Inside the quest to combat Arctic fires and save the planet’s frozen carbon

In the summer of 2021, a wildfire erupted in a dense forest of black spruce and peeling birch trees on the University of Alaska, Fairbanks campus. The blaze, likely ignited by lightning, spread across the dry tundra of feather mosses and lichen before reaching 12 feet in height, producing a towering smoke plume. While fire agencies arrived days after the fire had begun, the Yankovich Road Fire became a focal point for researchers at the Alaska Fire Science Consortium.

In 2024, the organization transformed the area into an educational walking trail with interpretive signs, providing a tangible demonstration of the impacts of climate change on permafrost.

Hilary Shook, the consortium's coordinator, utilized a thaw probe to measure the depth of permafrost thaw near the burn scar. The tool, a T-shaped metal rod, was plunged deep into the ground, indicating that the fire had already caused significant thawing. This phenomenon demonstrates the escalating problem of permafrost thawing due to climate change, setting off a feedback loop that exacerbates the release of greenhouse gases, fueling more fires, and causing more permafrost loss.

As permafrost thaws, the organic matter within it begins to decompose, releasing potent greenhouse gases like carbon dioxide and methane, amplifying global warming. In Canada, 2023 saw wildfires emitting more carbon than the country's entire fossil fuel sector. However, many of these megafires occur in remote regions where policy dictates letting them burn unless they threaten human habitation.

Researchers worldwide are collaborating to understand the consequences of escalating wildfires and the potential to mitigate their impacts. Organizations like Woodwell Climate Research Center, the Polis Institute for Ecological Governance, and the Alaska Venture Fund are investing in a multimillion-dollar initiative called North Fire, which aims to explore various strategies to combat Arctic-boreal wildfires and raise public awareness.

Although controversial, these interventions could prove crucial in preserving one of Earth's essential carbon sinks amidst the growing threat of climate change.