Significant non-linearity in nitrous oxide chamber data and its effect on calculated annual emissions

P. C. Stolk, C. M. J. Jacobs, E. J. Moors, A. Hensen, G. L. Velthof, P. Kabat
2009 Biogeosciences Discussions  
Chambers are widely used to measure surface fluxes of nitrous oxide (N 2 O). Usually linear regression is used to calculate the fluxes from the chamber data. Non-linearity in the chamber data can result in an underestimation of the flux. Non-linear regression models are available for these data, but are not commonly used. In this study we 5 20 sion model should be used if the fit is significantly better. Open questions are how macropores affect chamber measurements and how optimization of chamber design can prevent this.
doi:10.5194/bgd-6-115-2009 fatcat:v7s47vgiefb55crng42qufd7qq