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. 2021 Jun 14;118(25):e2026004118. doi: 10.1073/pnas.2026004118

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Copyright © 2021 the Author(s). Published by PNAS.

This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND).

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Fig. 4. — Carbopeaking is caused by hydropeaking and fluctuations of CO₂ dissolved concentration. (A and B) Hourly water discharge (Q) and calculated CO₂ concentration and flux during two specific days of the year: during Kariba’s reservoir stratified season (12 February 2019) and during its mixed phase (25 July 2019). (C) Mean monthly carbopeaking absolute values (hourly variations of CO₂ atmospheric emission) together with the contribution of hydropeaking and concentration to the respective monthly carbopeaking value. (D) Monthly relative contributions of hydropeaking and concentration to carbopeaking.