| 来源类型 | Article
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| 规范类型 | 其他
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| DOI | 10.1038/nclimate3001
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| Fate of water pumped from underground and contributions to sea-level rise. |
| Wada Y; Lo MH; Yeh PJF; Reager JT; Famiglietti JS; Wu R-J; Tseng Y-H
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| 发表日期 | 2016
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| 出处 | Nature Climate Change 6 (8): 777-780
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| 出版年 | 2016
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| 语种 | 英语
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| 摘要 | The contributions from terrestrial water sources to sea-level rise, other than ice caps and glaciers, are highly uncertain and heavily debated.. Recent assessments indicate that groundwater depletion (GWD) may become the most important positive terrestrial contribution over the next 50 years, probably equal in magnitude to the current contributions from glaciers and ice caps6. However, the existing estimates assume that nearly 100% of groundwater extracted eventually ends up in the oceans. Owing to limited knowledge of the pathways and mechanisms governing the ultimate fate of pumped groundwater, the relative fraction of global GWD that contributes to sea-level rise remains unknown. Here, using a coupled climate–hydrological model simulation, we show that only 80% of GWD ends up in the ocean. An increase in runoff to the ocean accounts for roughly two-thirds, whereas the remainder results from the enhanced net flux of precipitation minus evaporation over the ocean, due to increased atmospheric vapour transport from the land to the ocean. The contribution of GWD to global sea-level rise amounted to 0.02 (±0.004) mm yr−1 in 1900 and increased to 0.27 (±0.04) mm yr−1 in 2000. This indicates that existing studies have substantially overestimated the contribution of GWD to global sea-level rise by a cumulative amount of at least 10 mm during the twentieth century and early twenty-first century. With other terrestrial water contributions included, we estimate the net terrestrial water contribution during the period 1993–2010 to be +0.12 (±0.04) mm yr−1, suggesting that the net terrestrial water contribution reported in the IPCC Fifth Assessment Report report is probably overestimated by a factor of three. |
| 主题 | Water (WAT)
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| URL | http://pure.iiasa.ac.at/id/eprint/13009/
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| 来源智库 | International Institute for Applied Systems Analysis (Austria)
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| 引用统计 |
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/130556
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推荐引用方式
GB/T 7714 |
Wada Y,Lo MH,Yeh PJF,et al. Fate of water pumped from underground and contributions to sea-level rise.. 2016.
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Fate%20of%20water%20pumped%20from%20underground%20and.pdf
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