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Article

Gas Pressure Dynamics in Small and Mid-Size Lakes

1
Helmholtz-Centre for Environmental Research—UFZ, 39114 Magdeburg, Germany
2
Leibniz-Institute of Freshwater Ecology and Inland Fisheries—IGB, 12587 Berlin, Germany
3
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
4
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
5
Institute for Environmental Physics, University Heidelberg, 69120 Heidelberg, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Lars Bengtsson
Water 2021, 13(13), 1824; https://doi.org/10.3390/w13131824
Received: 1 June 2021 / Revised: 14 June 2021 / Accepted: 18 June 2021 / Published: 30 June 2021
(This article belongs to the Special Issue Physical Processes in Lakes)
Dissolved gases produce a gas pressure. This gas pressure is the appropriate physical quantity for judging the possibility of bubble formation and hence it is central for understanding exchange of climate-relevant gases between (limnic) water and the atmosphere. The contribution of ebullition has widely been neglected in numerical simulations. We present measurements from six lacustrine waterbodies in Central Germany: including a natural lake, a drinking water reservoir, a mine pit lake, a sand excavation lake, a flooded quarry, and a small flooded lignite opencast, which has been heavily polluted. Seasonal changes of oxygen and temperature are complemented by numerical simulations of nitrogen and calculations of vapor pressure to quantify the contributions and their dynamics in lacustrine waters. In addition, accumulation of gases in monimolimnetic waters is demonstrated. We sum the partial pressures of the gases to yield a quantitative value for total gas pressure to reason which processes can force ebullition at which locations. In conclusion, only a small number of gases contribute decisively to gas pressure and hence can be crucial for bubble formation. View Full-Text
Keywords: dissolved gas; Henry law; total gas pressure; ebullition; greenhouse gases; lacustrine waters dissolved gas; Henry law; total gas pressure; ebullition; greenhouse gases; lacustrine waters
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MDPI and ACS Style

Boehrer, B.; Jordan, S.; Leng, P.; Waldemer, C.; Schwenk, C.; Hupfer, M.; Schultze, M. Gas Pressure Dynamics in Small and Mid-Size Lakes. Water 2021, 13, 1824. https://doi.org/10.3390/w13131824

AMA Style

Boehrer B, Jordan S, Leng P, Waldemer C, Schwenk C, Hupfer M, Schultze M. Gas Pressure Dynamics in Small and Mid-Size Lakes. Water. 2021; 13(13):1824. https://doi.org/10.3390/w13131824

Chicago/Turabian Style

Boehrer, Bertram, Sylvia Jordan, Peifang Leng, Carolin Waldemer, Cornelis Schwenk, Michael Hupfer, and Martin Schultze. 2021. "Gas Pressure Dynamics in Small and Mid-Size Lakes" Water 13, no. 13: 1824. https://doi.org/10.3390/w13131824

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