The future of Alaskan wildfire detailed in new climate model study
Climate change is altering patterns of wildfire activity in Alaska, making fires larger and more common in some areas with historically low fire activity. Wildfires can be difficult to predict because they are affected by intricate interactions among factors including climate, ecology and weather. But a better idea of which fire pathways are more likely is important for future fire forecasting,…
New climate model study offers insights into the future of Alaskan wildfire activity. Research by Jeremy Littell and colleagues reveals that climate change is causing larger and more frequent fires in regions that previously experienced low fire activity. By analyzing temperature and precipitation data from multiple climate models, the team used the ALFRESCO landscape model to simulate potential changes in fire-vegetation dynamics from the 21st century.
Their findings, published in Earth's Future, indicate that the median annual area burned by wildfire in Alaska could more than double under high emissions scenarios. Interestingly, areas currently with less wildfire, such as the Alaskan Arctic and western Alaska, may see up to an eightfold increase in fire activity. As ecosystems adapt to the changing climate, deciduous trees are expected to replace spruce species in many regions, further altering fire dynamics.
While there remains uncertainty surrounding the future of Alaskan wildfires, the study emphasizes the importance of diverse vegetation in reducing fire severity. Maintaining a mix of ages, species, and spatial coverage of vegetation through management strategies like suppression, controlled burns, and fuel treatments may prove beneficial in mitigating future fire risks.
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