Spatial-temporal patterns of snow cover in western Canada
The availability of spatially and temporally extensive SWE data enables a better understanding of the nature of space-time trends in snow cover, changes in these trends and linking these trends to underlying landscape and terrain characteristics. To address these interests, we quantify the spatial pattern of SWE by applying a local measure of spatial autocorrelation to 25 years of mean February SWE derived from passive microwave retrievals. Using a method for characterizing the temporal trends in the spatial pattern of SWE, temporal trends and variability in spatial autocorrelation are quantified. Results indicate that within the Canadian Prairies, extreme values of SWE are becoming more spatially coherent, with potential impacts on water availability, and hazards such as flooding. These results also highlight the need for Canadian ecological management units that consider winter conditions.
Document Type: Research Article
Affiliations: 1: Department of Geography, University of Victoria, Victoria, British Columbia, Canada V8W 3R4 ( ), Email: [email protected] 2: Department of Geography, University of Victoria, Victoria, British Columbia, Canada V8W 3R4 ( ), Email: [email protected] 3: Canadian Forest Service, Pacific Forestry Centre, Natural Resources Canada, Victoria, British Columbia, Canada V8Z 1M5 ( ), Email: [email protected] 4: Climate Research Division, Atmospheric Science and Technology Directorate, Environment Canada, Downsview, Ontario, Canada M3H 5T4 ( ), Email: [email protected]
Publication date: 2009-12-01