Articles | Volume 14, issue 6
Biogeosciences, 14, 1603–1616, 2017
https://doi.org/10.5194/bg-14-1603-2017
Biogeosciences, 14, 1603–1616, 2017
https://doi.org/10.5194/bg-14-1603-2017

Research article 28 Mar 2017

Research article | 28 Mar 2017

Overestimation of closed-chamber soil CO2 effluxes at low atmospheric turbulence

Andreas Brændholt et al.

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Latest update: 21 Apr 2021
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Short summary
In this study we found that CO2 fluxes from soil measured by the closed-chamber technique were overestimated during low atmospheric turbulence. This resulted in biased courses of CO2 fluxes during a day. We removed CO2 fluxes measured at low turbulence, which gave better flux estimates. We furthermore tested a novel technique that provided good measurement during low turbulence, thereby giving better estimates of CO2 emissions from soils, which is a crucial part of the global carbon cycle.
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