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This paper reports a climatic reconstruction approach for the Minho region (NW of Portugal) using grape harvest dates (GHD) as proxy of surface air temperature. This new GHD series was built based on the records from a set of local and regional newspapers (1854–1978) and the annuals of a Wine Producers Cooperative (1978–2010). The strong inverse correlation between Minho GHD and the mean maxima temperatures...
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