Lake Geneva ‒ SENSE ‐ EPFL

Greenhouse gases study in Swiss Lakes

Since early 2025, EPFL’s SENSE group has embarked on a seasonal, lake‐wide monitoring campaign across Swiss lakes to unravel the biogeochemical processes controlling the production, distribution, and emission of methane (CH₄) and nitrous oxide (N₂O).

Preparing the SubOcean

The SubOcean is a sophisticated underwater instrument that enables real-time, in-situ measurements of dissolved gases in water.

The Léxplore platform on Lake Leman

Floating laboratory installed in 2019 on Lake Leman that allow researchers to collect and acquire live data

Lab work aboard the Léxplore platform

In the upper part of the lake, we typically see higher methane concentrations, while in the lower part, we observe increased nitrous oxide concentrations.

Dr. Santona Kathun, Post-doctoral scientist

April 2025

April 2025 expedition aboard Léxplore platform on Lake Geneva – Switzerland, 46°27′N 6°33′E, altitude 372 m

July 2025

July 2025 expedition aboard Léxplore platform on Lake Geneva – Switzerland, 46°27′N 6°33′E, altitude 372 m

August 2025

August 2025 expedition aboard Léxplore platform on Lake Geneva – Switzerland, 46°27′N 6°33′E, altitude 372 m