Co-facilitators
![Florence Habets
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Florence Habets](https://www.onewater.fr/sites/websites/www.onewater.fr/files/styles/trombinoscope_picture/public/images/2023-03/Photo_Florence_Habets.jpg?h=d318f057)
![Simon Munier
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Simon Munier](https://www.onewater.fr/sites/websites/www.onewater.fr/files/styles/trombinoscope_picture/public/images/2023-03/simon_Munier_photo.jpg?h=6c83441f)
![Thierry Pellarin
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Thierry Pellarin](https://www.onewater.fr/sites/websites/www.onewater.fr/files/styles/trombinoscope_picture/public/images/2023-03/Thierry_Pellarin_photo.jpg?h=5daef51e)
Presentation
Challenge 1 involves estimating water resources in France over the past few decades and using forecasts for the next six months. The aim is to gain a better understanding of the conditions under which extreme climatic phenomena can occur, to better anticipate risk situations through three main actions:
1. Developing a national lysimeter network to acquire information on rainfall distribution between evaporation, run-off and infiltration, and to characterize the dynamics of groundwater recharge. The network must enable the acquisition of data on a daily basis at least, with real-time transmission at existing sites. To facilitate this, lysimeters (the most cost-effective models possible) will be tested and assessed, then installed at certified sites.
2. Improving historical hydro-meteorological re-analyses to reconstitute the history of water catchments. This involves integrating old data, using high-resolution meteorological models and incorporating the impact of human activities on hydrology.
3. Enhancing two existing seasonal hydro(geo)logical forecasting platforms dedicated to low-water flows and groundwater. This will involve:
- Building multi-model seasonal meteorological forecasts corrected for regionalization.
- The spatial extension of these platforms by integrating new digital models and/or applications.
- Improving initial conditions by developing data assimilation methods.
- Integrating, in forecast mode, the anthropogenic impacts on water resources, such as abstractions, water diversion and dams.
![Challenge 1 - Anticipating changes affecting water resources
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Picture of a dried-up river framed by the key points of Challenge 1 on Anticipation](https://www.onewater.fr/sites/websites/www.onewater.fr/files/styles/background_centered_full_width_desktop/public/images/2023-10/Presentation%20challenge%201_0.png?h=d1cb525d)
Challenge 1 - Anticipating changes affecting water resources
© OneWater