Sea ice in Canada

Description

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Sea ice in Canada indicators provide information on the area of sea in Canada covered by ice during the summer season. Sea ice area represents the portion of marine area covered by ice. The area is evaluated using the Canadian Ice Service Digital Archive and is expressed in thousands or millions of square kilometres. The Sea ice in Canada indicators are provided for the Northern Canadian Waters, by sub-region and for the Northwest Passage. The indicators also present trends in total sea ice area and multi-year sea ice area. Multi-year sea ice is defined as sea ice that has survived at least one summer's melt. Information is provided in a number of formats including: static and interactive maps, charts and graphs, HTML and CSV data tables and downloadable reports. See the supplementary documentation for the data sources and details on how the data were collected and how the indicator was calculated. Canadian Environmental Sustainability Indicators: https://www.canada.ca/environmental-indicators

Resources

Name Format Description Link
Average summer sea ice area, Northern Canadian Waters, 1968 to 2024 - English (CSV; 1.37 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-1-average-summer-sea-ice-NCW-en.csv
Average summer sea ice area, Northern Canadian Waters, 1968 to 2024 - French (CSV; 1.51 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-1-moyenne-glace-mer-ete-ENC-fr.csv
Sub-region summer sea ice area trends, Northern Canadian Waters, 1968 to 2024 - English (CSV; 4.66 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-2-summer-trends-NCW-en.csv
Sub-region summer sea ice area trends, Northern Canadian Waters, 1968 to 2024 - French (CSV; 4.75 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-2-tendances-ete-ENC-fr.csv
Sub-region September sea ice area decadal trends, Canadian Arctic domain, 1968 to 2024 - English (CSV; 3.48 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-3-September-trends-Arctic-en.csv
Sub-region September sea ice area decadal trends, Canadian Arctic domain, 1968 to 2024 - French (CSV; 3.89 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-3-tendances-september-Arctique-fr.csv
Average multi-year sea ice area, Canadian Arctic domain, 1968 to 2024 - English (CSV; 1.36 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-4-summer-MYI-area-Arctic-en.csv
Average multi-year sea ice area, Canadian Arctic domain, 1968 to 2024 - French (CSV; 1.51 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-4-superficie-pluriannuelle-ete-Arctique-fr.csv
Sub-region multi-year sea ice area trends, Canadian Arctic domain, 1968 to 2024 - English (CSV; 2.93 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-5-summer-MYI-trends-Arctic-en.csv
Sub-region multi-year sea ice area trends, Canadian Arctic domain, 1968 to 2024 - French (CSV; 3.03 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-5-tendances-pluriannuelle-ete-Arctique-fr.csv
Sub-region September multi-year sea ice area decadal trends, Canadian Arctic domain, 1968 to 2024 - English (CSV; 3.46 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-6-September-MYI-trends-Arctic-en.csv
Sub-region September multi-year sea ice area decadal trends, Canadian Arctic domain, 1968 to 2024 - French (CSV; 3.81 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-6-tendances-pluriannuelle-septembre-Arctique-fr.csv
Average total and multi-year sea ice area, Canada's Northwest Passage, 1968 to 2024 - English (CSV; 3.07 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-7-Northwest-passage-en.csv
Average total and multi-year sea ice area, Canada's Northwest Passage, 1968 to 2024 - French (CSV; 3.52 kB) CSV https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/sea-ice/2025/figure-7-passage-Nord-Ouest-fr.csv
Sea ice in Canada - English HTML https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/sea-ice.html
Data sources and methods – English HTML https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/sea-ice.html#DSM
Sea ice in Canada - French HTML https://www.canada.ca/fr/environnement-changement-climatique/services/indicateurs-environnementaux/glace-mer.html
Data sources and methods – French HTML https://www.canada.ca/fr/environnement-changement-climatique/services/indicateurs-environnementaux/glace-mer.html#DSM

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