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[1]冯小真,肖 辉,孙 跃,等.基于双偏振雷达参量的层状云零度层亮带识别研究[J].成都信息工程大学学报,2019,(04):333-341.[doi:10.16836/j.cnki.jcuit.2019.04.002]
　FENG Xiaozhen,XIAO Hui,SUN Yue,et al.Identification of the Melting Layer based on the X-band Polarimetric Radar Scans[J].Journal of Chengdu University of Information Technology,2019,(04):333-341.[doi:10.16836/j.cnki.jcuit.2019.04.002]
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基于双偏振雷达参量的层状云零度层亮带识别研究

成都信息工程大学学报[ISSN:1006-6977/CN:61-1281/TN] 卷: 期数: 2019年04期 页码: 333-341 栏目: 电子信息科学与技术 出版日期: 2019-10-20
Title:
Identification of the Melting Layer based on the X-band Polarimetric Radar Scans
文章编号:
2096-1618(2019)04-0333-09
作者:
冯小真1; 2;  肖 辉2; 3;  孙 跃2; 3;  姚振东 1
(1.成都信息工程大学电子工程学院,四川 成都 610225; 2.中国科学院大气物理研究所 中 国科学院云降水物理与强风暴重点实验室 中国科学院减灾中心,北京 100029; 3.中国科学 院大学,北京 100049)
Author(s):
FENG Xiaozhen1; 2;  XIAO Hui2; 3;  SUN Yue2; 3;  YAO Zhendong1
(1.College of Electronic Engineering Chengdu University of Information and Technology,Chengdu 610225; 2 Key Laboratory of Cloud-Precipitation Physics and Severe Storms,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; 3 University of Chinese Academy of Sciences, Beijing 100049)
关键词:
X波段双偏振雷达;  质量控制;  零度层;  亮带识别
Keywords:
X-band dual polarization radar;  attenuation correction;  the melting layer;  bright band identification
分类号:
TN957.52+4
DOI:
10.16836/j.cnki.jcuit.2019.04.002
文献标志码:
A
摘要:
零度层亮带(ML)是降水性层状云的一个重要特征,它对雷达定量估计区域降水有很大影 响,如何减小这种影响是雷达气象探测非常关心的科学问题。双偏振雷达能够提供双偏振参 数信息,在云降水粒子相态识别、粒子尺度分布等方面有优势。利用X波段双偏振雷达观测数 据,对差分相位移φDP滤波、又滤波后的φDP由定 义式重构得到KDP,对反射率因子ZH以及差分反射率 ZDR由KDP订正法进行衰减订正。以距离-高度扫描 (RHI)图像为基础,通过双偏振参量纹理法(texture of polarization parameters,TPP)得到 纹理参数SD(ZH)、SD(ZDR)、SD (KDP)、SD(ρHV),分析它们在垂直高度上的相对分 布识别零度层亮带,并与平均反射率因子垂直廓线识别法(MVPR)进行比较,说明运用双偏振参 数纹理法能够更好地识别零度层亮带以及分析研究偏振特征。
Abstract:
Stratiform rain situations are generally associated with the presence of a melting layer. This layer is an important feature as it has an influence on quantity precipitation estimation. How to reduce this effect is a scientific issue of great concern to radar meteorological observation. Dual-polarization radar can provide dual polarization parameter information, which has advantages in cloud precipitation particle phase identification and particle size distribution. In this paper, firstly, use median filtering to suppress the fluctuation of measured differential propagation phase. The attenuated reflectivity factor ZH and differential reflectivity ZDR can be corrected by using observable KDP.A new way to identify the melting layer on RHI scans using texture of polarization parameters(SD(ZH), SD (ZDR), SD(KDP), SD(ρHV)) is proposed and compare it with the mean vertical profile of reflectivity method(MVPR). The result shows that using texture of polarization parameters can identify the melting layer and analyze the polarization characteristics.

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备注/Memo

收稿日期:2019-04-06 基金项目:国家重点研发计划资助项目(2016YFE0201900-02); 国家自然科学基金资助项目 (41575037); 国家重点基础研究发展计划(973)资助项目(2014CB441403)

更新日期/Last Update: 2019-10-20