LEXPLORE PLATFORM

LéXPLORE Letters No. 67

This newsletter was generated on the 22-03-2025.

The figures below are showing data for the period 19-02-2025 to 05-03-2025.

Until today, Thetis sampled 4906 depth profiles on Lake Geneva. In this Newsletter we show 1 profiles, so just 0.02% of the recorded data. The complete data set is available at Datalakes.

Data highlights of this issue

Unfortunately, only one Thetis profile was recorded for the time period covered in this issue. We can not infer much from just one profile. But from the atmospheric data we see that on Febraury 25th a stormy front passed which led to substantial wave heights of up to 0.9 meters. Afterwards, more clear sky days at the beginning of March led to a pronounced daily cycle in air temperature.

What is displayed

Data from the Thetis profiler:

  • Water Temperature in °Celsius

  • Water Temperature Anomaly on daily resolution with respect to to the available daily climatology from Thetis so far in Kelvin

  • Dissolved Oxygen mg/L

  • Oxygen Saturation in %

  • Chlorophyll A in μg/L

  • Chlorophyll A Anomaly on daily resolution with respect to to the available daily climatology from Thetis so far in μg/L

  • Backscattering of light 700 nm in 1.e-2 m-1, representing zooplankton or larger particles in the water

Data from the automatic weather station:

  • Air Temperature in °Celsius

  • Wind Speed in m/s

  • Precipitation in mm

Data from the wave buoy:

  • Wave height in decimeter

Authorship and further information

This newsletter is created by EPFL, specifically Martin Wegmann.

For more information about LéXPLORE, contacting us and possibilities to visit the platform: lexplore.info

If you want to know more about the Chlorophyll distribution across Lake Geneva, have a look at the satellite data map by our colleagues at CIPEL.

If you want to know more about the water temperature distribution across Lake Geneva, have a look at the lake reanalysis and forecasts by our colleagues at EAWAG.

If you want to use figures from the LéXPLORE Letters, you can use the following citation:

EPFL, Limnology Center 2025: LéXPLORE Letters, 67, https://lexplore.info/wp-content/uploads/2025/03/lexplore-letters-2025-03-22.html