风云2号卫星红外资料在暴雨数值预报中的应用研究
THE APPLICATION OF HOMEMADE FENGYUN-2 SATELLITE INFRARED DATA FOR TORRENTIAL RAIN NUMERICAL PREDICTION
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摘要: 选取1个暴雨实例,利用统计方法对同期风云2号卫星红外云图资料进行温、湿度反演,通过像素点灰度筛选、灰度反演值订正方法对反演场实施质量控制,并将温、湿度反演场与温、湿度常规分析场实行变分同化。最后为研究反演资料在降水预报中的作用,设计3种引入反演资料的方案与MM5常规方案进行比较,并用TS评分客观评价了上述方案的预报效果。Abstract: In one rainstorm process we firstly statistically retrieved temperature and humidity of the atmosphere from the FENGYUN-2 Infrared cloud image data,then carried out quality control by means of pixel filter and retrieval correct,and implemented the variational assimilation between retrieval fields and analysis fields by means of SOR method.At last,in order to find out the action of the retrieval data for heavy rainfall forecast,we designed four kinds of schemes to perform the comparative experiments in MM5 model,and introduced Threat score to evaluate the rainfall forecast results of the different schemes.
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Key words:
- FENGYUN-2 /
- variational assimilation /
- numerical forecast /
- comparative experiment /
- threat score rainy
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[1] 江敦春,党人庆,陈联寿.卫星资料在台风暴雨数值模拟中的应用[J].热带气象学报,1994,10(4):318-324. [2] 沈桐立,闵锦忠,吴诚鸥,等.有限区域卫星云图资料变分分析的试验研究[J].高原气象,1996,15(1):58-67. [3] 闵锦忠,沈桐立,陈海山,等.卫星云图资料反演的质量控制及变分同化数值试验[J].应用气象学报,2000,11(4):410-418. [4] 朱民,郁凡,郑维忠,等.卫星反演湿度场及其在暴雨预报中的初步应用分析[J].气象学报,2000,58(4):470-478. [5] 黎光清,张文建,董超华,等.东亚地区气象参数卫星遥感反演理论和方法研究Ⅰ--ISPRM和SPRM[J].气象学报,1999,57(5):594-603.
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