Articles | Volume 24, issue 7
https://doi.org/10.5194/hess-24-3871-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-24-3871-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Technical note
| 
30 Jul 2020
Technical note |
| 30 Jul 2020
| 30 Jul 2020
A Fast-Response Automated Gas Equilibrator (FaRAGE) for continuous in situ measurement of CH4 and CO2 dissolved in water
Shangbin Xiao
College of Hydraulic & Environmental Engineering, China Three Gorges University, 443002 Yichang, China
Department of Experimental Limnology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, 16775 Stechlin, Germany
Wei Wang
College of Hydraulic & Environmental Engineering, China Three Gorges University, 443002 Yichang, China
Andreas Lorke
College of Hydraulic & Environmental Engineering, China Three Gorges University, 443002 Yichang, China
Institute for Environmental Sciences, University of Koblenz-Landau, 76829 Landau, Germany
Jason Woodhouse
Department of Experimental Limnology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, 16775 Stechlin, Germany
Hans-Peter Grossart
CORRESPONDING AUTHOR
Department of Experimental Limnology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, 16775 Stechlin, Germany
Institute of Biochemistry and Biology, Potsdam University, 14669 Potsdam, Germany
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- Drivers of spatial and seasonal variations of CO2 and CH4 fluxes at the sediment water interface in a shallow eutrophic lake H. Sun et al. https://doi.org/10.1016/j.watres.2022.118916
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- Strong Subseasonal Variability of Oxic Methane Production Challenges Methane Budgeting in Freshwater Lakes L. Liu et al. https://doi.org/10.1021/acs.est.4c07413
- Automated CO2 and CH4 monitoring system for continuous estimation of degassing related to hydropower C. Deblois et al. https://doi.org/10.3389/fenvs.2023.1194994
- Salinity decreases methane concentrations in Chinese lakes H. Liu et al. https://doi.org/10.1016/j.scitotenv.2024.173412
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- A new algorithm based on the bubbling method for rapid measurement of carbon dioxide concentration in water C. Zu et al. https://doi.org/10.1007/s10661-026-15513-9
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- Monitoring and analysis of CO<sub>2</sub> and CH<sub>4</sub> fluxes in the Three Gorges Reservoir L. Zhe et al. https://doi.org/10.18307/2023.0205
- Minor water-level fluctuations strongly modulate air–water diffusive CH4 flux in a tributary bay of the Three Gorges Reservoir J. Meng et al. https://doi.org/10.1016/j.watres.2026.126815
- Spatial and temporal variability of dissolved methane concentrations and diffusive emissions in the Three Gorges Reservoir J. Liu et al. https://doi.org/10.1016/j.watres.2021.117788
- Systematical δ13C investigations of TOC in aquatic plants, DIC and dissolved CO2 in lake water from three Tibetan Plateau lakes H. Liu et al. https://doi.org/10.1016/j.ecolind.2022.109060
- High-frequency continuous measurements reveal strong diel and seasonal cycling of pCO2 and CO2 flux in a mesohaline reach of the Chesapeake Bay A. Miller et al. https://doi.org/10.5194/bg-21-3717-2024
- In situ acoustic quantification of methane ebullition in Xiangxi Bay, Three Gorges Reservoir C. Wei et al. https://doi.org/10.1007/s10661-025-14849-y
- Shifts in the high-resolution spatial distribution of dissolved N2O and the underlying microbial communities and processes in the Pearl River Estuary X. Cheng et al. https://doi.org/10.1016/j.watres.2023.120351
Saved (final revised paper)
Latest update: 08 Nov 2026
Short summary
To better understand the fate of methane (CH4) and carbon dioxide (CO2) in freshwaters, dissolved CH4 and CO2 need to be measured with a high temporal resolution. We developed the Fast-Response Automated Gas Equilibrator (FaRAGE) for real-time in situ measurement of dissolved gases in water. FaRAGE can achieve a short response time (CH4:
t95 % = 12 s; CO2:
t95 % = 10 s) while retaining a high equilibration ratio and accuracy.
To better understand the fate of methane (CH4) and carbon dioxide (CO2) in freshwaters,...
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