Project Description

Project Context :

Temperature is a key parameter in the functioning of lake ecosystems, influencing stratification, mixing, and species distribution. At the start of this project, only a few temperature time series existed in France. The project aims to enhance in situ records through new monitoring or existing data (sensors, sediment archives, remote sensing) and to test modelling approaches at broad spatial and temporal scales, for temperature prediction and, at selected study sites, for predicting ecological and physico-chemical status.

Project Objectives :

The project expanded the national network on lake temperature monitoring (RNT plans d'eau) to new strategic sites, including Léon Lake (40), affected by cyanobacterial blooms, and advanced modelling efforts. Two major outcomes: (1) dissemination of the LakeTSim dataset, providing 60 years of modelled temperatures (epilimnion/hypolimnion) for 401 WFD lakes; (2) configuration of the GLM-AED2 model (1900–2100) based on long-term data from the Lakes Observatory and sediment archives, producing indicators of bottom oxygenation (Lake Geneva) and physico-chemical status (Lake Annecy).

Project Results

To go further

Useful Links :

https://essd.copernicus.org/articles/15/5631/2023/

https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lol2.10435

https://www.sciencedirect.com/science/article/pii/S1470160X25001499

https://hal.inrae.fr/hal-04569623v1

https://dataecla.fr/outils-et-methodes/ALAMODE

Contact : rosalie.bruel@ofb.gouv.fr