近岸海洋气象平台涡动相关数据处理与质量控制

doi:10.11867/j.issn.1001-8166.2011.09.0954

地球科学进展 ›› 2011, Vol. 26 ›› Issue (9): 954 -964. doi: 10.11867/j.issn.1001-8166.2011.09.0954

赵中阔 ^1,2，廖菲 ²，刘春霞 ²，毕雪岩 ²，王介民 ³，万齐林 ²，黄建 ²

1.广州中心气象台，广东广州 510080; 2.中国气象局广州热带海洋气象研究所海洋气象联合开放实验室，广东广州 510080; 3.中国科学院寒区旱区环境与工程研究所，甘肃兰州 730000

收稿日期:2011-02-17 修回日期:2011-07-13 出版日期:2011-09-10
通讯作者: 赵中阔
基金资助:
中国气象局气象关键技术集成与应用(重点/面上)项目“海洋气象新技术业务化集成应用”(编号：CMAGJ2011M37)；公益性行业（气象）专项“南海热带云团活动及其强风的监测和预报技术”(编号：GYHY201106036)；广东省气象局科技创新团队项目“海洋气象预警预报技术研究”资助.

Processing and Quality Control of Eddy Covariance Measurements from a Coastal Marine Meteorological Platform

Zhao Zhongkuo ^{1, 2}, Liao Fei ², Liu Chunxia ², Bi Xueyan ²,Wang Jiemin ³, Wan Qilin ², Huang Jian ²

1.Guangzhou Central Meteorological Observatory, Guangzhou 510080, China;2.Institute of Tropical and Marine Meteorology, The Joint Open Laboratory of Marine Meteorology, CMA, Guangzhou 510080, China; 3.Cold and Arid Regions Environmental and Engineering Research Institute, Chines Academy of Sciences, Lanzhou 730000,China

Received:2011-02-17 Revised:2011-07-13 Online:2011-09-10 Published:2011-09-10

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涡动相关方法在海洋—大气界面通量过程的观测研究中得到广泛应用。通量观测的数据质量很大程度上取决于环境条件和订正方法的正确应用，因此需要对数据进行处理与质量控制。基于博贺海洋气象平台上方2层涡动相关系统约7个月的湍流观测数据，分析了目前未能在数据采集平台上实时运行的几种订正方法对通量结果的影响。分析表明：在通量值较小时，去野点可使通量值发生很大改变；大部分情况下去野点对通量（包括摩擦速度、潜热、感热与CO₂）造成的改变小于1%。由于该观测点的大气边界层下垫面为波浪场，平面拟合的效果要明显优于二次旋转。频率损失订正结果显示，订正系数随风速的变化存在较大波动，此项订正平均可使各种湍流通量增强5%~8%，夜晚的订正幅度稍大于白天的情况。湍流通量的频率累积检测显示，对于大气层结稳定性发生转换的时段，30 min的累积时间长度不足以包括低频事件对通量的贡献。最后，总体湍流特征检验与平稳性检验显示，50%左右的数据可用于基本研究。2层通量结果的比较也显示，博贺站的通量数据质量可以得到保证。

关键词: 近海层, 湍流通量, 涡动相关数据, 质量控制

The eddy covariance method is extensively applied in the air-sea interface turbulent flux measurements. The quality of the flux measurements depends greatly on the exact use of the correction methods and the marine meteorological conditions. Therefore some post correction processes and quality controls to the data are necessary. Based on about 7, months measurements of 2 eddy covariance systems aloft the coastal marine meteorological platform at Bohe, Guangdong Province, the effects of some correction methods, which are not running on the data logger, are analyzed. The results show: the effect of despiking is apparent only when the fluxes are low. Mostly, the changes of the fluxes (including U^*, latent heat, sensible heat and CO₂flux) are less than 1% by despiking. Due to the influence of the sea surface wave field, the planar fit method is apparently better than the double rotation scheme. The spectral response correction can enhance the fluxes by 5%~8%, and the enhancement during daytime is slightly less than that during nighttime. The ogive test shows that the averaging period of 30 min is probably not enough during the stability transition periods in daytime. Finally, the turbulence stationarity test and integral turbulence characteristics test show that about 50% data are of high quality and can be used for basic research. Comparison of the flux measurements on two levels also confirms that the data quality of the Bohe station.

中图分类号:

P433

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