Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092114 |
Polar drift in the 1990s explained by terrestrial water storage changes | |
S. Deng; S. Liu; X. Mo; L. Jiang; P. Bauer‐; Gottwein | |
2021-03-22 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Secular polar drift underwent a directional change in the 1990s, but the underlying mechanism remains unclear. In this study, polar motion observations are compared with geophysical excitations from the atmosphere, oceans, solid Earth, and terrestrial water storage (TWS) during the period of 1981‐2020 to determine major drivers. When contributions from the atmosphere, oceans, and solid Earth are removed, the residual dominates the change in the 1990s. The contribution of TWS to the residual is quantified by comparing the hydrological excitations from modeled TWS changes in two different scenarios. One scenario assumes that the TWS change is stationary over the entire study period, and another scenario corrects the stationary result with actual glacier mass change. The accelerated ice melting over major glacial areas drives the polar drift towards 26° E for 3.28 mas/yr after the 1990s. The findings offer a clue for studying past climate‐driven polar motion. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/321021 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | S. Deng,S. Liu,X. Mo,et al. Polar drift in the 1990s explained by terrestrial water storage changes[J]. Geophysical Research Letters,2021. |
APA | S. Deng,S. Liu,X. Mo,L. Jiang,P. Bauer‐,&Gottwein.(2021).Polar drift in the 1990s explained by terrestrial water storage changes.Geophysical Research Letters. |
MLA | S. Deng,et al."Polar drift in the 1990s explained by terrestrial water storage changes".Geophysical Research Letters (2021). |
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