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Last Update: 10/05/2026 at 5:00 AM EST
Ecosystem Feedbacks and Climate Warming
Coverage from CBC News, Canada's National Observer, and others
As the climate warms, thawing permafrost, wetlands, inland waters, and wildfires can release additional greenhouse gases, reinforcing the warming that drives them.
Researchers estimate that these natural-system feedbacks could add 0.2–0.4°C of warming by 2100 across different emissions scenarios, with permafrost accounting for about half of the estimated emissions. Many climate models do not fully represent these processes, which could affect projections of future warming and the remaining carbon budget. The feedbacks do not make emissions cuts irrelevant: the estimates indicate that limiting emissions can constrain their contribution.
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Researchers at Stanford University, Environmental Defense Fund and Spark Climate Solutions reported in Environmental Research Letters that climate-driven emissions from wildfires, permafrost and wetlands could increase warming this century by 20 to 30 percent, with major implications for Canada.
9/11/2026 • Climate Science & Impacts • General
Researchers led by Sam Abernethy reported that warming ecosystems could add 0.2C to 0.4C to global temperatures by 2100 through emissions from permafrost, wetlands, freshwater systems, and wildfires.
9/17/2026 • Climate Science & Impacts • General
Researchers from Stanford University and partner organizations published a study in Environmental Research Letters estimating that natural-system feedbacks could add 0.2-0.4°C to global warming by 2100.
9/10/2026 • Climate Science & Impacts • General