王超,万丰,张凤英,王宗皓. 1997. 数值预报/卫星反演/数据同化循环试验[J]. 气象学报, 55(6):740-749, doi:10.11676/qxxb1997.071
数值预报/卫星反演/数据同化循环试验
AN EXPERIMENT ON NWP/SATELLITE RETRIEVAL/DATA ASSIMILATION
投稿时间:1996-06-27  修订日期:1997-05-02
DOI:10.11676/qxxb1997.071
中文关键词:  卫星反演  水汽产品  数据同化  台风  暴雨  预报
英文关键词:Satellite retrieval  Water vapour product  Data assimilation  Typhoon  Rainstorm  Forecast
基金项目:国家《八五》课题85-906-03-03
作者单位
王超 国家卫星气象中心, 北京, 100081 
万丰 国家气象中心, 北京, 100081 
张凤英 国家卫星气象中心, 北京, 100081 
王宗皓 国家卫星气象中心, 北京, 100081 
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中文摘要:
      文中介绍了数值预报/卫星反演/数据同化的循环试验。由于湿度反演方法的改进,使得湿度反演产品的精度有所提高,所以首先进行了湿度廓线参与同化过程的试验。结果表明,反演的水汽产品对台风中心强度有正影响,经过4次同化过程24h预报模拟的台风加深与实况比较一致。48h预报台风中心减弱趋势在低层显得不足,但比业务预报有明显改进。24与48h预报的总降水量和暴雨中心强度比未加入反演水汽产品的预报有明显增加,且接近实况。
英文摘要:
      An experiment on NWP/Satellite retrieval/Data assimilation was described in the paper.Since the method of water vapor retrieval was improved and the accuracy of retrieval relative humidity (RH) has been increased,the retrieval RH wasonly used in assimilation.The result show safter 4-step 6h assimilation the typho on intensity modelled was more consistent with that of the real one than withoutret rieval R H.Although the trend of decreasing of the typhoon intensity for ecasted for 48h ahead is weaker on the low levels,it is better than the modelling withoutret rieval RH.It is evident that the retrieval RH had positive impact on the analysis and forecast of typho on intensity.The forecast both 24 and 48 hahead of total precipitation and the rainst or mintensity in the centre of rain areas were increasing and close to the real ones when the retrieval R H was used.
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