涡动相关方法是当前地气交换研究中最基本的通量观测方法。依据有关观测数据计算所得的通量结果与湍流资料处理软件的配置关系很大。本文选择了国际上通用的三种主要涡动相关数据处理软件（即EdiRe、 TK2/TK3和EddyPro）， 对国内外5个不同下垫面的通量站资料进行了比较分析。依据EdiRe计算模块逐步完善的EdiRe-w程序的处理结果与其他两个软件的比较表现出较好的一致性： （1）三个软件处理结果的相关性很高， 各决定系数R2多数大于0.99； （2）所得风速、 温度、 水汽浓度和CO2浓度的平均值几乎完全一致； （3）动量通量（或摩擦速度u*）的比较， 差别小于3%； 感热、 潜热和CO2通量的比较， EdiRe-w和EddyPro结果的差别一般小于5%； EdiRe-w和TK3的结果差异略大些， 但即便对较难测量的潜热通量和CO2通量， 相互差异也在9%以内。三个软件的比较结果表明， EdiRe软件具有模块功能较完备、 搭配较灵活和运算速度明显较快的特点， 是当前值得应用的好方法。
For flux observation at present research of land-atmosphere exchange system, eddy-covariance method (EC) is the most fundamental method. The calculated fluxes based on observation data are significantly influenced by the settings of turbulence data processing softwares. This paper comparatively analyzed the performance of three softwares (EdiRe, TK2/TK3 and EddyPro) based on EC data for different underlying surface collected from five domestic and foreign flux observation stations. Results calculated by EdiRe-w, which had been improved based on EdiRe modules from 2006, showed a good agreement with those calculated by the other two softwares. The specific conclusions are listed in the following: (1) Results of the three softwares showed a high correlation, and most of determination coefficients (R2) were higher than 0.99; (2) The mean values respectively calculated by three softwares were almost consistent with each other for wind speed, air temperature, vapor concentration and carbon dioxide concentration; (3) For the momentum flux (or friction velocity u*), the calculation differences were less than 3% for three softwares; and less than 5% for sensible heat flux, latent heat flux and carbon dioxide flux calculated by Edire-w and EddyPro; the differences between Edire-w and TK3 were a little larger, however, even for the latent heat flux and CO2 flux which are the most difficult to measure, they were still less than 9%. Finally, the comparatively analysis results suggested that EdiRe is an optimal software for processing EC data which is, with the characteristic of perfect function, flexibility in calling modules and fast computational speed.
[1]Lee X, Massman W, Law B, eds. Handbook of Micrometeorology: A Guide for Surface Flux Measurement and Analysis[M]. Boston: Kluwer Academic, 2004.
[2]王介民, 王维真, 奥银焕, 等. 复杂条件下湍流通量的观测与分析[J]. 地球科学进展, 2007, 22(8): 791-797.
[3]http://www.geos.ed.ac.uk/abs/research/micromet/EdiRe. 2012-04.
[4]http://www.bayceer.uni-bayreuth.de/mm/en/software/software/software_dl.php.2012-04.
[5]http://www.maq.wur.nl/. 2012-04.
[6]http://www.bgc-jena.mpg.de/. 2012-04.
[7]http://www.europe-fluxdata.eu/. 2012-04.
[8]http://www.licor.com/env/products/eddy_covariance/. 2012-04.
[9]Mauder M, Oncley S P, Vogt R, et al. The Energy Balance Experiment EBEX-2000. Part II: Intercomparison of eddy-covariance sensors and post-field data processing methods[J]. Bound-Layer Meteor, 2007, 123: 29-54.
[10]Mauder M, Foken T, Clement R, et al. Quality control of Carbo Europe flux data: Inter-comparison of eddy-covariance software[J]. Biogeosciences, 2008, 5: 451-462.
[11]王介民, 王维真, 刘绍民, 等. 近地层能量平衡闭合问题—综述及个例分析[J]. 地球科学进展, 2009, 24(7): 705-713.
[12]王介民, 刘晓虎, 祁永强. 应用涡旋相关方法对戈壁地区湍流输送特征的初步研究[J]. 高原气象, 1990, 9(2): 120-129.
[13]王介民. 涡动相关通量观测指导手册(Ver. 20120212)[Z]. http://westdc.westgis.ac.cn/water/surveystd. 2012.
[14]于贵瑞, 孙晓敏. 陆地生态系统通量观测的原理与方法[M]. 北京: 高等教育出版社, 2006.
[15]徐自为, 刘绍民, 宫丽娟, 等. 涡动相关仪观测数据的处理与质量评价研究[J]. 地球科学进展, 2008, 23(4): 357-370.
[16]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]. 遥感技术与应用, 2010, 25(6): 788-796.
[17]Campbell Scientific. Inc. 2008: EdiRe software for micrometeorological applications. http://s.campbellsci.com/documents/us/technical-papers/edire.pdf. April 2012.
[18]Mauder M, Foken T. Documentation and Instruction Manual of the Eddy-Covariance Software Package TK3. http://www.bayceer.uni-bayreuth.de/mm/en/software/software/software_dl.php. 2012-04.
[19]LI-COR. Inc. EddyPro 4.0 Help and User's Guide. 2012. http://envsupport.licor.com/help/EddyPro4/Default.htm.
[20]李新, 马明国, 王建, 等. 黑河流域遥感—地面观测同步试验: 科学目标与试验方案[J]. 地球科学进展, 2008, 23(9): 897-914.
[21]Foken T, Wichura B. Tools for quality assessment of surface-based flux measurements[J]. Agricultural and Forest Meteorology, 1996, 78: 83-105.
[22]Vickers D, Mahrt L. Quality control and flux sampling problems for tower and aircraft data[J]. J Atmos Oceanic Tech, 1997, 14: 512-526.
[23]Moore C J. Frequency response corrections for eddy correlation systems[J]. Bound-Layer Meteor, 1986, 37: 17-35.
[24]Moncrieff J B, Massheder J M, DeBruin H, et al. A system to measure surface fluxes of momentum, sensible heat, water vapor and carbon dioxide[J]. J Hydro, 1997, 188-189: 589-611.
[25]Kaimal J C, Wyngaard J C, Izumi Y, et al. Spectral characteristics of surface layer turbulence[J]. Quart J Roy Meteor Soc, 1972, 98: 563-589.
[26]Moncrieff J B, Clement R, Finnigan J, et al. Averaging, detrending and filtering of eddy covariance time series, in Handbook of micrometeorology: A guide for surface flux measurements[M]//Lee X, Massman W, Law B, eds.Dordrecht: Kluwer Academic, 2004: 7-31.
