Global Hydrological Cycles and World Water Resources

@article{Oki2006GlobalHC,
  title={Global Hydrological Cycles and World Water Resources},
  author={Taikan Oki and Shinjiro Kanae},
  journal={Science},
  year={2006},
  volume={313},
  pages={1068 - 1072}
}
Water is a naturally circulating resource that is constantly recharged. Therefore, even though the stocks of water in natural and artificial reservoirs are helpful to increase the available water resources for human society, the flow of water should be the main focus in water resources assessments. The climate system puts an upper limit on the circulation rate of available renewable freshwater resources (RFWR). Although current global withdrawals are well below the upper limit, more than two… 

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