Publication Abstracts
Asoka et al. 2017
Asoka, A., T. Gleeson,
, and V. Mishra, 2017: Relative contribution of monsoon precipitation and pumping to changes in groundwater storage in India. Nat. Geosci., 10, no. 2, 109-117, doi:10.1038/ngeo2869.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 and increased by 1 to 2 cm/yr 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.
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BibTeX Citation
@article{as07000h, author={Asoka, A. and Gleeson, T. and Wada, Y. and Mishra, V.}, title={Relative contribution of monsoon precipitation and pumping to changes in groundwater storage in India}, year={2017}, journal={Nat. Geosci.}, volume={10}, number={2}, pages={109--117}, doi={10.1038/ngeo2869}, }
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RIS Citation
TY - JOUR ID - as07000h AU - Asoka, A. AU - Gleeson, T. AU - Wada, Y. AU - Mishra, V. PY - 2017 TI - Relative contribution of monsoon precipitation and pumping to changes in groundwater storage in India JA - Nat. Geosci. VL - 10 IS - 2 SP - 109 EP - 117 DO - 10.1038/ngeo2869 ER -
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