Results 181 to 190 of about 125,890 (374)
Potential for Abrupt Changes in Atmospheric Methane [PDF]
Methane (CH4) is the second most important greenhouse gas that humans directly influence, carbon dioxide (CO2) being first. Concerns about methane’s role in abrupt climate change stem primarily from (1) the large quantities of methane stored as solid ...
Archer, David+3 more
core +1 more source
ABSTRACT Research in geocryology is currently principally concerned with the effects of climate change on permafrost terrain. The motivations for most of the research are (1) quantification of the anticipated net emissions of CO2 and CH4 from warming and thaw of near‐surface permafrost and (2) mitigation of effects on infrastructure of such warming and
Christopher R. Burn+29 more
wiley +1 more source
Shrubs Strongly Influence Snow Properties in Two Subarctic Watersheds
ABSTRACT Understanding changes in snow distribution in permafrost ecosystems is fundamental to predicting their response to future climate change. The expansion of tall shrubs into tundra ecosystems can trap snow and insulate permafrost ecosystems during the winter, but the overall insulation effect is dependent upon many ecosystem properties. To study
Emma Lathrop+9 more
wiley +1 more source
Permafrost or Permanently Frozen Ground and Related Engineering Problems
Robert F. Black, Siemon William Muller
openalex +2 more sources
Microbial Ecology of Permafrost Soils: Populations, Processes, and Perspectives
ABSTRACT Permafrost microbial research has flourished in the past decades, due in part to improvements in sampling and molecular techniques, but also the increased focus on the permafrost greenhouse gas feedback to climate change and other ecological processes in high latitude and alpine permafrost soils.
Mark P. Waldrop+33 more
wiley +1 more source
Heat Conduction with Phase Change in Permafrost Modules of Vegetation Models [PDF]
We consider the problem of heat conduction with phase change, that is essential for permafrost modeling in Land Surface Models and Dynamic Global Vegetation Models. These models require minimal computational effort and an extremely robust solver for large-scale, long-term simulations.
arxiv
Parallel Splitting and Decomposition Method for Computations of Heat Distribution in Permafrost [PDF]
A mathematical model, numerical algorithm and program code for simulation and long-term forecasting of changes in permafrost as a result of operation of a multiple well pad of northern oil and gas field are presented.
Filimonov, M., Vaganova, N.
core
Model Studies Of Rapid Driving Of Piles Into Permafrost [PDF]
Jacques Charest+2 more
openalex +1 more source
ABSTRACT We present an innovative approach to understanding permafrost degradation processes through the application of new environment‐based particle image velocimetry (E‐PIV) to time‐lapse imagery and correlation with synchronous temperature and rainfall measurements.
Muhammad Waqas Khan+5 more
wiley +1 more source
ABSTRACT Permafrost is undergoing rapid changes due to climate warming, potentially exposing a vast reservoir of carbon to be released to the atmosphere, causing a positive feedback cycle. Despite the importance of this feedback, its specifics remain poorly constrained, because representing permafrost dynamics still poses a significant challenge for ...
Heidrun Matthes+18 more
wiley +1 more source