Results 91 to 100 of about 1,495 (203)

Emissions From Interior Alaskan Thermokarst Lakes [PDF]

, 2019
The lakes that form via ice-rich permafrost thaw emit CH4 and CO2 to the atmosphere from previously frozen ancient permafrost sources. Despite this potential to positively feedback to climate change, lake carbon emission sources are not well understood ...
M. Schweiger, Czimczik, CI, C. D. Elder, X. Xu, Xu, X, Elder, CD, Crook, ED, Anthony, KM Walter, E. D. Crook, Lam, B, Walker, J, B. Lam, Schweiger, M, J. Walker, K. M. Walter Anthony, C. I. Czimczik   +15 more
core   +1 more source

The evolution of methane production rates from young to mature thermokarst lakes [PDF]

Biogeosciences
Thermokarst lakes, formed by permafrost thaw in the Arctic, are hotspots for methane (CH4) and carbon dioxide (CO2) emissions and are expected to double permafrost carbon emissions by the end of the century.
Y. Gerera, A. Pellerin, E. Eliani Russak, K. Walter Anthony, N. Hasson, Y. Oved Rosenberg, O. Sivan   +6 more
doaj   +1 more source

Saline Permafrost and Cryopegs as Potentially Important Sources of CO2—Assessing Organic Carbon Mineralization Potentials on the Alaskan Coastal Plain

Global Change Biology, Volume 32, Issue 7, July 2026.
Incubation experiments reveal that potentially carbon‐rich saline permafrost and cryopegs from Arctic coastal plains exhibit CO2 production potentials comparable to active layers. This could substantially shift greenhouse gas balances, as salinity is currently not accounted for in permafrost carbon assessments.
Fabian Seemann, Mackenzie R. Baysinger, Susanne Liebner, Claire Treat, Michael Zech, Maren Jenrich, Guido Grosse, Benjamin M. Jones, Jens Strauss   +8 more
wiley   +1 more source

Small‐Scale Spatial Variability in Carbon Fluxes Driven by Soil and Vegetation Characteristics in Wetlands of Trail Valley Creek, Canada

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract The microtopography of the Arctic tundra and the associated soil moisture (SM) gradient influence the net ecosystem‐atmosphere exchange of methane (CH4) and carbon dioxide (CO2). To quantify fine‐scale variability in a permafrost ecosystem, we measured growing‐season carbon fluxes with closed chambers at Trail Valley Creek, Canada from 2022 to
Kseniia Ivanova, Anna‐Maria Virkkala, Judith Vogt, Aneta Bieniada, Annelen Küchenmeister, Olaf Kolle, Oliver Sonnentag, Bruno Lecavalier, Mathias Göckede   +8 more
wiley   +1 more source

Sedimentology of thermokarst lakes forming within yedoma on the Northern Seward Peninsula [PDF]

, 2012
Thesis (M.S.) University of Alaska Fairbanks, 2012Thermokarst lakes forming in yedoma (organic-rich permafrost containing massive syngenetic Pleistocene ice wedges) play an important role in periglacial landscape evolution.
Farquharson, Louise M.
core  

Shift of thermokarst lakes from methane source to climate-cooling carbon sink [PDF]

, 2014
Thermokarst lakes formed across vast regions of Siberia and Alaska during the last deglaciation and are thought to be a net source of atmospheric methane and carbon dioxide during the Holocene.
Davydov, Sergey, Walter Anthony, K. M., Jones, M. C., Finlay, J. C., Mack, M. C., Frenzel, P., Anthony, P., Chapin, F. S., Zimov, S., Grosse, Guido, Frolking, S.   +10 more
core  

Application of the Red Edge Water Index for Extracting Thermokarst Lakes and Detecting Drainage Events on the Qinghai–Tibet Plateau

Atmosphere
Thermokarst lakes play a crucial role in regulating hydrological, ecological, and biogeochemical processes in permafrost regions. However, due to the limited spatial resolution of earlier satellite imagery, small thermokarst lakes—highly sensitive to ...
Tiantian Li, Guanghao Zhou, Wenhui Liu, Hairui Liu, Jianqiang Zhang, Renjie He, Heming Yang   +6 more
doaj   +1 more source

Does Palsa Thaw in Northern Finland Contribute to Remobilisation of Metals Accumulated in Peat Into Surface Waters?

Land Degradation &Development, Volume 37, Issue 9, Page 4230-4250, 30 May 2026.
ABSTRACT Permafrost is rapidly degrading in the sporadic zone, including palsa mires in Scandinavia. Peatlands in the area have likely accumulated heavy metals from atmospheric deposition of industrial contaminants in the wider region. As the palsa mire chemical composition is not well known, and in other permafrost regions the permafrost thaw may ...
Joanna Katarzyna Jóźwik, Krystyna Kozioł, Marcin Frankowski, Marta Jakubiak, Kamil Nowiński, Mariusz Jędrysek, Danuta Szumińska, Żaneta Polkowska   +7 more
wiley   +1 more source

Thermokarst hazards susceptibility mapping on the Qinghai-Tibet plateau based on a collaborative IV-machine learning architecture

Geocarto International
Accelerating climate change intensifies permafrost degradation and thermokarst hazards on the Qinghai-Tibet Plateau (QTP), threatening ecosystems and infrastructure.
Tiantian Li, Wenhui Liu, Qiong Li, Hairui Liu, Sha Yang, Wei Li, Qing Li, Bingnan Luo, Jianqiang Zhang, Renjie He   +9 more
doaj   +1 more source

Susceptibility Modeling and Potential Risk Analysis of Thermokarst Hazard in Qinghai–Tibet Plateau Permafrost Landscapes Using a New Interpretable Ensemble Learning Method

Atmosphere
Climate change is causing permafrost in the Qinghai–Tibet Plateau to degrade, triggering thermokarst hazards and impacting the environment. Despite their ecological importance, the distribution and risks of thermokarst lakes are not well understood due ...
Yuting Yang, Jizhou Wang, Xi Mao, Wenjuan Lu, Rui Wang, Hao Zheng   +5 more
doaj   +1 more source