Articles | Volume 15, issue 10
Biogeosciences, 15, 3093–3106, 2018
https://doi.org/10.5194/bg-15-3093-2018
Biogeosciences, 15, 3093–3106, 2018
https://doi.org/10.5194/bg-15-3093-2018

Research article 18 May 2018

Research article | 18 May 2018

Groundwater data improve modelling of headwater stream CO2 outgassing with a stable DIC isotope approach

Anne Marx et al.

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Latest update: 03 Dec 2021
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Short summary
CO2 outgassing from small streams causes one of the main uncertainties in global carbon budgets. These are caused by variable flow conditions, changing stream surface areas, and groundwater seeps. Here we used groundwater data to improve a novel stable carbon isotope modelling approach. We found that CO2 outgassing contributed more than three-fourths of annual stream inorganic carbon loss in a small, silicate catchment. We underline the potential of this approach for global applications.
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