Binbin，NOAA/NWS/NCEP/EMC，October 21, 2004，Verification of SREF Low-Level Wind Shear (LLWS).
[11] 寿绍文. 中尺度气象学. 第二版. 北京: 气象出版社, 2009:58~61.
[12] 曹春燕,江崟,孙向明. 一次大暴雨过程低空急流脉动与强降水关系分析. 气象,2006(6):102~106.
[13] 寿绍文. 天气学. 北京: 气象出版社, 2009:90~98.

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