Results 71 to 80 of about 4,057 (184)

North American Circum-Arctic Permafrost Degradation Observation Using Sentinel-1 InSAR Data

Remote Sensing
In the context of global warming, the accelerated degradation of circum-Arctic permafrost is releasing a significant amount of carbon. InSAR can indirectly reflect the degradation of permafrost by monitoring its deformation.
Shaoyang Guan, Chao Wang, Yixian Tang, Lichuan Zou, Peichen Yu, Tianyang Li, Hong Zhang   +6 more
doaj   +1 more source

Embracing the Heterogeneity Within Particulate and Mineral‐Associated Organic Matter for the Next Generation of Soil Carbon Questions

Global Change Biology, Volume 32, Issue 11, November 2026.
Measurements of particulate (POM) and mineral‐associated organic matter (MAOM) alone can collapse within‐fraction variability to a central tendency. Embracing this internal heterogeneity enables more complex questions, in which POM and MAOM are viewed as composite distributions characterized through refined fractionation or orthogonal measurements ...
Sam J. Leuthold, Jocelyn M. Lavallee, M. Francesca Cotrufo   +2 more
wiley   +1 more source

Permafrost degradation, subarctic Canadian Shield

, 2019
Recent ground temperature and observational data for lithalsas in the subarctic Canadian Shield (permafrost mounds of ice-rich, fine-grained sediments) are examined in the context of an inventory of thermokarst ponding between 1945 and 2005. Results show that many lithalsas are thermally and physically degrading, and widespread thermokarst primarily ...
P D Morse, S A Wolfe, T L McWade, S V Kokelj   +3 more
openaire   +1 more source

Petagram‐Scale Dissolved Organic Carbon Stocks in Alaskan Permafrost Soils

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The pan‐Arctic permafrost region hosts vast amounts of soil organic carbon, a pool increasingly susceptible to climate‐driven changes. Dissolved organic carbon (DOC) is a key component of this carbon pool. However, its stocks and fluxes remain poorly understood due to limited measurements and challenges of tracking subsurface fluxes across ...
Yongni He, Songfan He, Jack A. Hutchings, Mikhail Kanevskiy, Yongge Sun, Xiaowen Zhang   +5 more
wiley   +1 more source

Monitoring the Degradation of Island Permafrost Using Time-Series InSAR Technique: A Case Study of Heihe, China

Sensors, 2019
In the context of global warming, the air temperature of the Heihe basin in Northeast China has increased significantly, resulting in the degradation of the island permafrost.
Sai Wang, Bing Xu, Wei Shan, Jiancun Shi, Zhiwei Li, Guangcai Feng   +5 more
doaj   +1 more source

Sandy Turbidity Current Acts as a Rusty Carbon Pump at the Shelf Edge

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Sandy turbidity currents (STCs) efficiently sequester organic carbon (OC) through rapid burial. Yet our understanding of OC preservation within STC deposits remains far less constrained, especially considering STC deposits as an inferred major sink for iron‐bound OC (Fe‐OC), a long‐term stabilized form of OC.
Zhuoyue Zhang, Chenglong Wang, Tianyu Chen, Rui Bao, Zicheng Chen, Xiao Huang, Yang Zhang, Xinqing Zou   +7 more
wiley   +1 more source

Current Status of Permafrost Degradation

International Journal for Research in Applied Science and Engineering Technology
Abstract: Permafrost, the permanently frozen ground is defined as any type of ground-from soil to sediment to rock- that remains at or below 0° C for at least two consecutive years. At present, permafrost occurs on one quarter of the exposed land surfaces of the earth, but the permafrost extent and its estimate have been changing rapidly. Under warming
openaire   +1 more source

Hydrological Extremes Increase Water‐Resource Constraints Under Climate Change

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Hydrological extremes are projected to intensify under climate change, yet their implications for water scarcity remain poorly understood. We use a multi‐model ensemble to assess how changes in hydrological low and high extremes will constrain renewable water for human use across 520 major river basins worldwide.
Siao Sun, Hui Liu, Mário Franca, Ali Pourzangbar, Qiuhong Tang   +4 more
wiley   +1 more source

Northern permafrost represents a limit on the northward shift of climatically feasible agricultural frontiers under future warming

Communications Earth & Environment
Global warming is expected to shift crop suitability northward, but the role of permafrost remains unclear. Here we integrate permafrost degradation impacts to project the suitability of seven major crops across the Northern Hemisphere (30°N–83°N).
Song Xu, Cunde Xiao, Jonas Jägermeyr, Vladimir E. Romanovsky, Zhao Zhang, Jianping Duan, Bo Su, Tong Zhang   +7 more
doaj   +1 more source

Disposition Model for Permafrost Degradation in Mountainous Regions

Permafrost and Periglacial Processes
ABSTRACT Permafrost is a widespread thermal phenomenon in Arctic and high mountain regions that, in combination with steep terrain, exerts a key control on slope stability. Its degradation in response to climatic warming can modify the likelihood and timing of rockfall, debris flow and related mass movements. Robust information on the
Peter Mani, Simon Allen, Mathias Bavay, Nils Hählen, Markus Stoffel   +4 more
openaire   +2 more sources