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

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

Description for Map

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

On 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 spring precipitation from 1979 to 2016. Average spring precipitation has increased in much of southern Canada, and northwestern Canada and decreased in much of northern Canada, and the east coast. The ecoprovinces with the greatest increase in precipitation include 06.5, 13.1, and 13.2. The ecoprovinces with the greatest decrease in precipitation include 05.1, 06.3, and 06.4.

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. Spring data are from March to May.

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
Spring precipitation change, 1979 to 2016
Table summary
This table displays the results of Spring 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	-0.4^{Note E: Use with caution}
1.2	Southern Arctic Cordillera	-19.8^Note *
2.1	Sverdrup Islands	1.9^Note **
2.2	Ellesmere Basin	1.4^{Note E: Use with caution}
2.3	Victoria Lowlands	-2.2^{Note E: Use with caution}
2.4	Parry Channel Plateau	1.4^{Note E: Use with caution}
2.5	Boothia–Foxe Shield	-4.6^{Note E: Use with caution}
2.6	Baffin Uplands	-11.4^Note **
2.7	Foxe–Boothia Lowlands	5.6^{Note E: Use with caution}
3.1	Amundsen Lowlands	-5.5^{Note E: Use with caution}
3.2	Keewatin Lowlands	-6.9^{Note E: Use with caution}
3.3	Ungava–Belcher	-13.6^{Note E: Use with caution}
4.1	Mackenzie Foothills	3.2^{Note E: Use with caution}
4.2	Great Bear Lowlands	1.2^{Note E: Use with caution}
4.3	Hay–Slave Lowlands	-7.0^{Note E: Use with caution}
5.1	Western Taiga Shield	-11.3^Note *
5.2	Eastern Taiga	-20.9^{Note E: Use with caution}
5.3	Labrador Uplands	-32.2^{Note E: Use with caution}
5.4	Whale River Lowland	-25.7^Note **
6.1	Western Boreal Shield	4.1^{Note E: Use with caution}
6.2	Mid-Boreal Shield	21.1^{Note E: Use with caution}
6.3	Eastern Boreal Shield	-39.7^Note *
6.4	Newfoundland	-52.9^Note *
6.5	Lake of the Woods	66.3^Note **
6.6	Southern Boreal Shield	1.9^{Note E: Use with caution}
7.1	Appalachian–Acadian Highlands	7.8^{Note E: Use with caution}
7.2	Northumberland Lowlands	-17.1^{Note E: Use with caution}
7.3	Fundy Uplands	-51.1^Note *
8.1	Great Lakes–St. Lawrence Lowlands	15.1^{Note E: Use with caution}
8.2	Huron–Erie Plains	2.9^{Note E: Use with caution}
9.1	Boreal Foothills	-1.8^{Note E: Use with caution}
9.2	Central Boreal Plains	-4.1^{Note E: Use with caution}
9.3	Eastern Boreal Plains	3.6^{Note E: Use with caution}
10.1	Eastern Prairies	51.2^Note *
10.2	Parkland Prairies	19.8^Note **
10.3	Central Grassland	17.4^{Note E: Use with caution}
11.1	Northern Yukon Mountains	3.6^{Note E: Use with caution}
11.2	Old Crow–Eagle Plains	3.0^{Note E: Use with caution}
11.3	Ogilvie Mountains	0.6^{Note E: Use with caution}
11.4	Mackenzie–Selwyn Mountains	5.2^{Note E: Use with caution}
12.1	Wrangel Mountains	-37.5^Note *
12.2	Northern Boreal Cordillera	0.7^{Note E: Use with caution}
12.3	Southern Boreal Cordillera	-2.4^{Note E: Use with caution}
12.4	Western Boreal Cordillera	-6.7^{Note E: Use with caution}
13.1	Georgia Depression	31.3^{Note E: Use with caution}
13.2	Southern Coastal Mountains	31.3^{Note E: Use with caution}
13.3	Northern Coastal Mountains	-7.8^{Note E: Use with caution}
14.1	Northern Montane Cordillera	10.9^{Note E: Use with caution}
14.2	Central Montane Cordillera	11.6^{Note E: Use with caution}
14.3	Southern Montane Cordillera	15.1^{Note E: Use with caution}
14.4	Columbia Montane Cordillera	18.0^{Note E: Use with caution}
15.1	Hudson Bay Coastal Plains	-7.5^{Note E: Use with caution}
15.2	Hudson–James Lowlands	5.3^{Note E: Use with caution}
^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:
Spring precipitation change, by ecoprovince, 1979 to 2016

Archived Content

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

Archived Content

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