Terroir 2016 banner
IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2016 9 Climates of Wine Regions Worldwide 9 Mapping climate and bioclimatic indices at high-resolution in vineyard regions

Mapping climate and bioclimatic indices at high-resolution in vineyard regions

Abstract

Many of the world’s vineyard regions are located in regions of complex terrain, with the result there is significant local climate variation. The range of climatic conditions provides the opportunity for wine producers to readily adapt to the increasing influence of global warming on wine production by adjusting grape varieties and management practices to suit local environmental conditions. However, to allow this to happen, knowledge of fine scale variations in climate in vineyard regions needs to be improved. Our recent research has demonstrated that mesoscale atmospheric numerical models can be used to provide a good representation of the small-scale variations of climate in such regions of complex terrain. They are particularly useful for mapping mean daily temperature, which is the main variable used to derive bioclimatic indices of relevance to grapevine growth (such as the Huglin, Winkler, Grapevine Flowering Véraison and cool nights indices).

This paper provides examples of recent research in which the Weather Research and Forecasting climate model has been used to improve our understanding of climate variability at high spatial (1 km and less) and temporal (hourly) resolution within vineyard regions of different terrain complexity (e.g. in South Africa, New Zealand and France). Model performance is evaluated through comparison with automatic weather stations. The model output is used to investigate the spatial variability of derived bioclimatic indices and climatic hazards such as the occurrence of late frost, at high resolution across vineyard regions. Further analysis has also provided useful insights into grapevine response to spatial variability of climate through the prediction and mapping of dates of the key phenological stages of flowering and véraison.”.

DOI:

Publication date: June 22, 2020

Issue: Terroir 2016

Type: Article

Authors

Andrew Sturman (1), Peyman Zawar-Reza (1), Iman Soltanzadeh (2), Marwan Katurji (1), Valérie Bonnardot (3), Amber Parker (4), Mike Trought (5), Hervé Quénol (3), Renan Le Roux (3), Eila Gendig (6) and Tobias Schulmann (7)

(1) Centre for Atmospheric Research, University of Canterbury, Christchurch, New Zealand
(2) MetService, Wellington, New Zealand
(3) LETG-Rennes COSTEL, UMR 6554 CNRS, Université Rennes 2, Rennes, France
(4) Department of Wine, Food and Molecular Biosciences, Lincoln University, Lincoln, New Zealand
(5) Plant & Food Research Ltd., Marlborough Wine Research Centre, Blenheim, New Zealand
(6) Department of Conservation, Christchurch, New Zealand
(7) Catalyst, Christchurch, New Zealand

Contact the author

Keywords

Terroir, climate, bioclimatic indices, mapping, zoning

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

A sensometabolomic approach to understand wine mouthfeel percepts

Targeted analytical methods can overlook compounds that are a priori unknown to play a role in the mouthfeel sensations. This limitation can be overcome with the information provided by untargeted metabolomic analysis using UPLC‐QTOF-MS. To this end, an untargeted metabolomic approach applied to 42 red wines has allowed development of a model with predictive capacity by cross-validation for the “dry”, “oily” and “unctuous” sensations perceived by a sensory panel. The optimal PLS model for “dry” retained compounds with positive regression coefficients (≥ 0.17) including a trimer procyanidin, a peptide, and four anthocyanins.

Read More

Use of a recombinant protein (Harpin αβ) as a tool to improve phenolic composition in wines

Climate change is modifying environmental conditions in all wine-growing areas of the
world.

Read More

Différenciation mésoclimatique des terroirs alsaciens et relation avec les paramètres du milieu naturel

The influence of climatic conditions on the development of the vine and on the quality of the wines no longer needs to be demonstrated at the scale of the vineyard, by the regional climatic characteristics, determining on this scale the viticultural potentialities (Huglin, 1978; Branas, 1946; Riou et al ., 1994); but also on a local scale, at the level of the basic terroir unit (Morlat, 1989), by the landscape differentiation of the natural environment inducing climatic variability within the same vineyard, and partly explaining differences in functioning of the vine, in connection with the processes of maturation and the quality of the wine (Becker, 1977 and 1984; Morlat, 1989 and Lebon, 1993a). According to these authors, the climatic diversity in a wine region constitutes in addition to the edaphic component, an important component of characterization of the Basic Terroir Units (UTB).

Read More

First disclosure of eugenol precursors in Vitis genus: analytical development and quantification

The main aim of this work was to develop an analytical method to disclosure the
molecular form of eugenol precursor. Indeed eugenol is an important contributor to
Armagnac spirits typicity made with Baco blanc.

Read More

Oenological tannins to prevent Botrytis cinerea damage: reduction of laccase activity

Oenological tannins are classified as hydrolysable and condensed tannins. Their use in winemaking is only authorized, to facilitate wine fining. Nevertheless, tannins could also be used to prevent laccase effects.

Read More