Terroir 2014 banner
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. 

DOI:

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

Contact the author

Keywords

Terroir, Climate, Temperature variability, Saint-Emilion area

Tags

IVES Conference Series | Terroir 2014

Citation

Related articles…

Understanding the physiological responses of Sauvignon blanc vines to sequential extreme weather events: implications for vineyard management in a changing climate

Climate plays a predominant role in vines’ growth and productivity and several environmental variables are already known to pose challenges to grapevine production and the horticultural industry as a whole. In this context, a number of extreme weather events already occurring and expected to occur in the next decades even more frequently and with higher magnitude results from current climate change scenario. The aim of this study was to examine the physiological responses of roots, leaves, and berries of Vitis vinifera cv. Sauvignon blanc to consecutive and combined stressors simulated in a semi-controlled environment.

Use of fumaric acid to control pH and inhibit malolactic fermentation in wines

In this audio recording of the IVES science meeting 2022, Antonio Morata (Universidad Politécnica de Madrid, Madrid, Spain) speaks about the use of fumaric acid to control pH and inhibit malolactic fermentation in wines.

Historical terraced vineyards – heritage and nature conservation strategies

Historical terrace vineyards are simultaneously impressive documents of the human inclination to design, sites for the production of high quality wines and habitats for a rich variety of flora and fauna

Agroclimatic characterisation of the Portugese wine denominations of origin using a compound index

Aims: This study aims to: (1) characterize the agroclimatic conditions of the Portuguese Denominations of Origin, using a compound index that combines thermal and soil water balance conditions and a high-resolution climatic dataset (~1 km spatial resolution); (2) categorize the main grapevine varieties as a function of this compound index.

A vine physiology-based terroir study in the AOC-Lavaux region in Switzerland

Understanding how different pedoclimatic conditions interact with vine and berry physiology, and subsequently impact wine quality, is paramount for an good valorization of viticultural terroirs and can help to optimize mitigation strategies in the face of global warming