Articles | Volume 10, issue 1
Atmos. Meas. Tech., 10, 109–118, 2017
Atmos. Meas. Tech., 10, 109–118, 2017

Research article 06 Jan 2017

Research article | 06 Jan 2017

A simple calculation algorithm to separate high-resolution CH4 flux measurements into ebullition- and diffusion-derived components

Mathias Hoffmann et al.

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Cited articles

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Chanton, J. P. and Whiting, G. J.: Trace gas exchange in freshwater and coastel marine environments: ebullition and transport by plants, in: Biogenic trace gases: measuring emissions from soil and water, chap. 4, edited by: Matson, P. A. and Hariss, R. C., Blackwell Science Ltd., UK, 98–125, 1995.
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Short summary
Processes driving production and transport of CH4 in wetlands are complex. We present an algorithm to separate open-water automatic chamber CH4 fluxes into diffusion and ebullition. This helps to reveal dynamics, identify drivers and obtain reliable CH4 emissions. The algorithm is based on sudden concentration changes during single measurements. A variable filter is applied using a multiple of the interquartile range. The algorithm was verified for data of a rewetted former fen grassland site.