主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2017, Vol. 33 ›› Issue (5): 91-96.doi: 10.3969/j.issn.1673-503X.2017.05.012

• 简报 • 上一篇    下一篇

雨滴谱仪和天气雷达观测的反射率因子对比分析

李洋1, 张晋广1, 袁健1, 房彬1, 陈宇2, 单楠1, 翟晴飞1, 朱轶明1, 万绪江1, 崔远鸿3   

  1. 1. 辽宁省人工影响天气办公室, 辽宁 沈阳 110166;
    2. 辽宁省气象灾害监测预警中心, 辽宁 沈阳 110166;
    3. 辽宁省科技创新体系建设服务中心, 辽宁 沈阳 110004
  • 收稿日期:2017-03-17 修回日期:2017-05-20 出版日期:2017-10-30 发布日期:2017-10-30
  • 通讯作者: 袁健,E-mail:yj1962@126.com。 E-mail:yj1962@126.com
  • 作者简介:李洋,男,1982年生,工程师,主要从事新一代天气雷达观测研究,E-mail:liyang024@163.com。
  • 基金资助:
    “十二五”辽宁省重点科技攻关项目“辽宁暖云人工增雨催化技术研究”(2011210001)资助。

Comparative analysis of reflectivity factors measured with raindrop spectrometer and weather radar

LI Yang1, ZHANG Jin-guang1, YUAN Jian1, FANG Bin1, CHEN Yu2, SHAN Nan1, ZHAI Qing-fei1, ZHU Yi-ming1, WAN Xu-jiang1, CUI Yuan-hong3   

  1. 1. Weather Modification Office in Liaoning Province, Shenyang 110166, China;
    2. Liaoning Meteorological Disaster Monitoring and Warning Center, Shenyang 110166, China;
    3. Liaoning Science and Technology Innovation System Construction Service Center, Shenyang 110004, China
  • Received:2017-03-17 Revised:2017-05-20 Online:2017-10-30 Published:2017-10-30

摘要: 利用Parsivel雨滴谱仪和新一代天气雷达对2012年沈阳地区一次短时暴雨过程进行了对比观测,对雨滴谱仪观测资料计算的反射率因子ZP进行分档统计,并与雷达RHI扫描资料计算的反射率因子Z进行对比分析。结果表明:对于2012年沈阳地区此次暴雨过程,雷达观测的回波强度存在低估现象,雨滴谱仪计算的各档反射率因子ZP均大于雷达观测的反射率因子Z;应用雷达单点和3点平均值进行统计,雷达观测的反射率因子分别平均偏低约8.30 dBz和8.64 dBz;观测仪器取样范围、资料时空匹配及谱宽变化是造成雨滴谱仪和天气雷达观测的反射率因子不一致的主要原因。

关键词: 雨滴谱仪, 天气雷达, 反射率因子, 暴雨

Abstract: A comparison observation between the Parsivel raindrop spectrometer and the new generation weather radar on a rainstorm occurring in Shenyang area in 2012 was conducted and the counted classifiable reflectivity factor ZP calculated with the raindrop spectrometer data was compared with the reflectivity factor Z calculated with the radar Range-Height Indicator data.The results show that for the rainstorm,the echo intensity of radar is underestimated and the reflectivity factor ZP is greater than Z.Based on the statistics of radar data at a single point and its 3-point average,the reflectivity factor Z is on average about 8.30 dBz and 8.64 dBz lower than the normal value respectively.The sampling range of observation instrument,temporal-spatial matching of data and the change of spectral width are the main reasons for causing the inconsistency between two kinds of reflectivity factors observed with the two devices.

Key words: Raindrop spectrum, Weather radar, Reflectivity factor, Rainstorm

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