Measurements of soil carbon dioxide efflux provide critical information on soil carbon balance. In light of increasing interest in monitoring carbon balance of northern soils, it is important that we develop new methodologies that are better suited to long-term, remote, and off-grid deployments. In this study, we describe a Forced Diffusion (FD) dynamic chamber, in which a gas permeable membrane passively regulates mixing of atmosphere and soil air in the chamber, in place of the active pumping system inside a regular dynamic efflux chamber system.

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