Adjusted and Homogenized Canadian Climate Data (AHCCD)

Adjusted and Homogenized Canadian Climate Data (AHCCD) The data consist of monthly, seasonal and annual means of homogenized daily maximum, minimum and mean surface air temperatures for more than 330 locations in Canada; monthly, seasonal and annual totals of adjusted daily rainfall, snowfall and total precipitation for more than 460 locations; homogenized monthly, seasonal and annual means of hourly surface wind speed at more than 110 locations; monthly, seasonal and annual means of hourly station and sea level pressure adjusted for more than 630 locations. The data are given for the entire period of observation. Please refer to the papers below for detailed information regarding the procedures for homogenization and adjustment. References Mekis, É. and L.A. Vincent, 2011: An overview of the second generation adjusted daily precipitation dataset for trend analysis in Canada. Atmosphere-Ocean, 49(2), 163-177. Vincent, L. A., X. L. Wang, E. J. Milewska, H. Wan, F. Yang, and V. Swail, 2012. A second generation of homogenized Canadian monthly surface air temperature for climate trend analysis, J. Geophys. Res., 117, D18110, doi:10.1029/2012JD017859. Wan, H., X. L. Wang, V. R. Swail, 2010: Homogenization and trend analysis of Canadian near-surface wind speeds. Journal of Climate, 23, 1209-1225. Wan, H., X. L. Wang, V. R. Swail, 2007: A quality assurance system for Canadian hourly pressure data. J. Appl. Meteor. Climatol., 46, 1804-1817. Wang, X.L, Y. Feng, L. A. Vincent, 2013. Observed changes in one-in-20 year extremes of Canadian surface air temperatures. Atmosphere-Ocean. Doi:10.1080/07055900.2013.818526. 2022-02-22 Environment and Climate Change Canada Lucie.Vincent@ec.gc.ca Nature and EnvironmentScience and Technologysurface air temperature; precipitation; surface pressure; surface wind speedWeather and ClimateProvide Climate Information Products and ServicesExpand Scientific Knowledge for Climate Monitoring and PredictionNational (CA)ClimateClimate change Adjusted and Homogenized Canadian Climate Data (AHCCD) ENHTML https://www.canada.ca/en/environment-climate-change/services/climate-change/science-research-data/climate-trends-variability/adjusted-homogenized-canadian-data.html Adjusted and Homogenized Canadian Climate Data (AHCCD) FRHTML https://www.canada.ca/fr/environnement-changement-climatique/services/changements-climatiques/recherche-donnees/tendances-variabilite-climatiques/donnees-canadiennes-ajustees-homogeneisees.html View Data MartHTML https://dd.weather.gc.ca/climate/ahccd View Data MartHTML https://dd.meteo.gc.ca/climate/ahccd Climate Data ViewerHTML https://climate-viewer.canada.ca/climate-maps.html Climate Data ViewerHTML https://visualiseur-climatique.canada.ca/cartes-climatiques.html AHCCD StationsWMS https://geo.weather.gc.ca/geomet-climate?service=WMS&version=1.3.0&request=GetCapabilities&layer=AHCCD.STATIONS AHCCD StationsWMS https://geo.weather.gc.ca/geomet-climate?lang=fr&service=WMS&version=1.3.0&request=GetCapabilities&layer=AHCCD.STATIONS AHCCD StationsWFS https://geo.weather.gc.ca/geomet-beta/features/collections/ahccd-stations AHCCD AnnualWFS https://geo.weather.gc.ca/geomet-beta/features/collections/ahccd-annual AHCCD SeasonalWFS https://geo.weather.gc.ca/geomet-beta/features/collections/ahccd-seasonal AHCCD TrendsWFS https://geo.weather.gc.ca/geomet-beta/features/collections/ahccd-trends AHCCD MonthlyWFS https://geo.weather.gc.ca/geomet-beta/features/collections/ahccd-monthly Climate Data Extraction ToolHTML https://climate-change.canada.ca/climate-data/#/adjusted-station-data View ECCC Data Mart (English)HTML http://data.ec.gc.ca/data/climate/scientificknowledge/adjusted-and-homogenized-canadian-climate-data-ahccd View ECCC Data Mart (French)HTML http://data.ec.gc.ca/data/climate/scientificknowledge/adjusted-and-homogenized-canadian-climate-data-ahccd?lang=fr Data Collection MethodologyPDF http://data.ec.gc.ca/data/climate/scientificknowledge/adjusted-and-homogenized-canadian-climate-data-ahccd/AHCCD_-_READ_ME_Technical_doc_EN.pdf Data Collection MethodologyPDF http://data.ec.gc.ca/data/climate/scientificknowledge/adjusted-and-homogenized-canadian-climate-data-ahccd/AHCCD_-_READ_ME_Technical_doc_FR.pdf

The data consist of monthly, seasonal and annual means of homogenized daily maximum, minimum and mean surface air temperatures for more than 330 locations in Canada; monthly, seasonal and annual totals of adjusted daily rainfall, snowfall and total precipitation for more than 460 locations; homogenized monthly, seasonal and annual means of hourly surface wind speed at more than 110 locations; monthly, seasonal and annual means of hourly station and sea level pressure adjusted for more than 630 locations. The data are given for the entire period of observation. Please refer to the papers below for detailed information regarding the procedures for homogenization and adjustment.

References

Mekis, É. and L.A. Vincent, 2011: An overview of the second generation adjusted daily precipitation dataset for trend analysis in Canada. Atmosphere-Ocean, 49(2), 163-177.

Vincent, L. A., X. L. Wang, E. J. Milewska, H. Wan, F. Yang, and V. Swail, 2012. A second generation of homogenized Canadian monthly surface air temperature for climate trend analysis, J. Geophys. Res., 117, D18110, doi:10.1029/2012JD017859.

Wan, H., X. L. Wang, V. R. Swail, 2010: Homogenization and trend analysis of Canadian near-surface wind speeds. Journal of Climate, 23, 1209-1225.

Wan, H., X. L. Wang, V. R. Swail, 2007: A quality assurance system for Canadian hourly pressure data. J. Appl. Meteor. Climatol., 46, 1804-1817.

Wang, X.L, Y. Feng, L. A. Vincent, 2013. Observed changes in one-in-20 year extremes of Canadian surface air temperatures. Atmosphere-Ocean. Doi:10.1080/07055900.2013.818526.

Data and Resources

Contact Information

Electronic Mail Address: Lucie.Vincent@ec.gc.ca

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