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地球科学进展  2010, Vol. 25 Issue (11): 1273-1282    DOI: 10.11867/j.issn.1001-8166.2010.11.1273
观测数据应用     
大孔径闪烁仪和涡动相关仪观测显热通量之间的尺度关系
卢俐1,2,刘绍民2*,徐自为2,白洁2,王介民3
1. 北京市气象局气象信息中心,北京 100089;2. 北京师范大学遥感科学国家重点实验室,地理学与遥感科学学院,北京 100875;
3. 中国科学院寒区旱区环境与工程研究所,甘肃兰州 730000
The Scale Relationship of Sensible Heat Flux Measured by Large Aperture Scintillometer and Eddy Covariance System
Lu Li1,2, Liu Shaomin2, Xu Ziwei2, Bai Jie2, Wang Jiemin3
1.Meteorological Information Center of Beijng,Beijing Meteorological Bureau,Beijing 100089, China;
2. State Key Laboratory of Remote Sensing Science, School of Geography, Beijing Normal University, Beijing 100875, China;
3.Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences, Lanzhou 730000, China
 全文: PDF(1749 KB)  
摘要:

利用北京昌平小汤山2002年、2004年涡动相关仪和大孔径闪烁仪的观测数据,借助解析足迹模型计算的源区,分析均匀、非均匀下垫面上涡动相关仪和大孔径闪烁仪观测显热通量之间的差异和关系。结果表明:地表的均匀与非均匀性质,直接影响涡动相关仪和大孔径闪烁仪观测的显热通量的差异大小。在分析均匀、非均匀地表上2种仪器源区重叠面积及重叠区域内足迹值大小与观测通量值之间的关系后,构建一个非均匀地表上2台涡动相关仪与1台闪烁仪观测通量之间的尺度关系式。

关键词: 显热通量涡动相关仪大孔径闪烁仪尺度    
Abstract:

 With the flux data observed by Eddy Covariance system (EC) and Large Aperture Scintillometer (LAS) at Xiaotangshan (Changping district, Beijing) in 2002 and 2004, and based on an analytical footprint model, the scale relationship of sensible heat flux between EC and LAS measurement was analyzed. The results showed that the level of surface homogeneity or heterogeneity had a direct influence on the sensible heat flux difference measured by eddy covariance system and large aperture scintillometer. After analyzing the relationship between flux differences of EC and LAS observation and the footprint ratio and size ratio of overlap zone of source areas of the two sensors over homogeneous and heterogeneous surfaces, a scale transfer equation was constructed to composite the sensible heat flux measured by eddy covariance system at each patch into the area-averaged sensible heat flux.

Key words: Sensible heat flux    Eddy covariance system    Large aperture scintillometer    Scale
收稿日期: 2010-05-25 出版日期: 2010-11-10
ZTFLH:  P404  
基金资助:

公益性行业(气象)科研专项“大尺度水热通量观测系统的研制与应用研究”(编号:GYHY200706046);国家自然科学基金项目“地表水热通量的时空尺度扩展研究”(编号:40971194)和“基于遥感和数据同化方法的海河流域水文通量预测研究——SP2:不同尺度蒸散量和土壤水分的观测研究”(编号:30911130504)资助.

通信作者: 刘绍民(1967-),男,浙江绍兴人,教授,主要从事陆面过程观测与遥感应用研究.       E-mail: smliu@bnu.edu.cn
作者简介: 卢俐(1980-),女,四川成都人,工程师,主要从事地表水热通量的研究. E-mail:lulicd@126.com
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引用本文:

卢俐,刘绍民,徐自为,白洁,王介民. 大孔径闪烁仪和涡动相关仪观测显热通量之间的尺度关系[J]. 地球科学进展, 2010, 25(11): 1273-1282.

Lu Li, Liu Shaomin, Xu Ziwei, Bai Jie, Wang Jiemin. The Scale Relationship of Sensible Heat Flux Measured by Large Aperture Scintillometer and Eddy Covariance System. Advances in Earth Science, 2010, 25(11): 1273-1282.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2010.11.1273        http://www.adearth.ac.cn/CN/Y2010/V25/I11/1273

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