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The combined effect of greenhouse gases and aerosols are expected to change regional and global climate and climate-related parameters such as temperature, precipitation, soil moisture and sea level. Warming is already being observed in the Canadian North and parts of the circumpolar Arctic. The Mackenzie Basin, a 1.8 million sq. Alaska and Siberia have warmed at similar rates. Canadian scientists looking at the impact of this warming in the Mackenzie, report historically low water levels, localized melting of permafrost, and increased erosion and landslides.