doi:  10.3878/j.issn.1006-9895.1805.17233
闪电定位和雷达观测资料在云分析中的应用及数值试验

Application of Lightning location and Radar Data in Cloud Analysis System and Its Numerical Experiments
摘要点击 428  全文点击 116  投稿时间:2017-09-12  修订日期:2018-04-10
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基金:  国家自然科学基金,公益性行业(气象)科研专项
中文关键词:  云分析 雷达反射率 闪电定位
英文关键词:  cloud analysis, radar reflectivity, lightning location
     
作者中文名作者英文名单位
孙婵SUN Chan中国气象科学研究院
徐国强Xu Guoqiang国家气象中心/数值预报中心
引用:孙婵,徐国强.2018.闪电定位和雷达观测资料在云分析中的应用及数值试验[J].大气科学
Citation:SUN Chan,Xu Guoqiang.2018.Application of Lightning location and Radar Data in Cloud Analysis System and Its Numerical Experiments[J].Chinese Journal of Atmospheric Sciences (in Chinese)
中文摘要:
      本文针对2016年6月山西、山东地区一次强对流活动,通过GRAPES云分析系统融合了多普勒雷达反射率三维组网拼图资料和ADTD闪电定位资料,对模式初始场的云水、云冰等云微物理变量进行了调整和分析,并对这次强对流过程设计了3组数值试验。结果表明:(1)云分析系统在加入雷达反射率资料以后,能在模式初始场中较准确的计算模式的初始水物质;(2)而闪电定位资料转换成的代理雷达反射率对原有的雷达反射率有一定的补充作用,使模式的初始场与真实状况更接近;(3)从模式降水的角度看,在加入雷达资料以后,GRPAPS云分析可以显著提高6小时以内降水的模拟效果,而闪电定位资料的加入,对中雨以上量级的降水模拟有进一步的改进作用。
Abstract:
      In this study, we analyze a strong convection activity happened in Shanxi and Shandong province in 2016 June. Combined with Doppler weather radar three-dimensional mosaic reflectivity data and ADTD Lightning Location Data, the cloud microphysical variables (such as cloud water, cloud ice, etc.) in the initial field can be adjusted and analyzed by Cloud analysis system in GRAPES. Based on this strong convection activity, three groups of test are designed. The results indicate: (1) The cloud analysis system in GRAPES can analyze cloud microphysical variables more exactly in the initial field when the radar reflectivity data is used. (2)the lightning location data can complement radar reflectivity data well. It makes the initial field closer to the real state of atmosphere. (3) From the perspective of precipitation, the simulation effect of precipitation within 6 hours is improved when the radar reflectivity data is applied. When it comes to the moderate rain and the rain heavier than moderate rain, the lightning data can improve more.
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