Observation and Numerical Experiments for Drag Coefficient Under Typhoon Wind Forcing
文献类型：CNKI期刊论文
| 作者 | CAO Huiqiu; ZHOU Liangming; LI Shuiqing; WANG Zhifeng |
| 发表日期 | 2017-02-06 |
| 出处 | Journal of Ocean University of China
 |
| 关键词 | drag coefficient SWAN high wind speed typhoon |
| 英文摘要 | This paper presents a study on drag coefficients under typhoon wind forcing based on observations and numerical experiments. The friction velocity and wind speed are measured at a marine observation platform in the South China Sea. Three typhoons: SOULIK(2013), TRAMI(2013) and FITOW(2013) are observed at a buoy station in the northeast sea area of Pingtan Island. A new parameterization is formulated for the wind drag coefficient as a function of wind speed. It is found that the drag coefficient(Cd) increases linearly with the slope of 0.083′10~(-3) for wind speed less than 24 m s~(-1). To investigate the drag coefficient under higher wind conditions, three numerical experiments are implemented for these three typhoons using SWAN wave model. The wind input data are objective reanalysis datasets, which are assimilated with many sources and provided every six hours with the resolution of 0.125?×0.125?. The numerical simulation results show a good agreement with wave observation data under typhoon wind forcing. The results indicate that the drag coefficient levels off with the linear slope of 0.012′10~(-3) for higher wind speeds(less than 34 m s~(-1)) and the new parameterization improvese the simulation accuracy compared with the Wu(1982) default used in SWAN. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the National Natural Science Foundation of China (Nos. 41276015, 51509226) ; the Fundamental Research Funds for the Central Universities (No. 201513040) ; Open Science Foundation of Key Laboratory of Digital Ocean, SOA (No. KLD0201404) |
| 卷 | v.16期:01页:39-45 |
| 语种 | 英文; |
| 分类号 | P714.2 |
| ISSN号 | 1672-5182 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189412]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CollegeofOceanicandAtmosphericSciences,OceanUniversityofChina 2.InstituteofOceanology,ChineseAcademyofSciences 3.CollegeofEngineering,OceanUniversityofChina |
| 推荐引用方式 GB/T 7714 | CAO Huiqiu,ZHOU Liangming,LI Shuiqing,et al. Observation and Numerical Experiments for Drag Coefficient Under Typhoon Wind Forcing. 2017. |
入库方式： OAI收割
来源：海洋研究所
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