14 research outputs found
Why climate change will not dramatically decrease viticultural suitability in main wine-producing areas by 2050
Mapping viticultural potential in temperate climate areas. Case study: Bucium vineyard (Romania)
The paper presents the spatial
distribution of ecological suitability for
grape growing in Bucium vineyard
(Romania), viticultural area with ecological
characteristics representative for northern
vineyards. The study is based on a complex
methodology implying use of remote
sensing, Geographical Information
Systhems (GIS), climatic data, topographic
and pedologic maps. Research reveal the
low ecological potential of Bucium area,
specialized, traditionally, in white table
wines, sparkling wines and white quality
wines. Data analysis shows that 30% of
Bucium vineyard (281 ha of 928 ha) is
inappropriate, in terms of climatic
suitability, for vinifera varieties culture;
34% of the area (316 ha) has limited
ecological potential, enough to produce
white table wines and sparkling wines; 36%
of the area (331 ha) is suitable for quality
white wines. In the vineyard area was not
registered suitable conditions for quality red
wines production. Huglinâs heliothermal
index values shows that the vineyard has
climatic characteristics that allow culture of
wine varieties with early and medium
ripening. In terms of ecological suitability, it
appears that the most favorable conditions
offer CetÄĆŁuia wine land, the eastern slope
of the Doi Peri hill, eastern slope of ViĆani
hill, south-western slope of Bucium hill and
southern slope of PietrÄria wine land
Evaluation avant construction de lâimpact dâun ouvrage linĂ©aire en remblai sur le risque de gel printanier : exemples sur la LGV est-europĂ©enne dans le vignoble de Champagne
Afin dâĂ©valuer dans un vignoble lâincidence sur la frĂ©quence du gel dommageable (t° < -2°C) que pourrait crĂ©er un futur remblai de la Ligne Ă Grande Vitesse Est europĂ©enne, une bĂąche ayant la longueur et la hauteur de cet ouvrage a Ă©tĂ© installĂ©e sur le site des Fonds de Sillery (sud-est de la ville de Reims). Pour les situations mĂ©tĂ©orologiques de type radiatif, des mesures de la tempĂ©rature et des Ă©coulements dâair froid, ont Ă©tĂ© effectuĂ©es, durant le printemps 2001, sur 19 points implantĂ©s en amont du futur remblai, simulĂ© par une bĂąche. La comparaison des rĂ©sultats sans bĂąche (2 nuits de mesure), puis avec sa prĂ©sence (3 nuits), montre que cet ouvrage permettra la formation dâun lac dâair froid en amont du remblai, mais que celui-ci ne devrait pas affecter le vignoble. Sur un autre site, Ă Vrigny (sud-ouest de Reims), dâautres mesures de tempĂ©ratures rĂ©alisĂ©es avec et sans bĂąche ont permis de repĂ©rer les talwegs dâĂ©coulement. En tenant compte des rĂ©sultats enregistrĂ©s sur le premier site ainsi que de la hauteur de lâouvrage, une simulation spatiale a Ă©tĂ© rĂ©alisĂ©e. Elle montre que quelques hectares de vigne seraient affectĂ©s par un refroidissement supplĂ©mentaire dĂ» Ă la prĂ©sence des murs antibruit de la future ligne. Sur les deux sites, ces rĂ©sultats ont nĂ©cessitĂ© des amĂ©nagements spĂ©cifiques afin de laisser circuler lâair froid pour quâil nâaffecte pas le vignoble
Climate and viticulture in the Waipara region: Current and future potential
This paper describes an international investigation into the climate variability within the Waipara region of Canterbury, New Zealand and its importance to viticulture. The complex terrain of the region results in intricate patterns of climate variability, which can create significant spatial variability in the optimal conditions needed for high quality wine production. Grape varieties are adapted to specific climate parameters (especially temperature), which determines the synchrony in the development of primary and secondary metabolites and hence wine quality. The viability of wine production therefore depends on ensuring that each variety is grown in the most climatically optimal locations. This research uses advanced techniques to map some key climate parameters at high spatial resolution with a combination of field measurement, remote sensing, and climate and phenological modelling techniques. This information can then be used to select optimal locations for specific grape varieties and for evaluating the future potential for grape production across the Waipara
region under changing climate conditions. The new knowledge generated therefore provides the basis for rational decision-making in support of future development of viticulture in the region. The outputs also provide a framework within which to evaluate adaptation of viticulture to future climate change in other vineyard regions of New Zealand and elsewhere
Spatial variability of night temperatures at a fine scale over the Stellenbosch wine district, South Africa
AgriwetenskappeWingerd- En WynkundePlease help us populate SUNScholar with the post print version of this article. It can be e-mailed to: [email protected]
Using atmospheric and statistical models to understand local climate and assess spatial temperature variability at a fine scale over the Stellenbosch wine district, South Africa.
Please help us populate SUNScholar with the post print version of this article. It can be e-mailed to: [email protected] En Wynkund
Vinos de Altura del Noroeste Argentino â CaracterĂsticas fĂsico- quĂmicas y Sensoriales
International audienc
A fine scale approach to map bioclimatic indices using and comparing dynamical and geostatistical methods
Climate, especially temperature, plays a major role in grapevine development. Several bioclimaticindices have been created to relate temperature to grapevine phenology (e.g. Winkler Index, Huglin Index, Grapevine Flowering VĂ©raison model [GFV]). However, temperature variability can be significant at vineyard scale, so knowledge of the various climatic mechanisms leading to this variability is essential in order to improve local management of vineyards in response to climate change. Indeed, current climate change models are not accurate enough to take into account temperature variability at the vineyard scale (Dunn et al, 2015). This study therefore proposes a method for compare regional modelling and fine-scale observations to map temperatures and bioclimatic indices at fine spatial resolution for some recent growing seasons. This study focuses on two vineyard areas, the Saint-Emilion and Pomerol region in France and the Marlborough vineyard region in New Zealand. A regression model using temperature from networks of measurements has been created in order to map temperature and bioclimatic indices at vineyard scale (100 metres for Marlborough and 25 metres for SaintEmilion and Pomerol). To complement the field measurements, the advanced physics-based three-dimensional numerical weather model Weather Research and Forecasting â WRF (http://wrf-model.org/index.php) has been used, providing hourly meteorological parameters over a complete growing season for each site at 1, 3 and 9 and 27 kilometre resolution. The output of the WRF model provides temperature, wind speed and direction, pressure, and solar radiation data at these different resolutions. The application of different scales of modelling allows improvement in understanding the climate component of the specific terroirs of the study areas
XXIVĂšme COLLOQUE DE LâASSOCIATION INTERNATIONALE DE CLIMATOLOGIE
âą CLIMAT, TOURISME ET SANTE
âą CLIMAT ET TERROIRS
âą EVENEMENTS CLIMATIQUES EXTREMES
âą TOPOCLIMATOLOGIE
âą CLIMATOLOGIE DES MONTAGNES TROPICALES
âą CLIMAT ET GEOMATIQU