| 塔中涡动资料不同坐标旋转方法比较分析 |
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| 引用本文： | 李振杰,何清-,金莉莉,买买提艾力.买买提依明,赵佳伟.塔中涡动资料不同坐标旋转方法比较分析[J].新疆气象,2019,13(3):105-111. |
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| 作者姓名： | 李振杰 何清- 金莉莉 买买提艾力.买买提依明 赵佳伟 |
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| 作者单位： | 中国气象局乌鲁木齐沙漠气象研究所,中国气象局乌鲁木齐沙漠气象研究所,中国气象局乌鲁木齐沙漠气象研究所,中国气象局乌鲁木齐沙漠气象研究所,新疆师范大学 |
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| 基金项目： | 国家自然科学基金(41605008)、新疆沙漠与绿洲区干旱致灾及陆面过程观测试验[GYHY(QX)201506001-14]、中国博士后基金(162014)、中央级公益性科研院所基本科研业务费专项资金(IDM201505)和新疆高层次人才引进项目(2016-金莉莉)共同资助。第一 |
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| 摘 要： | 坐标旋转是涡动协方差(EC)通量观测数据后处理当中必须进行的步骤,本文利用塔克拉玛干沙漠腹地塔中西面标校站自然沙丘上3 m高度和塔中本站32 m高度2009年4—10月湍流通量数据,对比分析了不同坐标旋转方法在塔中通量观测数据中的应用。结果表明,塔克拉玛干沙漠腹地塔中湍流各通量在旋转订正前后差别不显著,不订正造成的通量计算误差1%。塔中32 m和塔中西站3 m通量计算误差,与两个站点的采集仪器架设高度差别较大有关。即使对于相对平坦的下垫面,也必须要进行倾斜校正,以修正地势、仪器振动、安装倾斜等产生的虚假信息。本研究对塔中涡动资料进行旋转时采用了二次坐标旋转方法。此结果为塔克拉玛干沙漠腹地EC通量观测的风速仪倾斜校正提供参考。
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| 关 键 词： | 湍流通量 质量控制 二次旋转 三次旋转 平面拟合 |
| 收稿时间： | 2018/11/18 0:00:00 |
| 修稿时间： | 2019/3/20 0:00:00 |
Application and comparison of different coordinate rotation methods on eddy fluxes in the hinterland of the Taklimakan Desert |
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| LI Zhenjie,HE Qing-,JIN Lili,ALI Mamtimin and ZHAO Jiawei.Application and comparison of different coordinate rotation methods on eddy fluxes in the hinterland of the Taklimakan Desert[J].Bimonthly of Xinjiang Meteorology,2019,13(3):105-111. |
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| Authors: | LI Zhenjie HE Qing- JIN Lili ALI Mamtimin and ZHAO Jiawei |
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| Institution: | Taklimakan Desert Meteorology Field Experiment Station of CMA,Institute of Desert Meteorology,China Meteorological Administration,Taklimakan Desert Meteorology Field Experiment Station of CMA,Institute of Desert Meteorology,China Meteorological Administration,Taklimakan Desert Meteorology Field Experiment Station of CMA,Institute of Desert Meteorology,China Meteorological Administration,Taklimakan Desert Meteorology Field Experiment Station of CMA,Institute of Desert Meteorology,China Meteorological Administration,College of Geography Science and Tourism,Xinjiang Normal University |
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| Abstract: | Coordinate rotation is an essential step in eddy covariance (EC) flux measurements. Systematically assessing impacts of coordinate rotation methods can improve the accuracy in EC flux estimations. The turbulent fluxes in Tazhong station in the hinterland of the Taklamakan desert have no significant difference before and after the rotation correction, which error of flux calculation is less than 1% before the rotation correction. The calculation error in 32-m height tower in Tazhong station and 3-m height tower in the west of Tazhong station is related to the height of acquisition instrument erection between the two stations. Consequently, various correction methods should not be used blindly in the process of data processing. For relatively flat underlying surfaces, if there is no appropriate correction method, it could not use coordinate rotation methods. In this paper, we adopted the double coordinate rotation method to process EC flux data in the Tazhong. The results are useful for the tilt correction of anemometer in EC flux observations in the hinterland of the Taklimakan Desert. |
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| Keywords: | turbulent flux quality control double rotation triple rotation planar fit |
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