雷达TREC风的三维变分同化应用与试验
THE TEST OF APPLYING RADAR TREC WIND IN THREE- DIMENSIONAL VARIATIONAL ASSIMILATION
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摘要: 介绍了雷达TREC风场在中国气象科学研究院开发的三维变分同化系统GRAPeS-3DVar中的应用,研究了GRAPeS-3DVar系统同化雷达TREC风场资料的一些基本特性,发现雷达TREC风场在GRAPeS-3DVar中有较好的应用价值,能有效地提高分析产品的质量,并通过一个热带气旋登陆变性过程的数值试验,说明了在GRAPeS-3DVar中加入雷达TREC风场也能改善预报效果。Abstract: The radar TREC wind(tracking radar echoes by correlation) was applied in three-dimensional variational assimilation system(GRAPeS-3DVar) developing by the Chinese Academy of Meteorological Sciences.Some numerical tests were performed to study the characteristics of assimilating radar TREC wind in GRAPeS-3DVar system.The result shows that the radar TREC wind was available to improve the analysis quantity in the GRAPeS-3Dvar.Also,the further test of simulating a tropical cyclone landfall process shows that the forecast was improved by assimilating the radar TREC the wind in the GRAPeS-3DVar.
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