Abstract
The theoretical correction of CO2 fluxes for high frequency attenuation in closed-path systems was re-summarized and its applicability examined using both measurements obtained at an Asiaflux forest site and empirical transfer functions used in previous studies. For our measurement system, the theoretical transfer function was applicable to high frequency correction, even when condensation occurred in the sampling line. Further, in respect to some measurement systems described in previous studies, it was found that the theoretical function was potentially applicable along with the empirical functions used. Meanwhile, in some systems significant errors could not be resolved by re-estimation of the theories. In these systems, because of undefined buffering effects, the actual response lag time decided by the maximum covariance method or by measurement of the system response time using tracer gas was significantly different from the lag time calculated from the tube dimensions and the measured flow rate. If the average flow rate calculated by the actual lag time was used to determine the theoretical function, the theoretical function became closer to, and sometimes agreed with, the empirical function. Any remaining deviation from each function might be associated with pressure fluctuations, but this problem was unable to be examined here. The results suggested that an empirical formulation for each site is considered applicable rather than a theoretical approach, although the theories are being developed to practical application.
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Aubinet M, Berbigier P, Bernhofer CH, Cescatti A, Feigenwinter C, Granier A, Grünwald TH, Havrankova K, Heinesch B, Longdoz B, Marcolla B, Montagnani L, Sedlak P (2005) Comparing CO2 storage and advection conditions at night at different CARBOEUROFLUX sites. Boundary-Layer Meteorol 116:63–94
Aubinet M, Chermanne B, Vandenhaute M, Longdoz B, Yernaux M, Laitat E (2001) Long term carbon dioxide exchange above a mixed forest in belgian ardennes. Agric For Meteorol 108:293–315
Aubinet M, Grelle A, Ibrom A, Rannik Ü, Moncrieff J, Foken T, Kowalski AS, Martin PH, Berbigier P, Bernhofer Ch, Clement R, Elbers JA, Granier A, Grünwald T, Morgenstern K, Pilegaard K, Rebmann C, Snijders W, Valentini R, Vesala T (2000) Estimates of the annual net carbon and water exchange of forests: the EUROFLUX methodology. Adv Ecol Res 30:113–175
Baldocchi D, Falge E, Gu L, Olson R, Hollinger D, Running S, Anthoni P, Bernhofer Ch, Davis K, Evans R, Fuentes J, Goldstein A, Katul G, Law B, Lee X, Malhi Y, Meyers T, Munger W, Oechel W, PawU KT, Pilegaard K, Schmid HP, Valentini R, Verma S, Vesala T, Wilson K, Wofsy S (2001) FLUXNET: a new tool to study the temporal and spatial variability of ecosystem-scale carbon dioxide, water vapor and energy flux densities. Bull Amer Meteorol Soc 82:2415–2435
Berger BW, Davis KJ, Yi C, Bakwin PS, Zhao C-L (2001) Long-term carbon dioxide fluxes from a very tall tower in a northern forest: flux measurement methodology. J Atmos Ocean Tech 18:529–542
Brutsaert W (1992) Stability correction functions for the mean wind speed and temperature in the unstable surface layer. Geophys Res Lett 19:469–472
Cook BD, Davis KJ, Wang W, Desai A, Berger BW, Teclaw RM, Martin JG, Bolstad PV, Bakwin PS, Yi C, Heilman W (2004) Carbon exchange and venting anomalies in an upland deciduous forest in Northern Wisconsin, USA. Agric For Meteorol 126:271–295
Dyer AJ (1974) A review of flux-profile relationships. Boundary-Layer Meteorol 7:363–372
Finnigan J (1999) A comment on the paper by Lee (1998): “On micrometeorological observation of surface-air exchange over tall vegetation”. Agric For Meteorol 97:55–64
Goulden ML, Daube BC, Fan S-M, Sutton DJ, Bazzaz A, Munger JW, Wofsy SC (1997) Physiological responses of a black spruce forest to weather. J Geophys Res 102(D24):28987–28996
Horst TW (1997) A simple formula for attenuation of eddy fluxes measured with first-order response scalar sensors. Boundary-Layer Meteorol 82:219–233
Horst TW (2000) On frequency response corrections for eddy covariance flux measurements. Boundary-Layer Meteorol 94:517–520
Hollinger DY, Goltz SM, Davidson EA, Lee T-J, Tu K, Valentine HT (1999) Seasonal patterns and environmental control of carbon dioxide and water vapor in an ecotonal boreal forest. Global Change Biol 5:891–902
Kaimal JC, Wyngaard JC, Haugen DA (1968) Deriving power spectra from a three-component sonic anemometer. J Appl Meteorol 7:827–834
Kristensen L, Mann J, Oncley SP, Wyngaard JC (1997) How close is close enough when measuring scalar fluxes with displaced sensors? J Atmos Ocean Tech 14:814–821
Kristensen L, Jensen NO (1979) Lateral coherence in isotropic turbulence and in the natural wind. Boundary-Layer Meteorol 17:353–373
Lee X, Black TA (1994) Relating eddy correlation sensible heat flux to horizontal sensor separation in the unstable atmospheric surface layer. J Geophys Res 99(D9):18545–18553
Lee X (1998) On micrometeorological observation of surface-air exchange over tall vegetation. Agric For Meteorol 91:29–49
Lenschow DH, Raupach MR (1991) The attenuation of fluctuations in scalar concentration through sampling tubes. J Geophys Res 96(D8):15259–15268
Leuning R, King KM (1992) Comparison of eddy-covariance measurements of CO2 fluxes by open- and closed-path CO2 analysers. Boundary-Layer Meteorol 59:297–311
Leuning R, Judd MJ (1996) The relative merits of open- and closed-path analysers for measurement of eddy fluxes. Global Change Biol 2:241–254
Malhi Y, Pegoraro E, Nobre AD, Pereira MGP, Grace J, Culf AD, Clement R (2002) The energy and water dynamics of a Central Amazonian rain forest. J Geophys Res 107(D20):8061, doi:10.1029/2001JD000623
Massman WJ (1991) The attenuation of concentration fluctuations in turbulent-flow through a tube. J Geophys Res 96(D8):15269–15273
Massman WJ (2000) A simple method for estimating frequency response corrections for eddy covariance systems. Agric For Meteorol 104:185–198
Massman WJ (2004) Concerning the measurement of atmospheric trace gas fluxes with open- and closed-path eddy covariance systems: the WPL terms and spectral attenuation. In: Lee X, Massman WJ, Law B (eds) Handbook of micrometeorology. Kluwer Academic Publishers, Dordrecht, pp 133–160
Massman WJ, Lee X (2002) Eddy covariance flux corrections and uncertainties in long-term studies of carbon and energy exchanges. Agric For Meteorol 113:121–144
Moncrieff JB, Massheder JM, De Bruin H, Elbers J, Friborg T, Heusinkveld B, Kabat P, Scott S, Soegaard H, Verhoef A (1997) A system to measure surface fluxes of momentum, sensible heat, water vapour and carbon dioxide. J Hydrol 188–189:589–611
Moore CJ (1986) Frequency response corrections for eddy correlation systems. Boundary-Layer Meteorol 37:17–35
Sakai RK, Fitzjarrald DR, Moore KE (2001) Importance of low-frequency contributions to eddy fluxes observed over rough surfaces. J Appl Meteorol 40:2178–2192
Schmid HP, Su H-B, Vogel CS, Curtis PS (2003) Ecosystem–atmosphere exchange of carbon dioxide over a mixed hardwood forest in Northern Lower Michigan. J Geophys Res 108(D14):4417, doi:10.1029/2002JD003011
Shimizu A, Shimizu T, Miyabuchi Y, Ogawa Y (2003) Evapotranspiration and runoff in a forested watershed, Western Japan. Hydrol Proc 17:3125–3139
Shimizu T, Suzuki M, Shimizu A (1999) Examination of a correction procedure for the flow attenuation in orthogonal sonic anemometers. Boundary-Layer Meteorol 93:227–236
Su H-B, Schmid HP, Grimmond CSB, Vogel CS, Oliphant AJ (2004) Spectral characteristics and correction of long-term eddy-covariance measurements over two mixed hardwood forests in non-flat terrain. Boundary-Layer Meteorol 110:213–253
Watanabe T, Yamanoi K, Yasuda Y (2000) Testing of the eddy covariance method for a long-term measurement of water vapour flux over a forest. Boundary-Layer Meteorol 96:473–491
Webb EK, Pearman GI, Leuning R (1980) Correction of flux measurements for density effects due to heat and water vapor transfer. Quart J Roy Meteorol Soc 106:85–100
Yasuda Y, Watanabe T (2001) Comparative measurements of CO2 flux over a forest using closed-path and open-path CO2 analysers. Boundary-Layer Meteorol 100:191–208
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Shimizu, T. Practical applicability of high frequency correction theories to CO2 flux measured by a closed-path system. Boundary-Layer Meteorol 122, 417–438 (2007). https://doi.org/10.1007/s10546-006-9115-z
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DOI: https://doi.org/10.1007/s10546-006-9115-z