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| 不同云降水方案对一次登陆台风的降水模拟 | |
| 引用本文： | 徐国强,梁旭东,余晖,黄丽萍,薛纪善.不同云降水方案对一次登陆台风的降水模拟[J].高原气象,2007,26(5):891-900. |
| 作者姓名： | 徐国强 梁旭东 余晖 黄丽萍 薛纪善 |
| 作者单位： | 1. 中国气象局,中国气象科学研究院灾害天气国家重点实验室,北京,100081;上海台风研究所,上海,200030 2. 上海台风研究所,上海,200030 3. 中国气象局,中国气象科学研究院灾害天气国家重点实验室,北京,100081 |
| 基金项目： | 上海台风研究基金，国家自然科学基金项目(40575050,40233036)，国家基础研究项目(2004CB418306)共同资助 |
| 摘 要： | 利用美国最新发展的新一代中尺度数值预报模式(WRF),研究了不同云降水方案对一次登陆台风的降水模拟问题,结果表明,在网格距适当小的情况下,同时采用积云对流参数化方案和云微物理方案(Kessler方案)时,其降水预报优于只使用积云对流参数化方案时的预报;在台风降水模拟的初期,Kain-Fritsch方案比Betts-Miller方案产生降水更快,更接近实况降水;在台风登陆后随时间的延长,对流降水重要性逐步下降,网格尺度降水逐渐增强。 |
| 关 键 词： | Betts-Miller积云方案 Kain-Fritsch积云方案 Kessler方案 登陆台风 降水模拟 |
| 文章编号： | 1000-0534（2007）05-0891-10 |
| 修稿时间： | 2006-01-08 |
Precipitation Simulation Using Different Cloud-Precipitation Schemes for a Landfall Typhoon |
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| XU Guo-qiang,LIANG Xu-dong,YU Hui,HUANG Li-ping,XUE Ji-shan.Precipitation Simulation Using Different Cloud-Precipitation Schemes for a Landfall Typhoon[J].Plateau Meteorology,2007,26(5):891-900. | |
| Authors: | XU Guo-qiang LIANG Xu-dong YU Hui HUANG Li-ping XUE Ji-shan |
| Institution: | 1.State Key Laboratory of Severe Weather;Chinese Academy of Meteorological Sciences;China Meteorological Administration;Beijing 100081;China;2.Shanghai Typhoon Institute;China Meteorological Administration;Shanghai 200030;China |
| Abstract: | The typhoon Sinlaku which was the strongest and landfall one in China in 2002 is simulated with WRF model which is the new generation mesoscale model developing in United States.Input data of model are taking from the T213L31 presented by National Meteorological Center,the initial time of model integrating is at 08:00(Beijing time) on September 7,2002.Four numerical tests are designed with the differences of precipitation schemes and then cloud-precipitation schemes are examined through precipitation simulation of the typhoon.Sesults show that the application of convective scheme together with microphysic scheme (Kessler scheme) are better than only using convective scheme as grid length is small properly.The convective precipitation produced by Kain-Fritsch scheme is rapider than by Betts-Miller scheme in the initial steps of model integration and that is closer the observation.Along with the typhoon landing time extended,sub-grid scale convective precipitation is diminishing and grid scale precipitation is gradually increase.The reason may be that exchange and mixing of high level air and low level is more sufficient which result in convective instability weak.However,it is to be indicated that the results of the paper are just from a case of typhoon simulation with WRF model.The conclusions need validation with more cases. |
| Keywords: | Kain-Fritsch scheme Betts-Miller scheme Kessler scheme Landfall typhoon Precipitation simulation |
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