Gas pressure dynamics in small and mid-size 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 wi...
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| Main Authors: | , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
30 June 2021
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| In: |
Water
Year: 2021, Volume: 13, Issue: 13, Pages: 1-20 |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w13131824 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/w13131824 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/2073-4441/13/13/1824 
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| Author Notes: | Bertram Boehrer, Sylvia Jordan, Peifang Leng, Carolin Waldemer, Cornelis Schwenk, Michael Hupfer and Martin Schultze |
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| 245 | 1 | 0 | |a Gas pressure dynamics in small and mid-size lakes |c Bertram Boehrer, Sylvia Jordan, Peifang Leng, Carolin Waldemer, Cornelis Schwenk, Michael Hupfer and Martin Schultze |
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| 520 | |a 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. | ||
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| 650 | 4 | |a total gas pressure | |
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