Articles | Volume 9, issue 9
Research article
21 Sep 2016
Research article |  | 21 Sep 2016

Optimal use of buffer volumes for the measurement of atmospheric gas concentration in multi-point systems

Alessandro Cescatti, Barbara Marcolla, Ignacio Goded, and Carsten Gruening

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Cited articles

Andrews, A. E., Kofler, J. D., Trudeau, M. E., Williams, J. C., Neff, D. H., Masarie, K. A., Chao, D. Y., Kitzis, D. R., Novelli, P. C., Zhao, C. L., Dlugokencky, E. J., Lang, P. M., Crotwell, M. J., Fischer, M. L., Parker, M. J., Lee, J. T., Baumann, D. D., Desai, A. R., Stanier, C. O., De Wekker, S. F. J., Wolfe, D. E., Munger, J. W., and Tans, P. P.: CO2, CO, and CH4 measurements from tall towers in the NOAA Earth System Research Laboratory's Global Greenhouse Gas Reference Network: instrumentation, uncertainty analysis, and recommendations for future high-accuracy greenhouse gas monitoring efforts, Atmos. Meas. Tech., 7, 647–687,, 2014.
Griffith, D. W. T., Bryant, G. R., Hsu, D., and Reisinger, A. R.: Methane Emissions from Free-Ranging Cattle: Comparison of Tracer and Integrated Horizontal Flux Techniques, J. Environ. Qual., 37, 582–591,, 2008.
Heinesch, B., Yernaux, M., and Aubinet, M.: Some methodological questions concerning advection measurements: a case study, Bound.-Lay. Meteorol., 122, 457–478,, 2007.
Leuning, R., Zegelin, S. J., Jones, K., Keith, H., and Hughes, D.: Measurement of horizontal and vertical advection of CO2 within a forest canopy, Agr. Forest Meteorol., 148, 1777–1797,, 2008.
Short summary
Multi-point monitoring systems are required to measure atmospheric gas concentrations at tall towers and eddy covariance sites. The use of buffer volumes can reduce the uncertainty due to the discrete temporal sampling. We propose a processing scheme that accounts for the fraction of signal built up in the averaging period and reduces the error up to 80 % compared to the standard setup. A relationship is derived to estimate the optimal volume size given the specifications of the sampling system.