Climate Change Impacts on Fire Return Intervals in Alaska and Canada's Boreal Forests

In recent years, Alaska has seen the largest (2004), second largest (2015), third largest (2005) and sixth largest (2009) fire years since 1940, and observed increases in area burned in Canada during the last four decades are linked with warming summer season temperatures. To the surprise and concern of fire and resource managers, some of these fires burned across fire scars from the previous decade or decades, an uncharacteristic phenomenon in boreal forests. This project is assessing the ecological and management implications of repeat fires. This funding to the National Park Service and USGS is contributing to a large effort to model the conditions under which new fires burn into older fires, the behavior of...

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