| HISTORICAL |
Meier et al. 2007 Swiss Grape Harvest Dates and Spring/Summer Temperature Reconstruction
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Meier, N.,Rutishauser, T.,Pfister, C.,Wanner, H.,Luterbacher, J. 2007 Grape harvest dates as a proxy for Swiss April to August
temperature reconstructions back to AD 1480 Geophysical Research Letters Vol. 34, L20705
| Data Coverage |
North: 47.5 * South: 46.75 |
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West: 6.75 * East: 8.75 |
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Altitude: 550 m |
Start Year: 1480 AD * End Year: 2006 AD
Data: Please Cite Data Contributors!
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Summary: We present an annually resolved record of grape harvest dates for Switzerland.
The strong negative relationship between grape harvest dates and April-August
temperatures allowed a new reconstruction, with associated uncertainties,
to be derived back to 1480. Calibration (1928-1979) was performed with
monthly data from the Basel and Geneva stations and verified over 1980-2006.
Twelve days of grape harvest difference correspond to around 1ºC April-August
temperature difference. Periods cooler (late grape harvest dates) than the
1961-1990 mean are reconstructed during the 17th century and at the beginning
of the 19th century. Warmer conditions were experienced in the early 18th
century and during the recent decades, in agreement with grape harvest
temperature reconstructions from France and other independent temperature
estimates. On decadal (annual) time-scales the earliest harvests were in the
1580s (2003) and the latest vintages in the 1740s (1816). Large tropical
volcanic eruptions led to significantly later grape harvest dates (cooling)
one to two years after the event.
More Info on Historical Data |
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Complete XML Record: noaa-historical-6099
(Last Revised: 2009-02-11 )
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| http://www.ncdc.noaa.gov/paleo/ |
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