Climate Research


Temperature and Precipitation Trends in Southwestern Saskatchewan Tell a Complex Long-Term Climate Change Story

Authors: Sierra Rayne, Kaya Forest

Historical climate trends in southwestern Saskatchewan, Canada were analyzed using parametric linear regression and non-parametric Mann-Kendall trend detection approaches over various timeframes between 1886 and 2010. We find substantial variability for this region in the significance and magnitude of any temporal trends for daily maximum, minimum, and mean temperatures on an annual basis - as well as during the winter, spring, summer, and autumn periods - that is dependent on the time period chosen. Similar results are obtained for precipitation data in the study area. The results demonstrate that temperature and precipitation trends in southwestern Saskatchewan tell a complex long-term climate change story, containing substantial temporal trend heterogeneity, thereby necessitating caution when interpreting long-term climatic data - particularly in the context of larger-scale regional or global observations and predictions.

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[v1] 2013-01-24 22:11:00

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