Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL087565 |
Wildfire initiated talik development exceeds current thaw projections: Observations and models from Alaska’s continuous permafrost zone | |
David M. Rey; Michelle A. Walvoord; Burke J. Minsley; Brian A. Ebel; Clifford I. Voss; Kamini Singha | |
2020-07-08 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | As the Arctic warms and wildfire occurrence increases, talik formation in permafrost regions is projected to expand and affect the cycling of water and carbon. Yet, few unified field and modeling studies have examined this process in detail, particularly in areas of continuous permafrost. We address this gap by presenting multi‐method, multi‐seasonal geophysical measurements of permafrost and liquid‐water content that reveal substantial talik development in response to recent wildfire in continuous permafrost of boreal Alaska. Results from observation‐based cryohydrogeologic model simulations suggest that pre‐disturbance subsurface conditions are key factors influencing thaw response to fire disturbance and air‐temperature warming. Our high‐resolution integrated study illustrates enhanced vulnerability of boreal continuous permafrost, with observed talik formation that exceeds coarse‐scale model projections by ~100 years even under the most extreme future emissions scenario. Results raise important scaling questions for representing extreme permafrost thaw phenomena of growing widespread importance in large‐scale predictive models. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/283296 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | David M. Rey,Michelle A. Walvoord,Burke J. Minsley,等. Wildfire initiated talik development exceeds current thaw projections: Observations and models from Alaska’s continuous permafrost zone[J]. Geophysical Research Letters,2020. |
APA | David M. Rey,Michelle A. Walvoord,Burke J. Minsley,Brian A. Ebel,Clifford I. Voss,&Kamini Singha.(2020).Wildfire initiated talik development exceeds current thaw projections: Observations and models from Alaska’s continuous permafrost zone.Geophysical Research Letters. |
MLA | David M. Rey,et al."Wildfire initiated talik development exceeds current thaw projections: Observations and models from Alaska’s continuous permafrost zone".Geophysical Research Letters (2020). |
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