Assimilation of GMS-5 satellite winds using nudging method with MM5

GAO Shanhong; WU Zengmao; YANG Bo

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Assimilation of GMS-5 satellite winds using nudging method with MM5

机译：使用MM5推挤法吸收GMS-5卫星风

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With the aid of Meteorological Information Composite and Processing System (MICAPS), satellite wind vectors derived from the Geostationary Meteorological Statellite-5 (GMS-5) and retrieved by National Satellite Meteorology Center of China (NSMC) can be obtained. Based on the nudging method built in the fifth-generation Mesoscale Model (MM5) of Pennsylvania State University and National Center for Atmospheric Research, a data preprocessor is developed to convert these satellite wind vectors to those with specified format required in MM5. To examine the data preprocessor and evaluate the impact of satellite winds from GMS-5 on MM5 simulations, a series of numerical experimental forecasts consisting of four typhoon cases in 2002 are designed and implemented. The results show that the preprocessor can process satellite winds smoothly and MM5 model runs successfully with a little extra computational load during ingesting these winds, and that assimilation of satellite winds by MM5 nudging method can obviously improve typhoon track forecast but contributes a little to typhoon intensity forecast. The impact of the satellite winds depends heavily upon whether the typhoon bogussing scheme in MM5 was turned on or not. The data preprocessor developed in this paper not only can treat GMS-5 satellite winds but also has capability with little modification to process derived winds from other geostationary satellites.

机译：借助气象信息合成与处理系统（MICAPS），可以获得从地球静止气象卫星5（GMS-5）导出并由中国国家卫星气象中心（NSMC）检索的卫星风向矢量。基于宾夕法尼亚州立大学和国家大气研究中心的第五代中尺度模型（MM5）中内置的微调方法，开发了一种数据预处理器，可将这些卫星风矢量转换为MM5中要求的具有指定格式的矢量。为了检查数据预处理器并评估GMS-5卫星风对MM5模拟的影响，设计并实施了一系列数值实验预报，包括2002年的四个台风案例。结果表明，预处理器可以平稳处理卫星风，并且在吸收这些风时，只需稍加额外的计算负荷就可以成功运行MM5模型，并且采用MM5微距方法对卫星风进行同化可以明显改善台风径迹预报，但对台风强度的影响不大。预测。卫星风的影响在很大程度上取决于MM5中的台风防伪方案是否打开。本文开发的数据预处理器不仅可以处理GMS-5卫星风，而且具有很少的处理能力，可以处理其他对地静止卫星的风。

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来源
《中国海洋湖沼学报（英文版）》 |2006年第3期|215-224|共10页
作者
GAO Shanhong; WU Zengmao; YANG Bo;
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作者单位

Physical Oceanography Laboratory,Ocean University of China,Qingdao 266003,China;

Physical Oceanography Laboratory,Ocean University of China,Qingdao 266003,China;

Physical Oceanography Laboratory,Ocean University of China,Qingdao 266003,China;

Beijing Meteorological observatory,Beijing 100089,China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类海洋学;
关键词
satellite winds; assimilation; nudging method; MM5;

机译：卫星风;同化;疏导方法;MM5;

Assimilation of GMS-5 satellite winds using nudging method with MM5

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