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三维超声风速仪观测中风向角计算方法

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在对三维超声风速仪观测资料处理中,风向角的计算具有一定的技巧性.根据三维超声风速仪自身观测坐标系统与地理坐标系之间的差异,推导出计算地理坐标系下风向角的一种方法,为超声风观测资料的处理和应用提供借鉴.同时利用锡林浩特国家气候观象台2008年全年通量观测资料对风向角进行了计算,并与台站统计资料进行了对比,结果表明两组数据无论从风向角分布趋势还是从相关性来看,均非常吻合(相关系数为0.97),从而证明了该方法的正确性及可应用性.
Method for Calculating Wind Direction in Measurement Using 3D Sonic Anemometer
While processing the data obtained by three dimensional sonic anemometers, it is skillful to calculate the wind direction. Based on the difference between the coordinate system of an instrument and the geographic coordinate system, a method for calculating wind direction is presented. The data collected from the Xinlinhot flux tower is used to validate the method. Comparing the wind direction calculated by the method with that from observed, the distributions of the two data sets match well and there is a high correlation between them with the correlation coefficient being 0. 97. It is suggested that the method can be used for reference in processing and applying the data measured by sonic anemometers.

three dimensional sonic anemometerwind directioncalculation method

姜明、景元书、郭建侠、王有恒

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南京信息工程大学应用气象学院,南京210044

中国气象局气象探测中心,北京100081

三维超声风速仪 风向角 计算方法

中国气象局气候变化专项项目

CCSF-09-07

2011

气象科技
中国气象科学研究院 北京市气象局 中国气象局大气探测技术中心 国家卫星气象中心 国家气象信息中心

气象科技

CSTPCD
影响因子:1.154
ISSN:1671-6345
年,卷(期):2011.39(5)
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