Articles | Volume 9, issue 3
https://doi.org/10.5194/amt-9-1361-2016
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, Lilian Joly, Denis Loustau, Anne De Ligne, Henri Chopin, Julien Cousin, Nicolas Chauvin, Thomas Decarpenterie, and Patrick Gross

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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.