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| 两次台风过程近地层湍流度和阵风因子分析 | |
| 引用本文： | 黄世成,周嘉陵,王咏青,刘建波,张 杰.两次台风过程近地层湍流度和阵风因子分析[J].气象科学,2009,29(4):454-460. |
| 作者姓名： | 黄世成 周嘉陵 王咏青 刘建波 张 杰 |
| 作者单位： | 1. 江苏省气象科学研究所,南京,210008 2. 江苏省气象台,南京,210008 3. 南京信息工程大学,大气科学学院,南京,210044 4. 山东省青岛市气象局,青岛,266003 |
| 基金项目： | 江苏省科技厅社会发展项目，"青岛海湾大桥工程气象专题" |
| 摘 要： | 利用2005年台风"麦莎"和"卡努"期间青岛海岸实测三维风观测资料,挑选6个10 min平均风速≥8 m/s的强风时段,使用矢量分析方法研究台风影响华东地区时近地层的平均风速风向变化、湍流度和阵风因子变化等湍流特性,结果表明台风影响期间,近地层湍流脉动风速不稳定,水平方向、垂直方向风速风向快速变化;虽然台风"麦莎"、"卡努"入海地点不同,不同强风时段近地层湍流度差异也较大,但湍流强度都表现为Iu(横向)＞Iv(纵向)＞Iw(垂直向).两次台风影响过程不同强风时段近地层阵风因子的变化与湍流度的变化是一致的,在风速增大风向转变的时段,湍流度和阵风因子明显增大. |
| 关 键 词： | 近地层 湍流度 阵风因子 |
| 收稿时间： | 2008/1/24 0:00:00 |
Analysis on turbulence and wind gust factor in surface layer during two typhoon processes |
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| Huang Shicheng,Zhou Jialing,Wang Yongqing,Liu Jianbo,Zhang Jie.Analysis on turbulence and wind gust factor in surface layer during two typhoon processes[J].Scientia Meteorologica Sinica,2009,29(4):454-460. | |
| Authors: | Huang Shicheng Zhou Jialing Wang Yongqing Liu Jianbo Zhang Jie |
| Institution: | 1 Jiangsu Institute of Meteorological Sciences;Nanjing 210008;China;2 Jiangsu Metrological Observatory;China;3 School of Atmospheric Sciences;Nanjing University of Information Science & Technology;Nanjing 210044;China;4 Qingdao Meteorological Bureau;Shandong Qingdao 266003;China |
| Abstract: | Among the 3D wind data measured during periods of typhoon "Matsa" and "Khanun" in Qingdao coast,six strong wind periods in which average wind speed per 10 min.exceeding 8 m/s during the two typhoons are selected.By the vector analysis method,the turbulence characteristics,such as average wind velocity and direction change,turbulence and wind gust factors in surface layer in East China during the typhoon influence are analyzed.The results show that during the affected typhoon,the turbulent fluctuation is ins... |
| Keywords: | Surface layer Typhoon Turbulence Gust factor |
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