How much of AB's climate variability is natural vs. related to climate change | OCS Science Seminar

January 28th 2025 OCS Science Seminar presented by Dr. Dave Suachyn with the University of Regina.
Abstract: The detection of regional climate change relies almost exclusively on the analysis of historical weather observations and output from numerical climate models. Weather stations record both natural variability and anthropogenic climate change. Climate model projections are uncertain. The dominant source of uncertainty for western Canada is the internal natural variability of the regional climate regime. Our tree-ring lab has developed a 1000-year record of the annual and decadal variability in Alberta’s hydroclimate. This unique perspective enables us to distinguish between natural variability and the regional expression of global climate change.