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…

Thermal conditions during the grape ripening period in viticulture geoclimate. Cool night index and thermal amplitude

Le régime thermique en période de maturation du raisin est l’une des variables déterminantes de la coloration du raisin et de la richesse en arômes, anthocyanes et polyphénols des vins.

Comparison of ancestral and traditional methods in the elaboration of sparkling wines; preliminary results

Top quality sparkling wines (SW) are mostly produced using the traditional method that implies a second fermentation into the bottle[1]. That is the case of sparkling wines of reputed AOC such as Champagne, Cava or Franciacorta. However, it seems that the first SW was elaborated using the ancestral method in which only one fermentation takes place[2]. That is the case of the classical SW from the AOC Blanquette de Limoux[3]. In both cases, SW age in the bottle during some time in contact with lees favoring yeast’s autolysis[4]. There is a lot of information about traditional method but only few exists about ancestral method. The aim of this work was to compare SW made by the ancestral method with SW made by the traditional method.

Les terroirs : variae causarum figurae

The jurist feels like an intruder when talking about terroirs. He looks at the press and tries to understand. We can read there about the cooking festival of May 30, 1996 which “..highlights products whose quality depends on a region”, that Camembert du pays d’Auge is the only one to be protected, I was thinking of camembert from Normandy, that 80% of Greek feta is made in the Netherlands, I thought it was in Denmark, and that the European Community protects geographical indications of IGP origin, probably a new category replacing the indications protected areas (1). I also learned that distributors are asking for more local products because “they come to confuse the cards in the part engaged with the big brands”. Carrefour has its “Terroirs and drawers”, Prisunic its “Vent d’Ouest”, Intermarché “Les bouquets du terroir”, Monoprix “Les terroirs de France” (2), Promodés and its brand “Reflets de France” for the “Continent” hypermarkets (3). At the same time it is asserted that “The term is a mere common noun. Unprotectable and therefore unprotected” (4).

Unravelling the microbial community structure and aroma profile of Agiorgitiko wine under different inoculation schemes

Agiorgitiko (Vitis vinifera L. cv.) is the most widely cultivated indigenous red grape variety in Greece, known for the production of Protected Designation of Origin Nemea wines.

Étude intégrée et allégée des terroirs viticoles en Anjou: caractérisation et zonage de l’unité terroir de base, en relation avec une enquête parcellaire

The terroir concept is presented as the basis of the A.O.C system, in the french vineyards. The “Anjou terroirs” programme aims at bringing the necessary scientific basisfor a rational and reasoned exploitation of the terroir. lt must lead to finalizing a lighter, more relevant integrated method of characterisation wich could be generally applied.