干旱区生态环境知识资源中心(Arid): 黑河综合遥感联合试验涡动相关通量数据处理及产品分析

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	黑河综合遥感联合试验涡动相关通量数据处理及产品分析
其他题名	Data Processing and Product Analysis of Eddy Covariance Flux Data for WATER
	张智慧 1; 王维真 1; 马明国 1; 徐自为 2; 吴月茹 1; 黄广辉 1; 谭俊磊 1
来源期刊	遥感技术与应用
ISSN	1004-0323
出版年	2010
卷号	25 期号:6 页码:788-796
中文摘要	涡动相关通量数据的处理及质量控制是保证各涡动观测台站数据质量的重要步骤."黑河综合遥感联合试验"(Watershed Allied Telemetry Experi mental Research,WATER)从2007年底到现在连续观测积累了大量涡动相关通量观测资料.使用经过改进的Edi Re软件对盈科站,阿柔站和关滩站3个站点的原始涡动数据进行预处理和质量控制.通过异常值及野值点剔除,倾斜修正,超声虚温修正,时间滞后校正,频率响应修正和空气密度效应修正(WPL修正)等基本处理生成Level-1数据产品;再通过大气状态平稳性检验,总体湍流特征检验以及湍流通量统计特征分析等初步质量控制,生成Level-2数据产品.以盈科绿洲站2009年7月份涡动相关数据为例,着重介绍涡动相关数据处理过程中各校正方法的重要性及不同校正方法对湍流通量计算的贡献.结果表明:超声虚温修正后感热通量比修正前减少约7.7%;时间滞后校正后潜热通量和CO2通量分别增加了3.9%,2.7%;频率响应修正后感热通量,潜热通量及CO2通量分别增加了2.7%,10.5%,11.6%;WPL修正后潜热通量增加了1.7%,CO2通量减少了9.8%.最后将Campbell实时处理结果与Level-1产品及Level-2产品进行对比分析,并对黑河流域各涡动站做了总体数据精度评价,阿柔站数据质量最好,盈科站次之,关滩站较差
英文摘要	Eddy covariance(EC) flux data processing and quality control is an important procedure to ensure the data quality of each observation station. A large number of flux data measured by EC system have been accumulated based on the project of "Watershed Allied Telemetry Experimental Research"(WATER) since late 2007.Pre-processing and quality control were performed using improved EdiRe software developed by Edinburgh University to the original EC data at Yingke oasis station, Arou freeze-thaw observation station and Guantan forest station. The basic processing steps on the Level-1 data product including removal of outliers and spikes, tilt correction, sonic virtual temperature correction, time-lag correction, frequency response correction, and correction for density effects(WPL correction). Level-2 data product is generated with initial quality control steps based on Level-1 data product, including atmosphere state stationarity test, overall turbulence characteristics test and turbulent flux statistical characteristics analysis. In this paper, taking EC data of Yingke oasis station in July,2008 as an example, the improvements of each correction steps during EC flux data processing and the contribution of different correction methods to the calculation of turbulent flux were analyzed in detail. The results show that:after sonic virtual temperature correction, sensible heat flux decreased about 7.7%;after time-lag correction, latent heat flux and carbon dioxide flux increased by 3.9% and 2.7% respectively;after frequency response correction, sensible heat flux, latent heat flux and carbon dioxide flux increased by 2.7%,10.5% and 11.6% respectively;after WPL correction, latent heat flux increased by 1.7%, and carbon dioxide flux decreased by 9.8%. Finally, the Level-1 product and Level-2 product were compared with the Campbell real-time processing results, and an overall data accuracy evaluation on each eddy covariance station for these three stations was obtained. It is concluded that the data quality of the Arou freeze-thaw observation station is the best, and that of the Yingke oasis station is better, and that of the Guantan forest station is poor
中文关键词	涡动相关法 ; 湍流通量 ; 数据处理 ; 质量控制
英文关键词	WATER Eddy covariance WATER Turbulent flux Data processing Quality control
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:4105697
来源机构	中国科学院西北生态环境资源研究院 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225841
作者单位	1.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.北京师范大学, 遥感科学国家重点实验室, 北京 100875, 中国
推荐引用方式 GB/T 7714	张智慧,王维真,马明国,等. 黑河综合遥感联合试验涡动相关通量数据处理及产品分析[J]. 中国科学院西北生态环境资源研究院, 北京师范大学,2010,25(6):788-796.
APA	张智慧.,王维真.,马明国.,徐自为.,吴月茹.,...&谭俊磊.(2010).黑河综合遥感联合试验涡动相关通量数据处理及产品分析.遥感技术与应用,25(6),788-796.
MLA	张智慧,et al."黑河综合遥感联合试验涡动相关通量数据处理及产品分析".遥感技术与应用 25.6(2010):788-796.