Articles | Volume 21, issue 9
Hydrol. Earth Syst. Sci., 21, 4495–4516, 2017
https://doi.org/10.5194/hess-21-4495-2017

Special issue: Observations and modeling of land surface water and energy...

Hydrol. Earth Syst. Sci., 21, 4495–4516, 2017
https://doi.org/10.5194/hess-21-4495-2017
Research article
11 Sep 2017
Research article | 11 Sep 2017

Necessary storage as a signature of discharge variability: towards global maps

Kuniyoshi Takeuchi and Muhammad Masood

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Short summary
There are many global maps of hydrology and water resources, but none on necessary storage to smooth out discharge variability. This paper provides a methodology to create such a map, taking the Ganges–Brahmaputra–Meghna basin as an example. Necessary storage is calculated by a new method, intensity–duration–frequency curves of flood and drought (FDC–DDC). Necessary storage serves as a signature of hydrological variability and its geographical distribution provides new insights for hydrology.