永冻土蕴含约1.5万亿吨碳，储量约为大气中碳总量的两倍，其融化释放的温室气体可能引发严重的气候反馈循环1。2023年加拿大野火释放的碳量已超过该国化石燃料排放总和，凸显了北极火灾带来的紧迫威胁1。根据科学预测，到2100年，火灾驱动的永冻土融化可能释放约80亿吨二氧化碳当量1。全球范围内，火灾排放自2001年以来增加了60%，其中北方森林排放增加更是达到了三倍1。
为应对这一危机，国际研究团队正在部署多种干预措施1。其中，FireSat卫星星座预计于年底前开始提供全球每日两次的火灾数据，最终可实现每20分钟更新一次的监测能力1。除卫星技术外，研究人员还在探索文化焚烧技术和自主灭火直升机等创新手段1。经济上，2022年发表的研究论文估计每公制吨碳的额外灭火成本约12.63美元1。目前，在育空平地国家野生动物保护区正进行试点项目，在资源充足且能于72小时内控制火情的条件下实施灭火1。尽管阿拉斯加产生全国约50%的野火排放，该地区获得的联邦灭火资金却仅占全国的4%1，凸显了资金支持与实际需求的巨大落差。
Researchers are launching coordinated efforts to prevent and control wildfires across the Arctic, driven by growing alarm over the release of massive carbon stores locked in permafrost.1 Permafrost holds approximately 1.5 trillion tons of carbon—roughly twice the amount currently in the atmosphere—making fire prevention in frozen regions a critical climate priority.1 The urgency intensified after 2023, when Canadian wildfires released more carbon than the entire country's fossil fuel emissions for that year.1
The stakes are extraordinarily high. By 2100, fire-driven permafrost thawing could release about 8 billion metric tons of carbon dioxide equivalent.1 Global fire emissions have surged 60 percent since 2001, with emissions from northern forests tripling over the same period.1 A particularly severe example occurred in 2007 when the Anaktuvuk River fire burned for nearly three months and released more than 2 million metric tons of carbon.1 The challenge is compounded by funding disparities: Alaska generates roughly 50 percent of the nation's wildfire emissions but receives only 4 percent of federal firefighting resources.1
International research teams are deploying multiple intervention strategies to address the crisis. The FireSat satellite constellation is expected to begin providing global fire data twice daily by year-end, with potential capability to update observations every 20 minutes.1 Researchers are also piloting controlled burning techniques and developing autonomous firefighting helicopters alongside advocacy for expanded policy and financial support.1 In a pilot project at Yukon Flats National Wildlife Refuge, teams have agreed to suppress fires when resources permit and when blazes can be contained within 72 hours.1 According to a 2022 Science Advances study, the additional cost of suppressing one metric ton of carbon runs approximately $12.63.1
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