Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL091790 |
The impact of variable ocean temperatures on Totten Glacier stability and discharge | |
F. S. McCormack; J. L. Roberts; D. E. Gwyther; M. Morlighem; T. Pelle; B. K. Galton‐; Fenzi | |
2021-05-04 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | A major uncertainty in Antarctica’s contribution to future sea level rise is the ice sheet response timescales to ocean warming. Totten Glacier drains a region containing 3.9 m global sea level equivalent and has been losing mass over recent decades. We use an ice sheet model coupled to an ice‐shelf cavity combined ocean box and plume model to investigate Totten’s response to variable ocean forcing. Totten’s grounding line is stable for a limited range of ocean temperatures near current observations (i.e. ‐0.95 to ‐0.75°C), with topography influencing the discharge periodicity. For increases of ≥ 0.2°C in temperatures beyond this range, grounding line retreat occurs. Variable ocean forcing can reduce retreat relative to constant forcing, and different variability amplitudes can cause centennial‐scale delays in retreat through interactions with topography. Our results highlight the need for long‐term ocean state observations and to include forcing variability in ice sheet model simulations of future change. |
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/325849 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | F. S. McCormack,J. L. Roberts,D. E. Gwyther,et al. The impact of variable ocean temperatures on Totten Glacier stability and discharge[J]. Geophysical Research Letters,2021. |
APA | F. S. McCormack.,J. L. Roberts.,D. E. Gwyther.,M. Morlighem.,T. Pelle.,...&Fenzi.(2021).The impact of variable ocean temperatures on Totten Glacier stability and discharge.Geophysical Research Letters. |
MLA | F. S. McCormack,et al."The impact of variable ocean temperatures on Totten Glacier stability and discharge".Geophysical Research Letters (2021). |
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