Quality control of CarboEurope flux data -: Part 2:: Inter-comparison of eddy-covariance software

被引:143
作者
Mauder, M. [1 ]
Foken, T. [1 ]
Clement, R. [2 ]
Elbers, J. A. [3 ]
Eugster, W. [4 ]
Gruenwald, T. [5 ]
Heusinkveld, B. [6 ]
Kolle, O. [7 ]
机构
[1] Univ Bayreuth, Dept Micrometerol, Bayreuth, Germany
[2] Univ Edinburgh, Inst Ecol & Resource Management, Edinburgh EH8 9YL, Midlothian, Scotland
[3] Univ Wageningen & Res Ctr, Wageningen, Netherlands
[4] ETH, Inst Plant Sci, CH-8092 Zurich, Switzerland
[5] Tech Univ Dresden, Inst Hydrol & Meteorol, Dresden, Germany
[6] Univ Wageningen & Res Ctr, Dept Meterol & Air Qual, Wageningen, Netherlands
[7] Max Planck Inst Biogeochem, Jena, Germany
关键词
D O I
10.5194/bg-5-451-2008
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
As part of the quality assurance and quality control activities within the CarboEurope-IP network, a comparison of eddy-covariance software was conducted. For four five-day datasets, CO2 flux estimates were calculated by seven commonly used software packages to assess the uncertainty of CO2 flux estimates due to differences in post-processing. The datasets originated from different sites representing different commonly applied instrumentation and different canopy structures to cover a wide range of realistic conditions. Data preparation, coordinate rotation and the implementation of the correction for high frequency spectral losses were identified as crucial processing steps leading to significant discrepancies in the CO2 flux results. The overall comparison indicated a good although not yet perfect agreement among the different software within 5-10% difference for 30-min CO2 flux values. Conceptually different ideas about the selection and application of processing steps were a main reason for the differences in the CO2 flux estimates observed. A balance should be aspired between scientific freedom on the one hand, in order to advance methodical issues, and standardisation of procedures on the other hand, in order to obtain comparable fluxes for multi-site synthesis studies.
引用
收藏
页码:451 / 462
页数:12
相关论文
共 58 条