Meier et al. 2007 Swiss Grape Harvest Dates and Spring/Summer Temperature Reconstruction Meier, N.; Rutishauser, T.; Pfister, C.; Wanner, H.; Luterbacher, J. Meier, N. Rutishauser, T. Pfister, C. Wanner, H. Luterbacher, J. Air Temperature Reconstruction earth science/paleoclimate/historical (grape harvest date,null,null,day of year,null,historical,null,null,N,"Median time series of Swiss grape harvest dates, number of days after January 1") earth science/paleoclimate/climate reconstructions|historical (temperature,null,null,degree Celsius,Apr-Aug,climate reconstructions|historical,anomalized,null,N,reference period 1961-1990) earth science/paleoclimate/climate reconstructions|historical (age,null,null,year Common Era,null,climate reconstructions|historical,null,null,N,null) earth science/paleoclimate/historical (Swiss Plateau>LATITUDE 47.16>LONGITUDE 7.5) 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 1ēC 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Meier, N. Investigator : Rutishauser, T. Investigator : Pfister, C. Investigator : Wanner, H. Investigator : Luterbacher, J. 2008-02-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/6099 https://www1.ncdc.noaa.gov/pub/data/paleo/historical/europe/switzerland/meier2007grape.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/europe/switzerland/meier2007grape.txt English https://www.ncdc.noaa.gov/paleo/study/6099 https://www1.ncdc.noaa.gov/pub/data/paleo/historical/europe/switzerland/meier2007grape.txt 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 START YEAR: 1480 AD * END YEAR: 2006 AD 6.75 46.75 8.75 47.5