Observation et modélisation spatiale de la température dans les terroirs viticoles du Val de Loire dans le contexte du changement climatique

Climate change is significantly altering temperature patterns in the viticultural terroirs of the Loire Valley, with projections indicating a decrease in frost risk by April but an increase in extreme heat events (>30°C and >35°C) during veraison and berry ripening. This study analyzed spatial temperature variability using regional weather stations and high-resolution modeling (RAMS at 5 km resolution), revealing that local factors can sometimes influence temperatures as significantly as larger-scale climate trends. Multicriteria modeling on the Coteaux du Layon vineyards identified key local drivers of temperature variability, while RAMS simulations reduced large-scale biases compared to ARPEGE-Climat (50 km resolution). The findings underscore the complexity and fine-scale nuances of climate impacts on viticultural regions.

Bonnefoy, C. Observation et modélisation spatiale de la température dans les terroirs viticoles du Val de Loire dans le contexte du changement climatique. https://doi.org/10.70675/12181cd1zc80fz45f0z8ae7z686e6872f26d