Articles | Volume 18, issue 9
https://doi.org/10.5194/essd-18-6527-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-6527-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description article
| 
08 Sep 2026
Data description article |
| 08 Sep 2026
| 08 Sep 2026
Long-term temperature, oxygen and water clarity trends in Swiss lakes
Fabian Bärenbold
CORRESPONDING AUTHOR
Department of Surface Waters – Research and Management, Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland
Institute of Earth Surface Dynamics, University of Lausanne, Lausanne, Switzerland
Camilla Capelli
Institute of Earth Sciences, University of Applied Sciences and Arts of Southern Switzerland (SUPSI), Mendrisio, Switzerland
Lukas De Ventura
Office for Environment, Department of Construction, Transport and Environment of the Canton of Aargau, Aarau, Switzerland
Stefanie Eyring
Water and Soil Conservation Laboratory, Department of Water and Waste Management, Public Works and Transport Directorate of the Canton of Bern, Bern, Switzerland
Elise Folly
Water Protection Section, Service for the Environment of Canton Fribourg, Givisiez, Switzerland
Nicole Gallina
International Commission for the Protection of the Waters of Lake Geneva – CIPEL, Geneva, Switzerland
Barbara Känel
Office of Waste, Water, Energy, and Air (AWEL), Canton of Zurich, Zurich, Switzerland
Peter Keller
Office for Environment, Building Department of the Canton of Zug, Zug, Switzerland
Oliver Köster
Zurich Water Supply, Zurich, Switzerland
Fabio Lepori
General Direction of Environment, Canton of Vaud, Lausanne, Switzerland
Robert Lovas
Office for Environment and Energy (UWE), Canton of Lucerne, Lucerne, Switzerland
Michela Rogora
National Research Council of Italy, Water Research Institute (CNR-IRSA), Verbania, Italy
David J. Janssen
Department of Surface Waters – Research and Management, Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland
Damien Bouffard
Department of Surface Waters – Research and Management, Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland
Institute of Earth Surface Dynamics, University of Lausanne, Lausanne, Switzerland
Martin Schmid
Department of Surface Waters – Research and Management, Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland
Data sets
Data for: Long-term temperature, oxygen and water clarity trends in Swiss lakes Fabian Bärenbold et al. https://doi.org/10.25678/000GJC
Model code and software
Data for: Long-term temperature, oxygen and water clarity trends in Swiss lakes Fabian Bärenbold et al. https://doi.org/10.25678/000GJC
Short summary
We present a publicly available dataset of physical lake monitoring data of 21 Swiss lakes, including calculated variables like thermocline depth. The data was measured over many decades by cantonal authorities and research institutes. We used the data to compare the evolution of Swiss lakes, and we found that temperature, heat content and stratification strength have strongly increased. In contrast, deepwater oxygen and thermocline depth do not show clear trends during the last few decades.
We present a publicly available dataset of physical lake monitoring data of 21 Swiss lakes,...
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