EddyPro 涡度协方差数...

EddyPro 涡度协方差数据处理软件参数指标

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EddyPro Express VS EddyPro Advanced


 


EddyPro Express
  (默认修正，快速方便)

EddyPro Advanced
  (用户可选，强大灵活)

坐标旋转修正

  • 二次坐标轴旋转

  • 二次坐标轴旋转

  • 三次坐标轴旋转

  • 基于风区的平面坐标拟合

  • 基于风区无速率偏差的平面坐标拟合

  • 不做修正

除趋势修正

  • 块平均

  • 块平均

  • 线性除趋势

  • 滑动平均

  • 指数加权平均

数据同步

  • 默认值下最大协方差(循环相关)

  • 默认值下最大协方差

  • 默认值缺失下的最大协方差

  • 常量

  • 不做修正

统计检验

  • 异常值计数/去除

  • 振幅分辨率

  • 缺失值

  • 绝对限度

  • 偏度和峰度

  • 异常值计数/去除

  • 振幅分辨率

  • 缺失值

  • 绝对限度

  • 偏度和峰度

  • 间断点

  • 时滞

  • 迎角

  • 水平风稳定度

  • 不做检测

密度修正

  • 通过WPL修正(Webb 等，1980)或点对点转换的方式换算为混合比

  • 使用(或换算成)混合比(Burba 等，2011)

  • 就开路涡度系统而言，通过Webb 等(1980)方法进行修正；        

  • 就闭路涡度系统而言，通过lbrom 等，(2007)方法进行修正        

  • 针对LI-7500的非生长季吸收修正(Burba 等，2008)

  • 不做修正

超声虚温修正

  • Van Dijk等(2004)

  • Van Dijk 等(2004)

谱修正

  • 高通滤波修正(Moncrieff等，2004)

  • 低通滤波修正(Moncrieff等，1997)

  • 高通滤波修正(Moncrieff等，2004)

  • 低通滤波修正，可选：

    • Moncrieff等(1997)

    • Horst(1997)

    • Ibrom等(2007)

    • Horst 和Lenschow(2009)

迎角修正

  • 是

  • 是

数据质量控制标记

  • 依据Foken等(2004)进行检测

  • 根据Mauder和Foken(2004)进行检测        

  • 根据Foken(2003)进行标记

  • 在进行这项操作(Gockede等，2004)之后进行标记        

足迹估测

  • Kljun等(2004)

  • Kljun等(2004)

  • Kormann和Meixner (2001)

  • Hsieh等(2000)

LI-7700光谱修正

  • 是(McDermitt等, 2010)

  • 是(McDermitt等, 2010)

文件输出

  • 通量、质量标记和其他数据完整输出

  • 美国通量数据格式

  • GHG 欧洲通量数据格式

  • 原始数据统计

列表可选:

  • 通量、质量标记和其他数据完整输出

  • 美国通量数据格式

  • GHG 欧洲通量数据格式

  • 原始数据统计

  • 全长度谱和协谱分析

  • 箱式谱和协谱分析

  • 箱式累积频率

  • 稳态和湍流检测细节

  • 每次统计检测/修正之后的时间序列原始数据

 


References:

Foken, T., M. G?ckede, M. Mauder, L. Mahrt, B. D. Amiro, and J. W. Munger. 2004. Post-field data quality control. In X. Lee, et al. (ed.), Handbook of Meteorology. 35: 409-414.
Fratini, G., N. Arriga, C. Trotta, D. Papale. 2010. Underestimation of water vapour fluxes by eddy covariance closed-path systems due to relative humidity effects. American Geophysical Union Fall Meeting. Abstract #B11D-0400.
G?ckede, M., C. Rebmann, T. Foken, 2004. A combination of quality assessment tools for eddy covariance measurements with footprint modelling for the characterisation of complex sites. Agricultural and Forest Meteorology, 127: 175-188.
Horst, T. W. 1997. A simple formula for attenuation of eddy fluxes measured with first-order-response scalar sensors. Boundary Layer Meteorology, 82: 219-233.
Ibrom, A., E. Dellwik, H. Flyvbjerg, N. O. Jensen, and K. Pilegaard. 2007. Strong low-pass filtering effects on water vapour flux measurements with closed path eddy covariance systems. Agricultural and Forest Meteorology, 147: 140-156.
Kaimal, J. C., and J. E. Gaynor. 1991. Another look at sonic thermometry, Boundary Layer Meteorology, 56: 401-410.
Kljun, N., P. Calanca, M. W. Rotach, and H. P. Schmid. 2004. A simple parameterization for flux footprint predictions. Boundary Layer Meteorology, 112: 503-523.
McDermitt, D., G. Burba, L. Xu, T. Anderson, A. Komissarov, B. Riensche, J. Schedlbauer, G. Starr, D. Zona, and W. Oechel, S. Oberbauer, and S. Hastings. 2010. A new low-power, open path instrument for measuring methane flux by eddy covariance. Applied Physics B: Laser and Optics, 102: 391-405.
Moncrieff, J. B., R. Clement, J. Finnigan, and T. Meyers. 2004. Averaging, detrending and filtering of eddy covariance time series, in Handbook of micrometeorology: A guide for surface flux measurements, eds. Lee, X., W. J. Massman and B. E. Law. Dordrecht: Kluwer Academic, 7-31.
Moncrieff, J. B., J. M. Massheder, H. de Bruin, J. Elbers, T. Friborg, B. Heusinkveld, P. Kabat, S. Scott, H. Soegaard, and A. Verhoef. 1997. A system to measure surface fluxes of momentum, sensible heat, water vapor and carbon dioxide. Journal of Hydrology, 188-189: 589-611.
Schuepp, P. H., M. Y. Leclerc, J. I. MacPherson, and R. L. Desjardins. 1990. Footprint prediction of scalar fluxes from analytical solutions of the diffusion equation. Boundary Layer Meteorology, 50: 355-373.
Van Dijk, A., A. F. Moene, and H. A. R. de Bruin. 2004. The principles of surface flux physics: Theory, practice and description of the ECPACK library, Internal Report 2004/1, Meteorology and Air Quality Group, Wageningen University, Wageningen, the Netherlands, 99 pp.
Vickers, D. and L. Mahrt. 1997. Quality control and flux sampling problems for tower and aircraft data. Journal of Atmospheric and Oceanic Technology, 14: 512-526.
Webb, E. K., G. I. Pearman, and R. Leuning. 1980. Correction of flux measurements for density effects due to heat and water vapour transfer. Quarterly Journal of the Royal Meteorological Society, 106: 85-100.
 
 
 


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