Terroir 2014 banner
IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2014 9 Grape growing climates, climate variability 9 High resolution climatic zoning of the Portuguese viticultural regions

High resolution climatic zoning of the Portuguese viticultural regions

Abstract

Viticulture and winemaking represent a key sector for the Portuguese economy. As grapevines are strongly governed by atmospheric factors, climate change may impose a major threat to this crop. In this study, the current-past (1950-2000) and future (2041-2070) climatic conditions in Portugal are analyzed using a number of bioclimatic indices, including a new categorized index (CatI). A two-step method of spatial downscaling is applied in order to attain a very high spatial resolution (near 1 km) over Portuguese mainland. Future projections are established using an ensemble of 13 regional climate models, under the IPCC A1B-SRES emission scenario. Results show that CatI integrates the most important bioclimatic characteristics of a given region, and allows the direct comparison between them. Outcomes for the recent-past are in clear agreement with the current geographical distribution of this crop and of the established winemaking regions. Conversely, under future scenarios, projections point to a lower bioclimatic diversity, due to the expected warming and drying throughout the country. This will likely lead to changes in grapevine suitability and wine characteristics of each viticultural region, which may result in additional challenges for the winemaking sector. As such, suitable adaptation measures need to be developed in order to mitigate climate change impacts on the Portuguese viticulture. 

DOI:

Publication date: August 11, 2020

Issue: Terroir 2014

Type: Article

Authors

Gregory V. JONES (1), Helder FRAGA (2), Aureliano C. MALHEIRO (2), José MOUTINHO-PEREIRA (2), Fernando ALVES (3), Joaquim G. PINTO (4,5), João A. SANTOS (2)

(1) Department of Environmental Studies, Southern Oregon University, Oregon, USA 
(2) CITAB, Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal (
(3) ADVID Associação para o Desenvolvimento da Viticultura Duriense, Godim, Portugal 
(4) Institute for Geophysics and Meteorology, University of Cologne, Cologne, Germany 
(5) Department of Meteorology, University of Reading, Reading, United Kingdom

Contact the author

Keywords

Viticultural zoning, Bioclimatic downscaling, Climate models, Climate change, Portugal 

Tags

IVES Conference Series | Terroir 2014

Citation

Related articles…

Zoning methods in relation to the plant

The characterization of the plant is the obliged pathway between the environment and the product. The responses of the plant amplify or reduce the variations of the environment, while determining directly the type and the quality of the products. These results are inscribed inside the Viticultural Terroir Unit (VTU). VTU is the complex interaction between the Basic Terroir Unit or BTU (interaction mesoclimate x soil/subsoil), the genotype (variety x rootstock), the management system, the oenological technologies. Thus, at the most complex level, a global biological triptych is found again : environment (source) x plant (structure) = produced and exchanged substances.

Stable or dynamic? How phenotypic plasticity could be key to select for grapevine adaptation?

Climate change will require the adaptation of agricultural systems and among the different means of adaptation, changing plant material is a promising strategy. In viticulture, different levels of diversity are currently exploited: clonal and varietal diversity for rootstocks and scions. A huge quantity of research aims to evaluate different genotypes in different environmental conditions to identify which ones are the best adapted and the most tolerant to future environmental conditions.

Vinos de tea en la isla de la Palma

En el Norte de la Isla de La Palma (Islas Canarias), se cultivan un conjunto de varietales constituidos principalmente por Negramoll, Listán blanco, Prieto, Albillo y Muñeco.

Methodology for soil study and zoning

La caractérisation des sols en vue d’une étude de terroirs viticoles peut être réalisée à différents niveaux de complexité, suivant le nombre de variables pris en compte et suivant le fait que celles-ci sont spatialisées ou non

METHYL SALICYLATE: A TRENDY COMPOUND MARKER OF ZELEN, A UNIQUE SLOVENIAN VARIETY

The wine market interest for autochthonous varieties, particularly from less known wine regions, has significantly raised in the past few years. In that context, Slovenia, a small country from central Europe with a long winemaking tradition, is getting more and more attention, particularly through its range of unique regional varieties. Among them, Zelen, meaning “green” in Slovene, can only be found in the Vipava valley region, located on the western side of the country, near the border with Italy. When they are young, Zelen wines display very singular aromas reminiscent of rosemary, sage and white fruit. Despite its uniqueness, Zelen wine aromatic typicality is poorly documented in the literature.