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. 2000-01-01 2018-10-02 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 http://dd.weather.gc.ca/climate/ahccd View Data MartHTML http://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

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.

Resources

Resource Name Resource Type Format Language Links
Adjusted and Homogenized Canadian Climate Data (AHCCD) EN Dataset HTML English Access
Adjusted and Homogenized Canadian Climate Data (AHCCD) FR Dataset HTML French Access
View Data Mart Dataset HTML English Access
View Data Mart Dataset HTML French Access
Climate Data Viewer Application HTML English Access
Climate Data Viewer Application HTML French Access
AHCCD Stations Web Service WMS English Access
AHCCD Stations Web Service WMS French Access
AHCCD Stations Web Service WFS English
French
Access
AHCCD Annual Web Service WFS English
French
Access
AHCCD Seasonal Web Service WFS English
French
Access
AHCCD Trends Web Service WFS English
French
Access
AHCCD Monthly Web Service WFS English
French
Access
Climate Data Extraction Tool Application HTML English
French
Access
View ECCC Data Mart (English) Web Service HTML English Access
View ECCC Data Mart (French) Web Service HTML French Access

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