| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1038/ngeo2869 |
| Relative contribution of monsoon precipitation and pumping to changes in groundwater storage in India. | |
| Asoka A; Gleeson T; Wada Y; Mishra V | |
| 发表日期 | 2017 |
| 出处 | Nature Geoscience 10 (2): 109-117 |
| 出版年 | 2017 |
| 语种 | 英语 |
| 摘要 | The depletion of groundwater resources threatens food and water security in India. However, the relative influence of groundwater pumping and climate variability on groundwater availability and storage remains unclear. Here we show from analyses of satellite and local well data spanning the past decade that long-term changes in monsoon precipitation are driving groundwater storage variability in most parts of India either directly by changing recharge or indirectly by changing abstraction. We find that groundwater storage has declined in northern India at the rate of 2 cm yr−1 and increased by 1 to 2 cm yr−1 in southern India between 2002 and 2013. We find that a large fraction of the total variability in groundwater storage in north-central and southern India can be explained by changes in precipitation. Groundwater storage variability in northwestern India can be explained predominantly by variability in abstraction for irrigation, which is in turn influenced by changes in precipitation. Declining precipitation in northern India is linked to Indian Ocean warming, suggesting a previously unrecognized teleconnection between ocean temperatures and groundwater storage. |
| 主题 | Water (WAT) |
| 关键词 | Climate-change impacts Developing world Hydrology Water resources |
| URL | http://pure.iiasa.ac.at/id/eprint/14233/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/131002 |
| 推荐引用方式 GB/T 7714 | Asoka A,Gleeson T,Wada Y,et al. Relative contribution of monsoon precipitation and pumping to changes in groundwater storage in India.. 2017. |
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