台风模拟中QuikSCAT风场的非对称加强订正及同化应用

王亮; 陆汉城; 潘晓滨; 张云

台风模拟中QuikSCAT风场的非对称加强订正及同化应用

解放军理工大学气象学院, 江苏, 南京, 211101

基金项目: 国家自然科学基金资助项目(编号40575022);国家重点基础研究专项经费(编号2004CB418301)共同资助

计量
- 文章访问数: 947
- HTML全文浏览量: 1
- PDF下载量: 1371
- 被引次数: 0
出版历程
- 收稿日期: 2007-07-06
- 修回日期: 2007-11-08

CORRECTION OF ASYMMETRIC STRENGTHENING OF QUIKSCAT WIND FIELD AND ASSIMILATION APPLICATION IN TYPHOON SIMULATION

Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China

摘要

摘要: 针对QuikSCAT散射计风场资料对台风级别的强风速区还无法准确刻画这个技术问题,引入台风移速、移向、摩擦等客观因素对该风场产品资料进行非对称加强订正;然后利用四维同化技术,并设计了先同化后预报两个阶段的试验方案,对"云娜"台风进行了数值模拟试验。试验结果表明:通过模式约束调整,四维同化技术可以把QuikSCAT海面风场资料引入到整层模式大气中,并对整层风场和气压场的强度及路径模拟都有很大的改进,而且该资料还提高了预报阶段台风强度的模拟效果,并对登陆点的预报起到了积极作用。
- QuikSCAT风场 /
- 非对称风场订正加强 /
- 四维同化 /
- 数值模拟
Abstract: Aiming at a technological problem that the wind data of QuikSCAT scatterometer cannot accurately describe the zone of typhoon-level strong wind speed,this paper introduces some objective factors such as the typhoon moving speed,direction and friction when constructing the asymmetric strengthening of the QuikSCAT wind field.Then by adopting four-dimensional data assimilation technology,the experiment including assimilation and forecasting phases is designed to simulate Typhoon Rananim numerically.The results show that,by using the four-dimensional data assimilation technology,QuikSCAT wind data which can be introduced to the whole-column model atmosphere and with constraints and adjustment of the model,improves greatly the simulating effects of the whole-column wind,pressure field and the track,in addition to the simulated typhoon intensity during forecast and works positively for the forecasting of landfall sites.
- QuikSCAT wind field /
- asymmetric strengthening correct /
- four-dimensional data assimilation /
- numerical simulation

HTML全文

参考文献(17)

[1]	刘春霞,何溪澄.QuikSCAT散射计矢量风统计特征及南海大风遥感分析[J].热带气象学报,2003,19(增刊):107-117.
[2]	HOFFMAN R N.A preliminary study of the impact of the ERS1 C-band scatterometer wind data on the ECWMF global data assimilation system[J].J Geophys Res,1993,98:10 233-10 244.
[3]	HSU C S,LIU W T.Wind and pressure fields near tropical cyclone Oliver derived from scatterometer observations[J].J Geophys Res,1996,101:17 021-17 027.
[4]	SCHMULLIUS C C.Monitoring Siberian forecast and agriculture with the ERS-1 wind scatterometer[J].IEEE Trans Geosci Remote Sens,1997,35:1 364-1 366.
[5]	ISAKSEN L,STOFFELEN A.ERS scatterometer wind data impact on ECWMF's tropical cyclone forecasts[J].IEEE Trans Geosci Sens,2000,38:1 885-1 892.
[6]	刘春霞,王静,齐义泉,等.基于WRF 模式同化QuikSCAT风场资料的初步试验[J].热带海洋学报,2004,23(6):69-74.
[7]	CARSWELL J R,A.CASTELLS.Observed saturation in C-and Ku-band ocean backscatter at hurricane force winds[J].J Geophys Res,1999,104(C5):11 485-11 497.
[8]	BOURASSA M A,LEGLER D M,O'BRIEN J J,ct al.SeaWinds validation with research vessels[J].J Geophys Res,2003,108(C2):3019.
[9]	LOW-NAM S,DAVIS C.Development of Tropical Cyclone Bogussing Scheme for the MM5 System[J].Preprints of the Eleventh PSU/NCAR Mesoscale Model Users Workshop.Jun 25-27,2001.Boulder,Colorado.130-134.
[10]	雷小途,陈联寿.热带气旋与中纬度环流系统相互作用的研究进展[J].热带气象学报,2001,17(4):452-461.
[11]	胡邦辉,谭言科.海面热带气旋域内风速分布[J].大气科学,1992,23(3):316-322.
[12]	黄小刚,费建芳,张根生,等.一种台风海面非对称风场的构造方法[J].热带气象学报,2004,20(2):129-136.
[13]	钮学新.热带气旋动力学[M].北京:气象出版社,1992:12-14.
[14]	福地章.海洋气象讲座[M].东京:株式会社成山书堂,1975:44.
[15]	陈联寿,丁一汇.西太平洋台风概论[M].北京:科学出版社,1979:485-488.
[16]	BARNES S.A technique for maximizing details in numerical map analysis[J].J App Meteorol,1964,3:395-409.
[17]	孟智勇,徐祥德,陈联寿.卫星亮温资料四维同化方案及其对"7.20"武汉特大暴雨的模拟试验[J].大气科学,2002,26(5):663-676.