Articles | Volume 9, issue 3
Atmos. Meas. Tech., 9, 1361–1367, 2016
https://doi.org/10.5194/amt-9-1361-2016
Atmos. Meas. Tech., 9, 1361–1367, 2016
https://doi.org/10.5194/amt-9-1361-2016

Research article 31 Mar 2016

Research article | 31 Mar 2016

Dimensioning IRGA gas sampling systems: laboratory and field experiments

Marc Aubinet et al.

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Cited articles

Aubinet, M., Chermanne, B., Vandenhaute, M., Longdoz, B., Yernaux, M., and Laitat, E.: Long term carbon dioxide exchange above a mixed forest in the Belgian Ardennes, Agric. For. Meteorol., 108, 293–315, 2001.
Baldocchi, D.: Measuring fluxes of trace gases and energy between ecosystems and the atmosphere – the state and future of the eddy covariance method, Glob. Change Biol., 20, 3600–3609, 2014.
Ciais, P., Paris, J. D., and Rivier, L.: How to estimate greenhouse gases fluxes and associated uncertainties by using atmospheric measurements of the European ICOS network, Pollution Atmosphérique, Special issue: “Retour aux sources: La recherche et l'identification des sources de pollution”, 59–62, 2010.
Short summary
Laboratory and field experiments were carried out in order to define suitable configuration ranges for the gas sampling systems of infrared gas analyzers used in eddy covariance measurements. They show that filters may have a strong impact on the pressure drop in the GSS but no significant impact on cut-off frequency. Conversely, the rain cup design was found to be the main limiting factor of cut-off frequency in the field. Its impact on pressure drop was also found to be noteworthy.