https://doi.org/10.25678/0004YA

Data for: Seasonaly modulates wind-driven mixing pathways in a large lake

Turbulent mixing controls the vertical transfer of heat, gases and nutrients in stratified water bodies, shaping their response to environmental forcing. Nevertheless, due to technical limitations, the redistribution of wind-derived energy fuelling turbulence within stratified lakes has only been mapped over short (sub-annual) timescales. Here we present a year-round observational record of energy fluxes in the large Lake Geneva. Contrary to the standing view, we show that the benthic layers are the main locus for turbulent mixing only during winter. Instead, most turbulent mixing occurs in the water-column interior during the stratified summer season, when the co-occurrence of thermal stability and lighter winds weakens near-sediment currents. Since stratified conditions are becoming more prevalent --possibly reducing turbulent fluxes in deep benthic environments--, these results contribute to the ongoing efforts to anticipate the effects of climate change on freshwater quality and ecosystem services in large lakes.

Dataset extent

Data and Resources

Citation

This Data Package

Fernández Castro, B., Bouffard, D., Troy, C., Ulloa, H., Piccolroaz, S., Sepulveda Steiner, O. R., et al. (2021). Data for: Seasonaly modulates wind-driven mixing pathways in a large lake (Version 1.0) [Data set]. Eawag: Swiss Federal Institute of Aquatic Science and Technology. https://doi.org/10.25678/0004YA

The associated article

Fernández Castro, B., Bouffard, D., Troy, C., Ulloa, H. N., Piccolroaz, S., Sepúlveda Steiner, O., et al. (2021). Seasonality modulates wind-driven mixing pathways in a large lake. Communications Earth & Environment, 2(1). https://doi.org/10.1038/s43247-021-00288-3

Metadata

Open Data Open Data
Long-term data Long-term data
Author(s)
  • Fernández Castro, Bieito
  • Bouffard, Damien
  • Troy, Cary
  • Ulloa, Hugo
  • Piccolroaz, Sebastiano
  • Sepulveda Steiner, Oscar Rodrigo
  • Chmiel, Hannah
  • Serra Moncadas, Lucas
  • Lavanchy, Sébastien Manuel
  • Wüest, Alfred Johny
Keywords lake,wind,mixing,energy pathways,Density stratification,LéXPLORE
Variables
  • relative_humidity
  • solar_radiation
  • temperature
  • tke_dissipation_rate
  • velocity
  • wind_speed
Systems
  • Lake
Timerange
  • 2019-01-01 TO 2020-12-31
Geographic Name(s)
  • Genfersee
  • Lac Léman
  • Lake Geneva
Review Level domain specific
Curator Bouffard, Damien
Contact Damien.Bouffard@eawag.ch
DOI 10.25678/0004YA