Climate and Bordeaux wine quality: identifying the key factors that differentiate vintages based on consensus rankings

• Autores: Kerrie A. Baciocco, Robert E. Davis, Gregory V. Jones
• Localización: Journal of wine research, ISSN 0957-1264, Vol. 25, Nº 2, 2014, págs. 75-90
• Idioma: inglés
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• Resumen

  • The climate of Bordeaux, France, was examined to determine if climatic factors can distinguish between consensus vintage rankings, developed using eight ratings sources, of red and sweet white wines from 1961 to 2009. Climate variables were computed for the growing season and average plant phenological stages and were compared between the 10 highest and lowest ranked vintages. Good vintages exhibited higher heat accumulation during the growing season and a general lack of rainfall, particularly during veraison. Most climate factors were consistent for both red and sweet white wines. Mean maximum temperature during the growing season was an important discriminator between good and poor vintages for both reds and whites, although sweet white wines were also affected by growing season precipitation and temperatures during the vine's dormant period. In general, consensus vintage quality is consistent between reds and whites (Spearman's ??=?0.66, p?