DOI: 10.1002/2013JD020260
论文题名: Intercomparison of surface energy flux measurement systems used during the HiWATER-MUSOEXE
作者: Xu Z. ; Liu S. ; Li X. ; Shi S. ; Wang J. ; Zhu Z. ; Xu T. ; Wang W. ; Ma M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 23 起始页码: 13140
结束页码: 13157
语种: 英语
英文关键词: eddy covariance system
; large aperture scintillometer
; radiometer
Scopus关键词: Anemometers
; Experiments
; Radiometers
; Scintillation
; Correlation coefficient
; Eddy covariance systems
; Heterogeneous land surfaces
; Large aperture scintillometers
; Radiation measurements
; Root-mean-square errors
; Subsequent data analysis
; Turbulent flux measurements
; Heat flux
; boundary layer
; eddy covariance
; energy flux
; error analysis
; evapotranspiration
; flux measurement
; land surface
; surface energy
; telemetry
; turbulent flow
; China
; Gansu
; Heihe Basin
英文摘要: Agreement among instruments is very important for the Multi-Scale Observation Experiment on Evapotranspiration over heterogeneous land surfaces of The Heihe Watershed Allied Telemetry Experimental Research (HiWATER-MUSOEXE), particularly in regard to radiation and turbulent flux measurements. Before HiWATER-MUSOEXE was conducted, 20 eddy covariance (EC) system sets, 18 radiometer sets, and seven large aperture scintillometers (LASs) sets were intercompared over the Gobi desert between 14 and 24 May 2012. For radiometers, the four-component radiation measurements exhibited good agreement - the average root-mean-square error (RMSE) and mean relative error (MRE) for the net radiation were 10.38 W m-2 and 1.24%, respectively. With regard to the EC systems, the best consistency for sensible heat fluxes was found among CSAT3 sonic anemometers and Li7500A/Li7500/EC150 combinations (average RMSE, 12.30 W m-2 and MRE, -1.36%), followed by Gill sonic anemometers and Li7500A/Li7500 combinations when a proper angle of attack correction method was applied (average RMSE, 16.75 W m-2 and MRE, -5.52%). The sensible heat flux measured using different LASs agreed well with high correlation coefficients - the average RMSE and MRE values were 10.26 W m-2 and 5.48% for boundary layer scintillometer (BLS) 900, 16.32 W m-2 and 10.47% for BLS450, and 14.38 W m-2 and -3.72% for ZZLAS, respectively. The EC and LAS measurements were compared and agreed well over homogeneous underlying surfaces, which also indicated that the EC and LAS measurements would be comparable in the follow-up experiment. The intercomparison results can be used to determine instrument placement and are very helpful for subsequent data analysis. Key Points Intercomparison of radiometers Intercomparison of eddy covariance systems Intercomparison of large aperture scintillometers ©2013. American Geophysical Union. All Rights Reserved. 资助项目: 41301355
; 91125002
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63119
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: State Key Laboratory of Remote Sensing Science, School of Geography, Beijing Normal University, No.19 Xinjiekouwai St., Beijing 100875, China; Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China; College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Recommended Citation:
Xu Z.,Liu S.,Li X.,et al. Intercomparison of surface energy flux measurement systems used during the HiWATER-MUSOEXE[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(23)