| 涡度相关仪倾斜订正方法的比较及应用 |
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| 引用本文： | 谌志刚,卞林根,陆龙骅,汪瑛. 涡度相关仪倾斜订正方法的比较及应用[J]. 气象科技, 2008, 36(3): 355-359 |
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| 作者姓名： | 谌志刚 卞林根 陆龙骅 汪瑛 |
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| 作者单位： | 广东省气象局,广州,510080;中国气象科学研究院,北京,100081 |
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| 基金项目： | 国家973暴雨试验项目资助 |
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| 摘 要： | 利用973暴雨项目2002年在安徽肥西观测的涡度相关资料,针对目前涡度相关法中存在的仪器倾斜误差问题,采用两种倾斜订正方法计算湍流参数并进行对比分析.结果表明,三次坐标轴旋转倾斜订正方法和平面拟合方法均可以对仪器倾斜引起的误差进行坐标旋转订正,有效剔除仪器倾斜引起的侧向应力的影响,以及仪彝倾斜时水平方向风速引起的虚假湍流通量,提高了湍流通量的计算精度.两种倾斜订正方法各有一定适用条倬,平面拟合方法优于三次坐标轴旋转倾斜订正方法.
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| 关 键 词： | 涡度相关法 三次坐标轴旋转订正 平面拟合方法 |
| 收稿时间： | 2007-03-07 |
| 修稿时间： | 2007-04-23 |
Contrast and Application of Tilt Correction Methods for Eddy-Covariance Measurement |
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| Chen Zhigang,Bian Lingen,Lu Longhua and Wang Ying. Contrast and Application of Tilt Correction Methods for Eddy-Covariance Measurement[J]. Meteorological Science and Technology, 2008, 36(3): 355-359 |
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| Authors: | Chen Zhigang Bian Lingen Lu Longhua Wang Ying |
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| Affiliation: | Guangdong Provincial Meteorological Bereau, Guangzhou 510080;Chinese Academy of Meteorological Sciences, Beijing 100081;Chinese Academy of Meteorological Sciences, Beijing 100081;Guangdong Provincial Meteorological Bereau, Guangzhou 510080 |
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| Abstract: | The eddy covariance data from the heavy rainfall experiment at Feixi County in Anhui Province in 2002 is used to contrast two axis rotation method, aiming at the tilt errors of eddy covariance measurement. The results show that both triple axis rotation method and planar fit method can eliminate effectively the illusive flux and side stress errors caused by horizontal winds because of instrument tilt, so to improve flux precision. Both methods have its own strong points, but the planar fit method is better than triple axis rotation method relatively. |
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| Keywords: | eddy covariance method triple axis rotation planar fit method |
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