Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090961 |
Complex patterns of Antarctic Ice Sheet Mass Change Resolved by Time‐dependent Rate Modeling of GRACE and GRACE Follow‐on Observations | |
Lei Wang; James L. Davis; Ian M. Howat | |
2020-12-11 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | The Antarctic ice sheet (AIS) is a major contributor to current global sea‐level change and the largest potential source of future sea‐level change. Variability in AIS mass balance on a wide range of spatiotemporal scales obscures secular trends, increasing the uncertainty of projections. We introduce a novel approach for analyzing satellite gravity observations to estimate time‐varying mass change rates, and resolve the timescales and amplitudes of rate fluctuations. The new analysis resolves a higher degree of variability than expected over all AIS sectors. Quantifying rate fluctuations on a range of timescales, we demonstrate that loss from the West Antarctic Ice Sheet (WAIS) is characterized by a multi‐decadal trend, whereas variations of the East Antarctic Ice Sheet (EAIS) are dominated by substantial, short‐term accumulation changes that impact AIS mass balance as whole. These complex spatiotemporal variabilities highlight the need to include stochastic processes in estimates of loss rates. |
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/308246 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Lei Wang,James L. Davis,Ian M. Howat. Complex patterns of Antarctic Ice Sheet Mass Change Resolved by Time‐dependent Rate Modeling of GRACE and GRACE Follow‐on Observations[J]. Geophysical Research Letters,2020. |
APA | Lei Wang,James L. Davis,&Ian M. Howat.(2020).Complex patterns of Antarctic Ice Sheet Mass Change Resolved by Time‐dependent Rate Modeling of GRACE and GRACE Follow‐on Observations.Geophysical Research Letters. |
MLA | Lei Wang,et al."Complex patterns of Antarctic Ice Sheet Mass Change Resolved by Time‐dependent Rate Modeling of GRACE and GRACE Follow‐on Observations".Geophysical Research Letters (2020). |
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