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Last Update: 10/26/2026 at 11:33 PM EST
Permafrost Thaw
Coverage from Mercury News, R&D World, and others
Permafrost thaw affects more than the stability of frozen ground: it can change drainage and terrain, reshape plant and microbial communities, and alter how carbon moves between soils, rivers, and the atmosphere.
Laboratory work has found that thaw can sharply increase ground permeability, while field studies show that changing vegetation and microbial activity can shift carbon dioxide and methane emissions. Some thawing river catchments also take up carbon through chemical weathering, making the overall carbon balance complex. Measurements, climate records, and models help researchers understand these interacting effects and their implications for cold-region ecosystems and communities.
Looking Back
256 Day Timeline
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All Articles27 articles
Important
Scientists studying Arctic permafrost reported in recent studies that thaw-driven greenhouse gas emissions could add about 0.25 degrees Celsius of warming by 2100, with infrastructure impacts across Alaska and other Arctic regions.
10/1/2026 • Climate Science & Impacts • General
A Science Advances paper finds updated northern permafrost land-carbon modeling could shift the region to a carbon source around 2055 under high emissions, affecting 2 C budgets.
6/19/2026 • Climate Science & Impacts • General
Researchers from Umeå University and East China Normal University find rock weathering increasingly offsets river CO2 emissions as permafrost degrades on the Qinghai-Tibet Plateau.
6/17/2026 • Climate Science & Impacts • General
University of Gothenburg research estimates northern permafrost thaw after the last Ice Age released over 300 petagrams of carbon and contributed about 52 ppm CO2 to deglaciation increases.
6/7/2026 • Climate Science & Impacts • General
University of Tübingen researchers measured seasonally varying carbon dioxide and methane fluxes in Stordalen mire, Sweden, finding grass dominance increases greenhouse gas emissions during permafrost thaw.
3/26/2026 • Climate Science & Impacts • General
Researchers led by Paul Palmer found that Arctic warming increased Siberian methane emissions from 2010 to 2023, with permafrost thaw dominating western Siberia and wildfires dominating eastern Siberia.
9/8/2026 • Climate Science & Impacts • General
Researchers including Gustaf Hugelius warn that accelerating permafrost thaw across Siberia, Canada, Alaska, and Europe could release major greenhouse-gas emissions by century's end.
8/20/2026 • Climate Science & Impacts • General
University of Leeds researchers in AGU Earths Future report laboratory evidence that permafrost thaw can increase gas permeability 25 to 100 times, enabling carbon and methane escape in the Arctic.
3/29/2026 • Climate Science & Impacts • General
Nature Climate Change researchers quantified vegetation greenness recovery after retrogressive thaw slumps across Alaska, Canada, Siberia, and the Qinghai-Tibet Plateau, finding much slower recovery at high latitudes and elevations.
3/29/2026 • Climate Science & Impacts • General
Researchers report in 2026 that thawing polar regions could accelerate microbial carbon release, amplifying climate change in Arctic and Antarctic ecosystems.
1/26/2026 • Climate Science & Impacts • General
University of Leeds lab experiments show thawed permafrost can become 25 to 100 times more permeable, potentially accelerating greenhouse-gas escape in the Arctic.
4/4/2026 • Climate Science & Impacts • General
Umeå University and East China Normal University researchers reported chemical rock weathering offsets part of river CO2 emissions across 50 Qinghai-Tibet rivers as permafrost thaws.
6/20/2026 • Climate Science & Impacts • General
An international research team mapped Arctic permafrost thaw using satellite imagery and artificial intelligence in Alaska and other Arctic regions during 2026.
8/26/2026 • Climate Science & Impacts • General
Canadian researchers report permafrost-melt acidification in the Yukon and Mackenzie basins, increasing toxic metal loads and accelerating water-quality decline since 2023.
5/27/2026 • Climate Science & Impacts • General
Satellite, airborne, and drone surveys across 12 retrogressive thaw slump regions found NDVI recovery taking 5-10 years in low-Arctic sites but 35-105 years in high-Arctic and high-elevation areas.
3/29/2026 • Climate Science & Impacts • General
In Alaska's Brooks Range, a Communications Earth & Environment study attributes rust-colored river contamination to permafrost thaw-driven iron release with a seasonal lag and ecosystem impacts.
6/1/2026 • Climate Science & Impacts • General
Researchers including Ingmar Nitze created Lost Lakes to track about 4 million Arctic lakes in near real time and since 2016, using lake changes across the Arctic as indicators of permafrost conditions.
9/23/2026 • Climate Science & Impacts • General
Renae Kerrigan and Tom Glass studied northward-expanding beavers and their potential effects on permafrost near Nome, Alaska, earlier this month.
8/26/2026 • Climate Science & Impacts • General
University of Leeds researchers in Earth's Future report experiments showing thawing Arctic permafrost increases permeability 25 to 100 times, boosting escape of climate-forcing gases.
3/29/2026 • Climate Science & Impacts • General
Vuntut Gwitchin First Nation, Brock University, and Parks Canada documented accelerating permafrost thaw and related landscape changes over two decades in Old Crow Flats, Yukon.
8/18/2026 • Climate Science & Impacts • General
University of Copenhagen and Technical University of Denmark researchers found Greenland midden microbes with pathogens and antimicrobial resistance can be mobilized as permafrost thaws.
6/26/2026 • Climate Science & Impacts • General
Dalhousie researchers map Arctic shallow aquifers to show how warming summers and changing rainfall reshape groundwater and landscape wetness across the Arctic.
1/1/1900 • Climate Science & Impacts • General
In Alaska, researchers attribute orange-stained streams to permafrost thaw mobilizing iron, raising risks for fish and downstream communities as warming continues.
6/7/2026 • Climate Science & Impacts • General
Lise Loktu and Elin Therese Brodholt report in a May 20, 2026 PLOS One study that Arctic warming and coastal erosion are degrading the Likneset whaling site in Svalbard.
5/20/2026 • Climate Science & Impacts • General
Interesting
Permafrost thaw driven by Arctic warming is damaging homes and infrastructure and altering ecosystems in Nain, Nunatsiavut, Labrador.
7/28/2026 • Climate Science & Impacts • General
Researchers report warming permafrost thawing at Corpse Point in Svalbard, degrading whaling burial remains documented since the 1970s.
5/23/2026 • Climate Science & Impacts • General
Researchers studying whaling graves at Likneset, Svalbard, report permafrost degradation and coastal erosion threatening burial integrity as Arctic warming accelerates.
5/22/2026 • Adaptation & Resilience • General