St. Lawrence Valley, Quebec 18th and 19th Century Composite Daily Temperature Data Slonosky, V.C. Slonosky, V.C. earth science/paleoclimate/climate reconstructions|historical (minimum surface temperature,null,unspecified margin of error,degree Celsius,null,climate reconstructions|historical,null,regression analysis,N,to estimate daily minimum from fixed hourly observations) earth science/paleoclimate/climate reconstructions|historical (maximum surface temperature,null,null,degree Celsius,null,climate reconstructions|historical,null,regression analysis,N,daily maximum) earth science/paleoclimate/climate reconstructions|historical (maximum surface temperature,null,unspecified margin of error,degree Celsius,null,climate reconstructions|historical,null,regression analysis,N,to estimate Montreal daily maximum temperatures from other sites) earth science/paleoclimate/climate reconstructions|historical (notes,null,null,null,null,climate reconstructions|historical,null,null,C,source for daily maximum value) earth science/paleoclimate/climate reconstructions|historical (minimum surface temperature,null,null,degree Celsius,null,climate reconstructions|historical,null,regression analysis,N,daily minimum) earth science/paleoclimate/climate reconstructions|historical (notes,null,null,null,null,climate reconstructions|historical,null,null,C,source for daily minimum value) earth science/paleoclimate/climate reconstructions|historical (age,null,null,day of year,null,climate reconstructions|historical,null,null,N,null) earth science/paleoclimate/climate reconstructions|historical (age,null,null,year Common Era,null,climate reconstructions|historical,null,null,N,null) earth science/paleoclimate/climate reconstructions|historical (minimum surface temperature,null,unspecified margin of error,degree Celsius,null,climate reconstructions|historical,null,regression analysis,N,to estimate Montreal daily minimum temperatures from other sites) earth science/paleoclimate/climate reconstructions|historical (maximum surface temperature,null,unspecified margin of error,degree Celsius,null,climate reconstructions|historical,null,regression analysis,N,to estimate daily maximum from fixed hourly observations) earth science/paleoclimate/historical (St. Lawrence Valley>LATITUDE >LONGITUDE ) Daily observations of weather and climate for the province of Quebec, Canada, start in the 18th century and continue to the present day. Daily temperature observations from 12 observers ranging from 1742 to 1873 are described here. The frequency distributions of the temperature observations from each of the historical weather journals are examined for data quality and consistency. Adjustments for differing types of exposures, particularly north wall exposures, are developed. It is shown that examination of the daily data distribution can be used to infer information concerning the instruments used and likely exposure in the absence of metadata. Comparisons of the relative frequency distributions of historical and modern hourly observations are used to assess the reliability of the daily historical temperature data, and are able to detect problems with instrument exposure or sampling biases. Historical observations of temperature from the 18th and 19th centuries are shown to be comparable to modern temperature data. These daily observations will be used in further studies to analyse changes in climate and extreme conditions on a decadal to centennial time frame, and will form part of international data sets for the reconstruction and analysis of past climate events. STUDY NOTES: 18th and 19th Century composite historical daily temperature observations from the St. Lawrence River valley, Quebec, Canada. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Slonosky, V.C. 2014-07-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/16336 https://www1.ncdc.noaa.gov/pub/data/paleo/historical/northamerica/canada/st-lawrence2014temp-sources.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/northamerica/canada/st-lawrence2014temp.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/northamerica/canada/st-lawrence2014temp-sources.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/northamerica/canada/st-lawrence2014temp.txt English https://www.ncdc.noaa.gov/paleo/study/16336 https://www1.ncdc.noaa.gov/pub/data/paleo/historical/northamerica/canada/st-lawrence2014temp-sources.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/northamerica/canada/st-lawrence2014temp.txt Victoria C. Slonosky2014Daily minimum and maximum temperature in the St-Lawrence Valley, Quebec: two centuries of climatic observations from CanadaInternational Journal of Climatology10.1002/joc.4085http://onlinelibrary.wiley.com/doi/10.1002/joc.4085/abstract Slonosky, V.C.2014Historical Climate Observations in Canada: 18th and 19th Century Daily Temperature from the St-Lawrence Valley, QuebecGeosciences Data Journal10.1002/gdj3.11http://onlinelibrary.wiley.com/enhanced/doi/10.1002/gdj3.11 START YEAR: 1742 AD * END YEAR: 2010 AD -77 45.4 -71 47