Quality control of CarboEurope flux data – Part 1: Coupling footprint analyses with flux data quality assessment to evaluate sites in forest ecosystems

Biogeosciences - Tập 5 Số 2 - Trang 433-450
Mathias Göckede1,2, Thomas Foken2, Marc Aubinet3, Minna Aurela2, J. Banza4, Christian Bernhofer5, Jean-Marc Bonnefond6, Yves Brunet6, Arnaud Carrara7, R. Ceulemans8, Ebba Dellwik9, A. J. Dolman10, W. Eugster11, Jürg Fuhrer12, Thomas Grünwald5, Bernard Heinesch3, Ivan A. Janssens13, Alexander Knohl11,14, Renate Koeble15, Denis Loustau16, Giovanni Manca15, Michal V. Marek17, Barbara Marcolla2,18, J. Mateus19, Gioṙgio Matteucci20, Matthias Mauder21,22, Mirco Migliavacca23, Stefano Minerbi24, F. Miglietta25, Leonardo Montagnani24, E.J. Moors10, Jean‐Marc Ourcival26, Dario Papale27, J. S. Pereira19, Kim Pilegaard9, Gabriel Pita19, Serge Rambal26, Corinna Rebmann14, Abel Rodrigues28, Eyal Rotenberg29, M. J. Sanz7, Pavel Sedlák17, G. Seufert15, Lukas Siebicke2, Jean‐François Soussana30, Riccardo Valentini27, Timo Vesala18, Hans Verbeeck31,13, Dan Yakir29
1Department of Forest Science (United States)
2FMI - Finnish Meteorological Institute (Erik Palmenin aukio 1, P.O. Box 503, 00 101 Helsinki, Finland - Finland)
3Université de Liège (Place du 20-Août, 7 4000 Liège - Belgium)
4Universidade de Évora (Largo dos Colegiais 2, 7004-516 Évora - Portugal)
5TU Dresden - Technische Universität Dresden = Dresden University of Technology (TU Dresden 01062 Dresden - Germany)
6EPHYSE - Écologie fonctionnelle et physique de l'environnement (Service Forêt-Bois, Unité EPHYSE 33612 Cestas Cedex - France)
7Centro de Estudios Ambientales del Mediterraneo (Spain)
8School of GeoSciences (United Kingdom)
9Risø National Laboratory (Frederiksborgvej 399, 4000 Roskilde, Danemark - Denmark)
10WUR - Wageningen University and Research Centre (Netherlands)
11Institute of Plant Sciences (Zurich - Switzerland)
12Air Pollution and Climate Group (Switzerland)
13Department of Biology, Research Group of Plant and Vegetation Ecology (Belgium)
14MPI-BGC - Max Planck Institute for Biogeochemistry (Hans-Knoell-Str. 10, 07745 Jena - Germany)
15Institute for Environment and Sustainability (Belgium)
16EEF - Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] (INRA - Université de Lorraine, rue d'Amance, 54280 Champenoux - France)
17CAS - Czech Academy of Sciences [Prague] (Národní 3, 117 20 Prague 1 - Czech Republic)
18Helsingin yliopisto = Helsingfors universitet = University of Helsinki (Yliopistonkatu 4, 00100 Helsinki - Finland)
19ULISBOA - Universidade de Lisboa = University of Lisbon = Université de Lisbonne (Alameda da Universidade 1649-004 Lisboa - Portugal)
20CNR - National Research Council of Italy | Consiglio Nazionale delle Ricerche (Piazzale Aldo Moro, 7 - 00185 Roma - Italy)
21AAFC - Agriculture and Agri-Food (Agriculture and Agri-Food Canada 1341 Baseline Road Ottawa, ON K1A 0C5 - Canada)
22University of Bayreuth (95440 Bayreuth - Germany)
23Remote Sensing of Environmental Dynamics Laboratory (Italy)
24Agency for the Environment (Italy)
25Edin. - University of Edinburgh (Old College South Bridge Edinburgh EH8 9YL - United Kingdom)
26CNRS - Centre National de la Recherche Scientifique (France)
27Department of Forest Environment and Resources (Italy)
28Estaçao Florestal Nacional (France)
29Weizmann Institute of Science [Rehovot, Israël] (234 Herzl Street, Rehovot 7610001 - Israel)
30UREP - Unité de recherche sur l'Ecosystème Prairial (INRAE Site de Crouël - 5 Chemin de Beaulieu - 63000 CLERMONT FERRAND - France)
31CEA - Commissariat à l'énergie atomique et aux énergies alternatives (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)

Tóm tắt

Abstract. We applied a site evaluation approach combining Lagrangian Stochastic footprint modeling with a quality assessment approach for eddy-covariance data to 25 forested sites of the CarboEurope-IP network. The analysis addresses the spatial representativeness of the flux measurements, instrumental effects on data quality, spatial patterns in the data quality, and the performance of the coordinate rotation method. Our findings demonstrate that application of a footprint filter could strengthen the CarboEurope-IP flux database, since only one third of the sites is situated in truly homogeneous terrain. Almost half of the sites experience a significant reduction in eddy-covariance data quality under certain conditions, though these effects are mostly constricted to a small portion of the dataset. Reductions in data quality of the sensible heat flux are mostly induced by characteristics of the surrounding terrain, while the latent heat flux is subject to instrumentation-related problems. The Planar-Fit coordinate rotation proved to be a reliable tool for the majority of the sites using only a single set of rotation angles. Overall, we found a high average data quality for the CarboEurope-IP network, with good representativeness of the measurement data for the specified target land cover types.

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Tài liệu tham khảo

Amiro, B. D.: Footprint climatologies for evapotranspiration in a boreal catchment, Agr. Forest Meteorol., 90, 195–201, 1998.

Arya, S. P.: Introduction to Micrometeorology. Academic Press, San Diego, 415 pp, 2001.

Aubinet, M., Grelle, A., Ibrom, A., Rannik, Ü., Moncrieff, J., Foken, T., Kowalski, A. S., Martin, P. H., Berbigier, P., Bernhofer, C., Clement, R., Elbers, J., Granier, A., Grünwald, T., Morgenstern, K., Pilegaard, K., Rebmann, C., Snijders, W., Valentini, R., and Vesala, T.: Estimates of the annual net carbon and water exchange of forests: The EUROFLUX methodology, Adv. Ecol. Res., 30, 113–175, 2000.

Baldocchi, D., Falge, E., Gu, L. H., Olson, R., Hollinger, D., Running, S., Anthoni, P., Bernhofer, C., Davis, K., Evans, R., Fuentes, J., Goldstein, A., Katul, G., Law, B., Lee, X.H., Malhi, Y., Meyers, T., Munger, W., Oechel, W., Paw U, K. T., Pilegaard, K., Schmid, H. P., Valentini, R., Verma, S., Vesala, T., Wilson, K., and Wofsy, S.: FLUXNET: A new tool to study the temporal and spatial variability of ecosystem-scale carbon dioxide, water vapor, and energy flux densities, B. Am. Meteorol. Soc., 82, 2415–2434, 2001.

Baldocchi, D. D., Finnigan, J. J., Wilson, K., Paw U, K. T., and Falge, E.: On measuring net ecosystem carbon exchange over tall vegetation on complex terrain, Bound.-Lay. Meteorol., 96, 257–291, 2000.

Baldocchi, D. D., Krebs, T., and Leclerc, M. Y.: "Wet/dry Daisyworld": a conceptual tool for quantifying the spatial scaling of heterogeneous landscapes and its impact on the subgrid variability of energy fluxes, Tellus B, 57, 175–188, 2005.

Ciais, P., Reichstein, M., Viovy, N., Granier, A., Ogee, J., Allard, V., Aubinet, M., Buchmann, N., Bernhofer, C., Carrara, A., Chevallier, F., De Noblet, N., Friend, A. D., Friedlingstein, P., Grünwald, T., Heinesch, B., Keronen, P., Knohl, A., Krinner, G., Loustau, D., Manca, G., Matteucci, G., Miglietta, F., Ourcival, J. M., Papale, D., Pilegaard, K., Rambal, S., Seufert, G., Soussana, J. F., Sanz, M. J., Schulze, E. D., Vesala, T., and Valentini, R.: Europe-wide reduction in primary productivity caused by the heat and drought in 2003, Nature, 437, 529–533, 2005.

Dellwik, E. and Jensen, N. O.: Internal equilibrium layer growth over forest, Theor. Appl. Climatol., 66, 173–184, 2000.

Dellwik, E. and Jensen, N. O.: Flux-profile relationships over a fetch limited beech forest, Bound.-Lay. Meteorol., 115, 179–204, 2005.

Finnigan, J. J., Clement, R., Malhi, Y., Leuning, R., and Cleugh, H. A.: A re-evaluation of long-term flux measurement techniques – Part I: Averaging and coordinate rotation, Bound.-Lay. Meteorol., 107, 1–48, 2003.

Foken, T., Skeib, G., and Richter, S. H.: Dependence of the integral turbulence characteristics on the stability of stratification and their use for Doppler-Sodar measurements, Z. Meteorol., 41, 311–315, 1991.

Foken, T. and Wichura, B.: Tools for quality assessment of surface-based flux measurements, Agr. Forest Meteorol., 78, 83–105, 1996.

Foken, T., Göckede, M., Mauder, M., Mahrt, L., Amiro, B. D., and Munger, J. W.: Post-field data quality control, in: Handbook of Micrometeorology: A guide for Surface Flux Measurements, edited by: Lee, X., Massman, W. J., and Law, B. E., Kluwer Academic Publishers, Dordrecht, pp. 181–208, 2004.

Foken, T. and Leclerc, M. Y.: Methods and limitations in validation of footprint models, Agr. Forest Meteorol., 127, 223–234, 2004.

Foken, T.: Angewandte Meteorologie, Mikrometeorologische Methoden, (2. überarb. u. erw. Aufl.), Springer, Berlin, Heidelberg, New York, 326 pp, 2006.

Gerbig, C., Lin, J. C., Wofsy, S. C., Daube, B. C., Andrews, A. E., Stephens, B. B., Bakwin, P. S., and Grainger, C. A.: Toward constraining regional-scale fluxes of CO2 with atmospheric observations over a continent: 2. Analysis of COBRA data using a receptor-oriented framework, J. Geophys. Res.-Atmos., 108, 4757, https://doi.org/10.1029/2003JD003770, 2003.

Göckede, M., Rebmann, C., and Foken, T.: A combination of quality assessment tools for eddy covariance measurements with footprint modelling for the characterisation of complex sites, Agr. Forest Meteorol., 127, 175–188, 2004.

Göckede, M., Markkanen, T., Hasager, C. B., and Foken, T.: Update of a footprint-based approach for the characterisation of complex measurement sites, Bound.-Lay. Meteorol., 118, 635–655, 2006.

Göckede, M., Thomas, C., Markkanen, T., Mauder, M., Ruppert, J., and Foken, T.: Sensitivity of Lagrangian Stochastic footprints to turbulence statistics, Tellus B, 59, 577–586, 2007.

Gu, L., Falge, E. M., Boden, T., Baldocchi, D. D., Black, T. A., Saleska, S. R., Suni, T., Verma, S. B., Vesala, T., Wofsy, S. C., and Xu, L.: Objective threshold determination for nighttime eddy flux filtering, Agr. Forest Meteorol., 128, 179–197, 2005.

Hasager, C. B. and Jensen, N. O.: Surface-flux aggregation in heterogeneous terrain, Q. J. Roy. Meteorol. Soc., 125, 2075–2102, 1999.

Hibbard, K. A., Law, B. E., Reichstein, M., and Sulzman, J.: An analysis of soil respiration across northern hemisphere temperate ecosystems, Biogeochemistry, 73, 29–70, 2005.

Horst, T. W. and Weil, J. C.: How far is far enough – the fetch requirements for micrometeorological measurement of surface fluxes, J. Atmos. Ocean. Tech., 11, 1018–1025, 1994.

Ibrom, A., Dellwik, E., Flyvbjerg, H., Jensen, N. O., and Pilegaard, K.: Strong low-pass filtering effects on water vapour flux measurements with closed-path eddy correlation systems, Agr. Forest Meteorol., 147, 140–156, 2007.

Jegede, O. O. and Foken, T.: A study of the internal boundary layer due to a roughness change in neutral conditions observed during the LINEX field campaigns, Theor. Appl. Climatol., 62, 31–41, 1999.

Kaimal, J. C. and Finnigan, J. J.: Atmospheric Boundary Layer Flows: Their Structure and Measurement, Oxford University Press, New York, 289 pp, 1994.

Kim, J., Guo, Q., Baldocchi, D. D., Leclerc, M., Xu, L., and Schmid, H. P.: Upscaling fluxes from tower to landscape: Overlaying flux footprints on high-resolution (IKONOS) images of vegetation cover, Agr. Forest Meteorol., 136, 132–146, 2006.

Klaassen, W., van Breugel, P. B., Moors, E. J., and Nieveen, J. P.: Increased heat fluxes near a forest edge, Theor. Appl. Climatol., 72, 231–243, 2002.

Kljun, N., Rotach, M. W., and Schmid, H. P.: A Three-Dimensional Backward Lagrangian Footprint Model For A Wide Range Of Boundary-Layer Stratifications, Bound.-Lay. Meteorol., 103, 205–226, 2002.

Law, B. E., Falge, E., Gu, L., Baldocchi, D. D., Bakwin, P., Berbigier, P., Davis, K., Dolman, A. J., Falk, M., Fuentes, J. D., Goldstein, A., Granier, A., Grelle, A., Hollinger, D., Janssens, I. A., Jarvis, P., Jensen, N. O., Katul, G., Malhi, Y., Matteucci, G., Meyers, T., Monson, R., Munger, W., Oechel, W., Olson, R., Pilegaard, K., Paw U, K. T., Thorgeirsson, H., Valentini, R., Verma, S., Vesala, T., Wilson, K., and Wofsy, S.: Environmental controls over carbon dioxide and water vapor exchange of terrestrial vegetation, Agr. Forest Meteorol., 113, 97–120, 2002.

Law, B. E.: Carbon dynamics in response to climate and disturbance: recent progress from multiscale measurements and modeling in AmeriFlux, in: Plant Responses to Air Pollution and Global Change, edited by: Omasa, K., Nouchi, I., and De Kok, L. J., Springer, Tokyo, pp. 205–213, 2005.

Leclerc, M. Y., Shen, S., and Lamb, B.: Observations and large-eddy simulation modeling of footprints in the lower convective boundary layer, J. Geophys. Res., 102, 9323–9334, 1997.

Leclerc, M. Y., Karipot, A., Prabha, T., Allwine, G., Lamb, B., and Gholz, H. L.: Impact of non-local advection on flux footprints over a tall forest canopy: a tracer flux experiment, Agr. Forest Meteorol., 115, 19–30, 2003.

Lee, X., Yu, Q., Sun, X., Liu, J., Min, Q., Liu, Y., and Zhang, X.: Micrometeorological fluxes under the influence of regional and local advection: a revisit, Agr. Forest Meteorol., 122, 111–124, 2004.

Liu, H. P., Peters, G., and Foken, T.: New equations for sonic temperature variance and buoyancy heat flux with an omnidirectional sonic anemometer, Bound.-Lay. Meteorol., 100, 459–468, 2001.

Markkanen, T., Rannik, Ü., Marcolla, B., Cescatti, A., and Vesala, T.: Footprints and fetches for fluxes over forest canopies with varying structure and density, Bound.-Lay. Meteorol., 106, 437–459, 2003.

Massman, W. J. and Lee, X.: Eddy covariance flux corrections and uncertainties in long-term studies of carbon and energy exchanges, Agr. Forest Meteorol., 113, 121–144, 2002.

Mauder, M., Liebethal, C., Göckede, M., Leps, J. P., Beyrich, F., and Foken, T.: Processing and quality control of flux data during LITFASS-2003, Bound.-Lay. Meteorol., 121, 67–88, 2006.

Mauder, M., Oncley, S. P., Vogt, R., Weidinger, T., Ribeiro, L., Bernhofer, C., Foken, T., Kohsiek, W., De Bruin, H. A. R., and Liu, H.: The energy balance experiment EBEX-2000. Part II: Intercomparison of eddy-covariance sensors and post-field data processing methods, Bound.-Lay. Meteorol., 123, 29–54, 2007.

Mauder, M., Foken, T., Bernhofer, C., Clement, R., Elbers, J., Eugster, W., Grünwald, T., Heusinkveld, B., and Kolle, O.: Quality control of CarboEurope flux data – Part~2: Inter-comparison of eddy-covariance software, Biogeosciences, 5, 451–462, 2008.

Moore, C. J.: Frequency response corrections for eddy correlation systems, Bound.-Lay. Meteorol., 37, 17–35, 1986.

Nagy, M. T., Janssens, I. A., Curiel Yuste, J., Carrara, A., and Ceulemans, R.: Footprint-adjusted net ecosystem CO2 exchange and carbon balance components of a temperate forest, Agr. Forest Meteorol., 139, 344–360, 2006.

Obukhov, A. M.: O strukture temperaturnogo polja i polja skorostej v uslovijach konvekcii, Izv. AN SSSR, ser. Geofiz., 1392–1396, 1960.

Panin, G. N., Tetzlaff, G., and Raabe, A.: Inhomogeneity of the land surface and problems in the parameterization of surface fluxes in natural conditions, Theor. Appl. Climatol., 60, 163–178, 1998.

Panin, G. N. and Tetzlaff, G.: A measure of inhomogeneity of the land surface and parametrization of turbulent fluxes under natural conditions, Theor. Appl. Climatol., 62, 3–8, 1999.

Panofsky, H. A., Tennekes, H., Lenschow, D. H., and Wyngaard, J. C.: The characteristics of turbulent velocity components in the surface layer under convective conditions, Bound.-Lay. Meteorol., 11, 355–361, 1977.

Papale, D., Reichstein, M., Aubinet, M., Canfora, E., Bernhofer, C., Kutsch, W., Longdoz, B., Rambal, S., Valentini, R., Vesala, T., and Yakir, D.: Towards a standardized processing of Net Ecosystem Exchange measured with eddy covariance technique: algorithms and uncertainty estimation, Biogeosciences, 3, 571–583, 2006.

Rannik, Ü., Aubinet, M., Kurbanmuradov, O., Sabelfeld, K. K., Markkanen, T., and Vesala, T.: Footprint analysis for measurements over a heterogeneous forest, Bound.-Lay. Meteorol., 97, 137–166, 2000.

Rannik, Ü., Markkanen, T., Raittila, J., Hari, P., and Vesala, T.: Turbulence statistics inside and over forest: Influence on footprint prediction, Bound.-Lay. Meteorol., 109, 163–189, 2003.

Rebmann, C., Göckede, M., Foken, T., Aubinet, M., Aurela, M., Berbigier, P., Bernhofer, C., Buchmann, N., Carrara, A., Cescatti, A., Ceulemans, R., Clement, R., Elbers, J. A., Granier, A., Grünwald, T., Guyon, D., Havrankova, K., Heinesch, B., Knohl, A., Laurila, T., Longdoz, B., Marcolla, B., Markkanen, T., Miglietta, F., Moncrieff, J., Montagnani, L., Moors, E., Nardino, M., Ourcival, J.-M., Rambal, S., Rannik, Ü., Rotenberg, E., Sedlak, P., Unterhuber, G., Vesala, T., and Yakir, D.: Quality analysis applied on eddy covariance measurements at complex forest sites using footprint modelling, Theor. Appl. Climatol., 80, 121–141, 2005.

Reichstein, M., Ciais, P., Papale, D., Valentini, R., Running, S., Viovy, N., Cramer, W., Granier, A., Ogee, J., Allard, V., Aubinet, M., Bernhofer, C., Buchmann, N., Carrara, A., Grünwald, T., Heimann, M., Heinesch, B., Knohl, A., Kutsch, W., Loustau, D., Manca, G., Matteucci, G., Miglietta, F., Ourcival, J. M., Pilegaard, K., Pumpanen, J., Rambal, S., Schaphoff, S., Seufert, G., Soussana, J. F., Sanz, M. J., Vesala, T., and Zhao, M.: Reduction of ecosystem productivity and respiration during the European summer 2003 climate anomaly: a joint flux tower, remote sensing and modelling analysis, Global Change Biol., 13, 634–651, 2007a.

Reichstein, M., Papale, D., Valentini, R., Aubinet, M., Bernhofer, C., Knohl, A., Laurila, T., Lindroth, A., Moors, E., Pilegaard, K., and Seufert, G.: Determinants of terrestrial ecosystem carbon balance inferred from European eddy covariance flux sites, Geophys. Res. Lett., 34, L01402, https://doi.org/10.1029/2006GL027880, 2007b.

Schmid, H. P. and Oke, T. R.: Estimating the source area of a turbulent flux measurement over a patchy surface, in: Proceedings of the 8th Symposium on Turbulence and Diffusion, Boston, MA, American Meteorological Society, pp. 123–126, 1988.

Schmid, H. P.: Source areas for scalars and scalar fluxes, Bound.-Lay. Meteorol., 67, 293–318, 1994.

Schmid, H. P.: Experimental design for flux measurements: matching scales of observations and fluxes, Agr. Forest Meteorol., 87, 179–200, 1997.

Schmid, H. P. and Lloyd, C. R.: Spatial representativeness and the location bias of flux footprints over inhomogeneous areas, Agr. Forest Meteorol., 93, 195–209, 1999.

Schmid, H. P.: Footprint modeling for vegetation atmosphere exchange studies: a review and perspective, Agr. Forest Meteorol., 113, 159–183, 2002.

Schuepp, P. H., Leclerc, M. Y., MacPherson, J. I., and Desjardins, R. L.: Footprint prediction of scalar fluxes from analytical solutions of the diffusion equation, Bound.-Lay. Meteorol., 50, 355–373, 1990.

Siebicke, L.: Energie- und Kohlendioxidaustauschmessungen in einer Korkeichensavanne, Diploma Thesis, Department of Micrometeorology, University of Bayreuth, Bayreuth, 130 pp, 2007.

Thomas, C. and Foken, T.: Re-evaluation of Integral Turbulence Characteristics and their Parameterisations, in: Proceedings of the 15th Symposium on Boundary Layers and Turbulence, Wageningen, The Netherlands, American Meteorological Society, pp. 129–132, 2002.

Thomson, D. J.: Criteria for the selection of stochastic models of particle trajectories in turbulent flows, J. Fluid Mech., 180, 529–556, 1987.

Valentini, R., Matteucci, G., Dolman, A. J., Schulze, E.-D., Rebmann, C., Moors, E. J., Granier, A., Gross, P., Jensen, N. O., Pilegaard, K., Lindroth, A., Grelle, A., Bernhofer, C., Grünwald, T., Aubinet, M., Ceulemans, R., Kowalski, A. S., Vesala, T., Rannik, Ü., Berbigier, P., Loustau, D., Guomundsson, J., Thorgeirsson, H., Ibrom, A., Morgenstern, K., Clement, R., Moncrieff, J., Montagnani, L., Minerbi, S., and Jarvis, P. G.: Respiration as the main determinant of carbon balance in European forests, Nature, 404, 861–865, 2000.

Wang, Y. P., Baldocchi, D., Leuning, R., Falge, E., and Vesala, T.: Estimating parameters in a land-surface model by applying nonlinear inversion to eddy covariance flux measurements from eight FLUXNET sites, Global Change Biol., 13, 652–670, 2007.

Webb, E. K., Pearman, G. I., and Leuning, R.: Correction of flux measurements for density effects due to heat and water vapour transfer, Q. J. Roy. Meteorol. Soc., 106, 85–100, 1980.

Wilczak, J. M., Oncley, S. P., and Stage, S. A.: Sonic anemometer tilt correction algorithms, Bound.-Lay. Meteorol., 99, 127–150, 2001.

Wilson, J. D., Legg, B. J., and Thomson, D. J.: Calculation of particle trajectories in the presence of a gradient in turbulent-velocity variance, Bound.-Lay. Meteorol., 27, 163–169, 1983.

Wilson, J. D. and Sawford, B. L.: Review of Lagrangian stochastic models for trajectories in the turbulent atmosphere, Bound.-Lay. Meteorol., 78, 191–210, 1996.

Wilson, K. B., Baldocchi, D. D., Aubinet, M., Berbigier, P., Bernhofer, C., Dolman, H., Falge, E., Field, C., Goldstein, A., Granier, A., Grelle, A., Halldor, T., Hollinger, D., Katul, G., Law, B. E., Lindroth, A., Meyers, T., Moncrieff, J., Monson, R., Oechel, W., Tenhunen, J., Valentini, R., Verma, S., Vesala, T., and Wofsy, S.: Energy partitioning between latent and sensible heat flux during the warm season at FLUXNET sites, Water Resour. Res., 38, 1294, https://doi.org/10.1029/2001WR000989, 2002.

Wyngaard, J. C., Coté, O. R., and Izumi, Y.: Local free convection, similarity and the budgets of shear stress and heat flux, J. Atmos. Sci., 28, 1171–1182, 1971.

Yuan, W., Liu, S., Zhou, G., Zhou, G., Tieszen, L. L., Baldocchi, D., Bernhofer, C., Gholz, H., Goldstein, A. H., Goulden, M. L., Hollinger, D. Y., Hu, Y., Law, B. E., Stoy, P. C., Vesala, T., and Wofsy, S. C.: Deriving a light use efficiency model from eddy covariance flux data for predicting daily gross primary production across biomes, Agr. Forest Meteorol., 143, 189–207, 2007.

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Biogeosciences

Tập 5 Số 2

433-450

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