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气象:2012,38(11):1436-1442
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稳态与湍流特征测试对通量数据质量的评价
(1.天津市气象局气象技术装备中心,天津 300074;2.中国气象局气象探测中心,北京 100081;3.南京信息工程大学,南京 210044)
Using Quality Assessment Method to Test the Data of Eddy Covariance
(1.Tianjin Meteorological Service, Tianjin 300074;2.Meteorological Observation Centre of CMA, Beijing 100081;3.Nanjing University of Information Science and Technology, Nanjing 210044)
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投稿时间:2011-12-02    修订日期:2012-08-15
中文摘要: 应用CO2通量、感热和潜热通量稳态测试及垂直速度积分测试相结合的湍流数据质量评价方法对锡林浩特国家气候观象台2009年全年的湍流通量观测数据进行了质量评价。结果表明,锡林浩特通量观测数据质量总体较好;80%以上数据通过质量评价为较好数据;质量评价较好的数据分布呈白天大于夜间、夏季大于冬季的特点。经过对比分析,前期数据处理能剔除大部分质量不好的数据,但应用稳态测试与湍流积分测试筛选后,数据质量仍有明显提高,能量闭合率较前期数据分析前提高2%以上。
Abstract:The quality assessment (QA) method which includes the steady state test of the CO2 flux, sensible/latent heat flux and integral turbulence characteristic test of the vertical velocity was used to analyze the turbulence flux data observed by eddy covariance at Xilinhot, 2009. The main results are as follows. The data are good on the whole and there are 80% data well assessed by the QA method. The good data size in daytime is more than in nighttime and in summer is more than in winter. From the comparative analysis, the pre processing work can eliminate most bad data. Furthermore, the quality of the data assessed by the QA method will be obviously improved. Using these good data to analyze the energy balance, the closure of the local energy balance has increased by more than 2%.
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基金项目:中国气象局气候变化专项项目“国家气候观象台CO2浓度及通量监测与分析”(CCSF 09 07)资助
引用文本:
姜明,郭建侠,景元书,2012.稳态与湍流特征测试对通量数据质量的评价[J].气象,38(11):1436-1442.
JIANG Ming,GUO Jianxia,JING Yuanshu,2012.Using Quality Assessment Method to Test the Data of Eddy Covariance[J].Meteor Mon,38(11):1436-1442.