收稿日期: 2010-05-25
修回日期: 2010-09-13
网络出版日期: 2010-11-10
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.
The Scale Relationship of Sensible Heat Flux Measured by Large Aperture Scintillometer and Eddy Covariance System
Received date: 2010-05-25
Revised date: 2010-09-13
Online published: 2010-11-10
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 . DOI: 10.11867/j.issn.1001-8166.2010.11.1273
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.
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