Environmental Thematic Maps and Graphics:
Winter precipitation change, by ecoprovince, 1979 to 2016

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Map: Winter precipitation change, by ecoprovince, 1979 to 2016

Description for Map

The title of this map is “Winter precipitation change, by ecoprovince, 1979 to 2016.” This map provides a visual representation of the change in average winter precipitation in Canada, by ecoprovince, over the time period from 1979 to 2016.

the page, there is one large map of Canada, a legend to the upper right and a scale bar below. The map delineates ecoprovinces with a thin black boundary line and ecoprovinces are labeled with a code. Fine black dashed lines show provincial and territorial boundaries. Below the map, ecoprovince codes and their corresponding names are listed for reference.

The map shows the change in precipitation trends through a colour range of browns and teals. Decrease in precipitation is shown through shades of brown, while increase in precipitation is shown through shades of teal. Grey diagonal hatching is used to indicate ecoprovinces where trends are not significant at the 90% confidence interval or above.

The unit of measurement is millimetres (mm). The legend contains six precipitation categories: greater than or equal to 60 (dark teal), 25 to less than 60 (teal), 0 to less than 25 (light aqua), -10 to less than 0 (beige), -75 to less than -10 (tan), and less than -75 (brown).

The map shows varying trends in winter precipitation from 1979 to 2016. Average winter precipitation has increased in much of southern Canada, and northwestern Canada and decreased in much of northern Canada, and the east coast and west coast. The ecoprovinces with the greatest increase in precipitation include 08.2, 06.6, 06.2, and 06.5. The ecoprovinces with the greatest decrease in precipitation include 14.4, 13.1, and 13.2.

Notes: Statistically significant linear trends are presented at the 90% confidence interval or above. Caution should be used when analyzing trends in the North because of lower climate station densities. Winter data are from December to February.

Sources:
Statistics Canada, Environment and Energy Statistics Division (EESD), 2021, special tabulation based on Wang, S., Y. Yang, Y. Luo and A. Rivera, 2013, “Spatial and seasonal variations in evapotranspiration over Canada's landmass,” Hydrology and Earth System Sciences, Vol. 17, no. 9, pp. 3561-3575, https://doi.org/10.5194/hess-17-3561-2013 (accessed December 1, 2020);
Wang, S., et al., 2014, “A national-scale assessment of long-term water budget closures for Canada’s watersheds,” Journal of Geophysical Research: Atmospheres, Vol. 119, pp. 8712–8725, https://doi.org/10.1002/2014JD021951 (accessed February 1, 2021).

Legend
Precipitation change, 1979 to 2016
Table summary
This table displays the results of Precipitation change. The information is grouped by Colour (appearing as row headers), Precipitation change (mm) (appearing as column headers).
Colour	Precipitation change (mm)
Dark teal	Greater than or equal to 60
Teal	25 to less than 60
Light aqua	0 to less than 25
Beige	-10 to less than 0
Tan	-75 to less than -10
Brown	Less than -75
Grey lines	Trend not statistically significant
Shape	Boundary
Dashed line	Province/territory
Black outline	Ecoprovince

Data
Winter precipitation change, 1979 to 2016
Table summary
This table displays the results of Winter precipitation change. The information is grouped by Code (appearing as row headers), Ecoprovince and Precipitation change, calculated using mm units of measure (appearing as column headers).
Code	Ecoprovince	Precipitation change
Code	Ecoprovince	mm
1.1	Northern Arctic Cordillera	0.2^{Note E: Use with caution}
1.2	Southern Arctic Cordillera	-15.6^Note *
2.1	Sverdrup Islands	0.5^Note **
2.2	Ellesmere Basin	0.2^{Note E: Use with caution}
2.3	Victoria Lowlands	-0.3^{Note E: Use with caution}
2.4	Parry Channel Plateau	3.1^{Note E: Use with caution}
2.5	Boothia–Foxe Shield	-0.6^{Note E: Use with caution}
2.6	Baffin Uplands	-11.0^Note *
2.7	Foxe–Boothia Lowlands	2.3^{Note E: Use with caution}
3.1	Amundsen Lowlands	-3.8^{Note E: Use with caution}
3.2	Keewatin Lowlands	0.7^{Note E: Use with caution}
3.3	Ungava–Belcher	4.3^{Note E: Use with caution}
4.1	Mackenzie Foothills	5.8^{Note E: Use with caution}
4.2	Great Bear Lowlands	1.0^{Note E: Use with caution}
4.3	Hay–Slave Lowlands	6.2^{Note E: Use with caution}
5.1	Western Taiga Shield	-0.6^{Note E: Use with caution}
5.2	Eastern Taiga	-2.9^{Note E: Use with caution}
5.3	Labrador Uplands	-23.8^{Note E: Use with caution}
5.4	Whale River Lowland	-14.7^{Note E: Use with caution}
6.1	Western Boreal Shield	4.0^{Note E: Use with caution}
6.2	Mid-Boreal Shield	25.3^Note *
6.3	Eastern Boreal Shield	-15.3^{Note E: Use with caution}
6.4	Newfoundland	-36.2^{Note E: Use with caution}
6.5	Lake of the Woods	25.5^Note *
6.6	Southern Boreal Shield	56.6^Note *
7.1	Appalachian–Acadian Highlands	42.1^{Note E: Use with caution}
7.2	Northumberland Lowlands	53.5^{Note E: Use with caution}
7.3	Fundy Uplands	42.4^{Note E: Use with caution}
8.1	Great Lakes–St. Lawrence Lowlands	62.3^Note *
8.2	Huron–Erie Plains	45.6^Note **
9.1	Boreal Foothills	-12.5^{Note E: Use with caution}
9.2	Central Boreal Plains	1.9^{Note E: Use with caution}
9.3	Eastern Boreal Plains	17.1^Note **
10.1	Eastern Prairies	21.6^Note *
10.2	Parkland Prairies	12.2^{Note E: Use with caution}
10.3	Central Grassland	6.7^{Note E: Use with caution}
11.1	Northern Yukon Mountains	0.3^{Note E: Use with caution}
11.2	Old Crow–Eagle Plains	0.1^{Note E: Use with caution}
11.3	Ogilvie Mountains	0.5^{Note E: Use with caution}
11.4	Mackenzie–Selwyn Mountains	7.7^{Note E: Use with caution}
12.1	Wrangel Mountains	-27.9^{Note E: Use with caution}
12.2	Northern Boreal Cordillera	3.8^{Note E: Use with caution}
12.3	Southern Boreal Cordillera	-0.1^{Note E: Use with caution}
12.4	Western Boreal Cordillera	-1.3^{Note E: Use with caution}
13.1	Georgia Depression	-95.8^{Note E: Use with caution}
13.2	Southern Coastal Mountains	-108.9^{Note E: Use with caution}
13.3	Northern Coastal Mountains	-31.0^{Note E: Use with caution}
14.1	Northern Montane Cordillera	0.0^{Note E: Use with caution}
14.2	Central Montane Cordillera	-5.5^{Note E: Use with caution}
14.3	Southern Montane Cordillera	-25.3^{Note E: Use with caution}
14.4	Columbia Montane Cordillera	-82.9^Note *
15.1	Hudson Bay Coastal Plains	-1.7^{Note E: Use with caution}
15.2	Hudson–James Lowlands	17.6^Note **
^E use with caution Note * significantly different from reference category (p < 0.05) Return to note * referrer Note significantly different from reference category (p < 0.10) Return to note referrer

Date modified:: 2022-01-25

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Environmental Thematic Maps and Graphics:
Winter precipitation change, by ecoprovince, 1979 to 2016

Archived Content

Environmental Thematic Maps and Graphics: Winter precipitation change, by ecoprovince, 1979 to 2016

Archived Content

Environmental Thematic Maps and Graphics:
Winter precipitation change, by ecoprovince, 1979 to 2016