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How to study a swiftly melting climate disaster

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 20/10/2026, 10:35:24 UTC.

Briefings

A team of Northern Arizona University students and staff collected permafrost cores from a research plot in Denali National Park, Alaska, during a July 2016 wildfire. The fire burned 35,000 acres and crossed two survey grids established in 2001, allowing researchers to observe how the blaze altered vegetation, carbon, and permafrost depth. Andrew Haverdink, a graduate student, drilled a core from frozen soil, revealing dark, rich permafrost at least a foot deep. This direct observation provides critical data on how wildfires and fires interact with permafrost loss, challenging models that previously suggested carbon uptake from 'Arctic greening' would offset soil emissions.

Key points

• Andrew Haverdink, a Northern Arizona University graduate student, drilled a permafrost core from frozen soil in Denali National Park, Alaska, during a July 2016 wildfire.
• The wildfire burned 35,000 acres and crossed two survey grids established in 2001, enabling researchers to directly observe how the fire altered permafrost depth and vegetation.

Context

Northern Arizona University researchers are studying how wildfires and permafrost loss interact in the Arctic-boreal region. Direct observations from high-latitude fires are helping scientists understand cascading climate feedback effects, challenging models that previously suggested carbon uptake from 'Arctic greening' would offset soil emissions.

Limitations

Evidence is limited to a single field survey from late June 2013 and a single July 2016 wildfire event. The study relies on direct observations from a specific plot and does not include satellite, lidar, or greenhouse-gas tower data from the broader region. Uncertainty remains regarding the long-term net carbon balance and the exact mechanisms driving permafrost thawing in this specific fire context.

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