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IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2014 9 Grape growing climates, climate variability 9 A fine scale study of temperature variability in the Saint-Emilion area (Bordeaux, France)

A fine scale study of temperature variability in the Saint-Emilion area (Bordeaux, France)

Abstract

As the quality and typicity of wine are influenced by the climate, it is essential to have a good knowledge of climate variability, especially with regard to temperature, which has a great impact on vine behavior and grape ripening. Accurately zoning the early and late ripening areas, particularly in a context of climate change, will allow the winegrower to adapt his plant material and viticultural techniques to the specifications of his terroir. The general models of circulation used by meteorologists are not precise enough to study the spatial distribution of temperatures at a fine scale. A network of 90 temperature sensors was established in the Saint-Emilion wine area to study this parameter at a local scale. The initial results show high variability of temperatures in this area especially for minimum temperatures, and also of bioclimatic indices. The ensuing differences in terms of precocity vary from around fifty days for veraison and more for maturity. 

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Publication date: August 10, 2020

Issue: Terroir 2014

Type: Article

Authors

Laure de RESSÉGUIER (1), Hervé QUÉNOL (2), Jean-Philippe ROBY (1) and Cornelis van LEEUWEN (1)

(1) Bordeaux Sciences Agro, Univ. Bordeaux, ISVV, Ecophysiology and functional genomics of grapevines, UMR 1287, F-33140 Villenave d’Ornon 
(2) Laboratoire COSTEL, UMR 6554 LETG du CNRS, Université Rennes 2-Haute Bretagne, Rennes

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Keywords

Terroir, Climate, Temperature variability, Saint-Emilion area

Tags

IVES Conference Series | Terroir 2014

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