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投稿时间:2008-01-16 修订日期:2008-03-13
投稿时间:2008-01-16 修订日期:2008-03-13
中文摘要: 利用CAPS(Center for Analysis and Prediction of Storm)研发的ARPS(The Advanced Reg
ional Prediction System)模式及数据处理系统ADAS(ARPS Data Analysis System)和3DVar
(3-D Variation)系统分别同化多普勒雷达反射率与径向风资料,分析二者在改进模式初始
场和预报效果中的作用。通过模拟2003年7月安徽省一次强降水过程,得到如下结论:径向
[HJ]风资料调整初始风场,在积分进行后,对水汽场也有所调整;反射率资料调整初始水汽
场,积分开始后,对风场也有调整,其中后者较显著。从预报的3小时降水来看,两个同化试验
得到的落区位置与实况都有出入,反射率同化试验得到的预报面积比实况偏大,但二者都比
非同化试验效果好。
Abstract:Herein Doppler radar reflectivity and radial velocity data assimilation experime
nts are carried by means of ARPS ADAS (ARPS Data Analysis System) and 3Dvar (3
D Variation System) respectively. Roles played by ADAS and 3Dvar in improving in
itial fields and forecast results are analyzed. Through investi
gating one rainstorm process occurred in Anhui Province, July 2003, it indicates
that radial velocity data affects initial wind field, along with integral begin
ning, water vapor field is adjusted too. Reflectivity data impacts initial water
vapor field, and after integration, the wind field is improved. The effect of r
eflectivity is more evident than that of radial velocity. Moreover, for the 3h r
ainfall simulation, reflectivity and radial velocity assimilation experiments ar
e both different with observations in situ, the former one is greater than the o
bservation. While the both results of assimilation experiments are better than t
hose of the non assimilation ones.
keywords: reflectivity radial velocity assimilation
文章编号: 中图分类号: 文献标志码:
基金项目:本文得到江苏省气象灾害重点实验室(南京信息工程大学)项目(KLME050101)和国家自然
科学基金面上项目(40375006)资助。
作者 | 单位 |
杨艳蓉 | 江苏省气象灾害重点实验室,南京 210044;南京信息工程大学遥感学院 |
王振会 | 江苏省气象灾害重点实验室,南京 210044;南京信息工程大学遥感学院 |
杨洪平 | 中国气象科学研究院 |
张沛源 | 中国气象科学研究院 |
李柏 | 中国气象局大气探测技术中心 |
引用文本:
杨艳蓉,王振会,杨洪平,张沛源,李柏,2008.多普勒雷达反射率与径向风资料在数值模式中的应用试验[J].气象,34(6):26-34.
Yang Yanrong,Wang Zhenhui,Yang Hongping,Zhang Peiyuan,Li Bai,2008.Doppler Radar Reflectivity and Radial Velocity Data Assimilation in Numerical Model[J].Meteor Mon,34(6):26-34.
杨艳蓉,王振会,杨洪平,张沛源,李柏,2008.多普勒雷达反射率与径向风资料在数值模式中的应用试验[J].气象,34(6):26-34.
Yang Yanrong,Wang Zhenhui,Yang Hongping,Zhang Peiyuan,Li Bai,2008.Doppler Radar Reflectivity and Radial Velocity Data Assimilation in Numerical Model[J].Meteor Mon,34(6):26-34.