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全球区域同化预报系统的使用及其数值模拟
引用本文:陈建萍.全球区域同化预报系统的使用及其数值模拟[J].气象与减灾研究,2005,28(2):23-26.
作者姓名:陈建萍
作者单位:江西省环境预报中心,江西,南昌,330046
基金项目:本文受江西省科技计划项目“江西突发性强风暴天气监测和预警研究”、江西省气象局“省级中尺度灾害性天气数值预报系统业务化应用研究”项目共同资助.
摘    要:介绍了中国气象科学研究院数值预报中心自主开发的GRAPESV2.1数值模式运行步骤,并利用该模式对2005年5月1日06~07时在江西南昌市区出现的30mm/h强降水过程,进行了数值模拟和诊断分析。结果发现,北方干冷空气南下,到达30°N附近后,与南方暖湿空气在南昌市区上空低层形成交汇,促使暖湿空气沿着锋面迅速抬升凝结,触发不稳定能量的释放,是造成南昌强降水产生的主要原因;GRAPES模式能很好地模拟出高低空环流形势场特征和主要天气系统,能提供较准确的高分辨率诊断分析资料。

关 键 词:GRAPES模式  强降水  数值模拟  诊断分析
文章编号:1007-9033(2005)02-00023-04
收稿时间:2005-05-12
修稿时间:2005年5月12日

Application And Numeric Simulation Of Global Regional Assimilation Prediction System (GRAPES)
CHEN Jian-ping.Application And Numeric Simulation Of Global Regional Assimilation Prediction System (GRAPES)[J].Meteorology and Disaster Reduction Research,2005,28(2):23-26.
Authors:CHEN Jian-ping
Abstract:The running steps about GRAPESV2.1 developed by the Chinese academy of meteorological sciences are presented, and numeric simulation and diagnostic an alysis for a heavy precipitation process 30mm per hour from 06 to 07 on May 21, 2005 in Nanchang in Jiangxi is implemented. The result shows as follows: the dry and cold air come from north, and converged with warm and wet air from south in the low level of upper air in Nanchang city, and urged the warm and wet air ris ing and coagulating quickly, and resulted in the release of unstable energy, it was the primary reason for the heave rainfall in Nanchang city. The simulation t hat GRAPES mode can be very good produces the height circulation situation chara cteristic once and main weather system, can offer more accurate high-resolution to diagnose that analyse the materials.
Keywords:GRAPES model Heavy rainfall Numerical simulation Diagnostic analysis
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