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Tirano (1624-1930): a long time series of harvest dates for grapevine

By L. Mariani, S. Parisi, O. Failla, G. Cola, G. Zoia and L. Bonardi

Abstract

Since Middle Ages, the rulers of many territories of Europe defined grape harvest dates for a lot of motivations, sometimes producing quite long archives of dates. These data are useful for paleoclimatic reconstruction because the date of harvest is influenced by a set of climatic variables like temperature, precipitation, solar radiation and so on. More specifically, the main determinant of grape harvest date is the maximum air temperature of Spring \u2013 Summer period. In this work, time series of grape harvest dates (1624-1930) for the Alpine area of Tirano - Valtellina (North Italy) were analyzed by means of a linear model approach to reconstruct maximum temperatures of Sondrio for the bimester May - June. Unavaible data were rebuilt by means of a correlation analysis between harvest dates of Burgundy and Tirano. The final product was represented by a time series of May - June temperatures for the whole period 1624-2003. Some climatological evaluations were carried out; in particular homogeneous periods were defined and characterized adopting a statistical approach founded on a change point analysis

Topics: Climatology, Phenology, Proxy data, Temperature reconstruction, Settore M-GGR/01 - Geografia, Settore AGR/03 - Arboricoltura Generale e Coltivazioni Arboree
Publisher: Associazione italiana di agrometeorologia
Year: 2009
OAI identifier: oai:air.unimi.it:2434/69471
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