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 verfied for data of a rewetted former fen grassland site.