Targeting 60 Fires Could Cut Wildfire Carbon Emissions at $13 per Ton

Context The 2023 Canadian wildfire season ranked fourth worldwide for carbon emissions, behind only India, China and the United States. Wildfires now burn about 750 million hectares each year, and climate change is turning them into a reinforcing feedback loop: higher temperatures spark more fires, which release more carbon, driving further warming.

Key Facts - Sixty fires accounted for nearly 75 % of the burned area in Canada in 2023, releasing 650 teragrams (Tg) of carbon. One teragram equals one million metric tons, so these fires emitted roughly 650 million tons of carbon. - Forest fire emissions average 725 Tg of carbon per year globally; the 2023 Canadian season alone contributed a sizable share of that total. - A preliminary cost analysis for Alaska’s boreal forest suggests that avoiding wildfire‑related CO₂ can be achieved at about $13 per ton of emissions prevented.

Methodology Researchers combined satellite‑derived fire perimeters with atmospheric carbon measurements to attribute emissions to individual fires. They then ranked fires by emitted carbon and identified the top 60 contributors. Cost estimates used a bottom‑up approach: projected expenses for fuel reduction, early detection and rapid response were divided by the amount of carbon those actions would likely prevent, yielding a cost per ton figure.

What It Means Focusing resources on a small subset of high‑impact fires could deliver climate benefits at a price comparable to many renewable energy subsidies. At $13 per ton, the approach is cheaper than most carbon‑capture projects and far less than the social cost of unchecked emissions. Implementing targeted suppression in the identified hotspots could cut a large fraction of the 650 Tg carbon release, slowing the feedback loop that accelerates warming.

Looking Ahead Future work will test the model in Alaska’s boreal forest and refine cost estimates as new detection technologies roll out. Monitoring the effectiveness of targeted interventions will determine whether this strategy can be scaled globally to curb wildfire‑driven climate change.