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| 一次暴雪过程前后近地层物理量场特征分析 | |
| 引用本文： | 王林,覃军,陈正洪.一次暴雪过程前后近地层物理量场特征分析[J].南京气象学院学报,2011,34(3):305-311. |
| 作者姓名： | 王林 覃军 陈正洪 |
| 作者单位： | 1. 中国地质大学，大气物理与大气环境研究所，湖北武汉，430074 2. 中国地质大学，大气物理与大气环境研究所，湖北武汉，430074；中国气象局，气候研究开放实验室，北京，100081 3. 武汉区域气候中心，湖北武汉，430074 |
| 基金项目： | 国家科技支撑计划项目(2008BAC48B02); 中国气象局气候研究开放实验室(LCS)开放课题(LCS-2006-08); 国家重点工程“湖北鄂东长江公路”气象观测论证与保障服务项目(KY200601) |
| 摘 要： | 利用铁塔风梯度观测资料和超声风温仪观测资料,对2008年1月18—21日暴雪前后,湖北黄石长江岸边近地层风场和湍流作了计算分析,探索其异常变化特征,为认识黄石地区暴雪近地层发生发展的物理过程提供依据。结果表明,暴雪前,风向转变,水平风速和垂直风速明显增大,湍流通量的输送较活跃,湍流动能和湍流强度有显著峰值出现;降雪过程结束后,湍流动能再次增大后缓慢减弱。可见此次暴雪过程前后近地层物理量场有异常变化 |
| 关 键 词： | 暴雪 近地层 物理要素 湍流 |
A case study on the characteristics of the physical quantity fields on the near-surface layer during a snowstorm process |
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| WANG Lin,QIN Jun,CHEN Zheng-hong.A case study on the characteristics of the physical quantity fields on the near-surface layer during a snowstorm process[J].Journal of Nanjing Institute of Meteorology,2011,34(3):305-311. | |
| Authors: | WANG Lin QIN Jun CHEN Zheng-hong |
| Institution: | WANG Lin~1,QIN Jun~1,2,CHEN Zheng-hong~3(1.Institute of Atmospheric Physics and Enviroment,China University of Geoscience,Wuhan 430074,China,2.Laboratory of Climate Study,China Meteorological Administration,Beijing 100081,3.Hubei Meteorological Bureau,China) |
| Abstract: | Base on the observational data obtained from tower in Huangshi area along the Yangtze River,a detailed study on an ice storm process on 18—21 January 2008 is made in this paper.The unusual characteristics can provide the basis to understand the Huangshi area snowstorm’s surface layer physical process.The results show that：before the precipitation,the wind direction changed,the horizontal and vertical wind speed increase obviously,the turbulent flux become active,the turbulent kinetic energy and the turbulence intensity presented obvious peak values;after the precipitation,the turbulent kinetic energy reached to another peak value and then weakened slowly.Thus,obvious changes of the physical quantity field occurred before and after the snowstorm |
| Keywords: | snowstorm near-surface layer physical essential factor turbulence |
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