Results 51 to 60 of about 1,002 (181)

Methane emissions from northern lakes under climate change: a review

SN Applied Sciences, 2021
Northern lakes are important sources of CH4 in the atmosphere under the background of permafrost thaw and winter warming. We synthesize studies on thermokarst lakes, including various carbon sources for CH4 emission and the influence of thermokarst ...
Lingling Li, Bin Xue
doaj   +1 more source

Decadal Shifts Towards Higher Riverine Silicon Relative to Nitrogen and Phosphorus Across High Latitudes

Global Biogeochemical Cycles, Volume 40, Issue 7, July 2026.
Abstract High‐latitude systems are warming faster than the global average, altering the rates of silicon (Si) mobilization from terrestrial to aquatic systems. Dissolved Si (DSi) concentration and its ratio with other nutrients exert strong controls on algae blooms in fresh and marine receiving waters, especially in high‐latitude regions where diatoms ...
Joanna C. Carey, Nicholas J. Lyon, Keira Johnson, Pamela L. Sullivan, Sidney A. Bush, Lienne R. Sethna, Ruth Heindel, Pirkko Kortelainen, Hjalmar Laudon, Diane M. McKnight, Amanda Poste, Antti Raike, Kathi Jo Jankowski   +12 more
wiley   +1 more source

Simulation and Prediction of Thermokarst Lake Surface Temperature Changes on the Qinghai–Tibet Plateau

Remote Sensing
Thermokarst lakes are shallow bodies of freshwater that develop in permafrost regions, and they are an essential focus of international permafrost research.
Chengming Zhang, Zeyong Gao, Jing Luo, Wenyan Liu, Mengjia Chen, Fujun Niu, Yibo Wang, Yunhu Shang   +7 more
doaj   +1 more source

Decadal-scale hotspot methane ebullition within lakes following abrupt permafrost thaw

Environmental Research Letters, 2021
Thermokarst lakes accelerate deep permafrost thaw and the mobilization of previously frozen soil organic carbon. This leads to microbial decomposition and large releases of carbon dioxide (CO _2 ) and methane (CH _4 ) that enhance climate warming ...
K M Walter Anthony, P Lindgren, P Hanke, M Engram, P Anthony, R P Daanen, A Bondurant, A K Liljedahl, J Lenz, G Grosse, B M Jones, L Brosius, S R James, B J Minsley, N J Pastick, J Munk, J P Chanton, C E Miller, F J Meyer   +18 more
doaj   +1 more source

Retrogressive Thaw Slump Morphology and Dynamics in Saline Permafrost in Northeast Greenland

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 7, July 2026.
Abstract Saline permafrost occupies a significant portion of permafrost in the Northern Hemisphere and extends several kilometers inland from the present Arctic coastline. However, its thermal conditions, mechanical degradation and geomorphological impacts are poorly understood.
S. Eppinger, T. H. Lorentzen, M. Angelopoulos, T. Ingeman‐Nielsen, D. A. Rudd, M. Marcer, M. Krautblatter   +6 more
wiley   +1 more source

Changes in the Distribution of Thermokarst Lakes on the Qinghai-Tibet Plateau from 2015 to 2020

Remote Sensing
Thermokarst lakes are widely distributed on the Qinghai-Tibet Plateau (QTP). However, owing to the lack of high-precision remote sensing imagery and the difficulty of in situ monitoring of permafrost regions, quantifying the changes in the distribution ...
Rongrong Wei, Xia Hu, Shaojie Zhao
doaj   +1 more source

Plant indication of thermocarst forms in palsa mires in the south of Nature Park Numto (West Siberia)

Социально-экологические технологии, 2019
Currently, palsa mires in the southern limit of circumpolar permafrost zone are characterized by an increased intensity of thermokarst processes. In the south of Nature Park Numto the cyclic character of frozen mound formation was replaced by their ...
E.A. Shishkonankova, N.A. Avetov, T.Yu. Tolpysheva, A.A. Tarlinskaya   +3 more
doaj   +1 more source

C and N Isotopic Fractionation Along Permafrost Profiles: A Theoretical Framework and Empirical Tests Across the Arctic

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 7, July 2026.
Abstract Anticipating the decomposition of permafrost organic matter (OM) following thaw is critical for improving projections of climate‐carbon feedbacks. Stable carbon (C) and nitrogen (N) isotope profiles provide integrated records of the environmental and biogeochemical processes that shaped OM during its accumulation and may therefore improve our ...
Lucas Deschamps, Jennifer Paillassa, Esther Lévesque, Vincent Maire   +3 more
wiley   +1 more source

Effects of Hillslope Thermokarst in Northern Alaska [PDF]

Eos, Transactions American Geophysical Union, 2009
Permafrost thawing is increasing in the Arctic and sub‐Arctic [Osterkamp and Romanovsky, 1996; Osterkamp, 2007] in response to climate warming [Hassol, 2004]. One consequence of thawing permafrost is the development of thermokarst (physical depression of ground surface) because of reduced support of overlying soil [Jorgenson et al., 2006].
Michael N. Gooseff, Andrew Balser, William B. Bowden, Jeremy B. Jones   +3 more
openaire   +1 more source

Enhancing the Advanced Lake Biogeochemistry Model for Application to Thermokarst Lakes on Qinghai‐Tibet Plateau

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract Thermokarst lakes on Qinghai‐Tibet Plateau (QTP) are significant sources of greenhouse gas emissions, yet the underlying governing processes remain poorly understood. This study refines the Advanced Lake Biogeochemistry Model (ALBM) to characterize the unique environmental and biogeochemical processes of QTP thermokarst lakes. Key improvements
Jiahui Lin, Lei Wang, Zeli Tan, Tong Zhang, Hongyu Zhao, Zhiqiang Wei, Qian Xu, Bo Su, Yaru Feng, Hao Cui, Zhiheng Du, Wenxin Zhang, Cunde Xiao   +12 more
wiley   +1 more source