The flow duration curve (FDC) is a hydrologically meaningful representation of the statistical distribution of daily streamflows. The complexity of processes contributing to the FDC introduces challenges for the direct exploration of physical controls on FDC. In this paper, the controls of climate and catchment characteristics on FDC are explored using a stochastic framework that enables construction of the FDC from three components of streamflow: fast and slow flow (during wet days) and slow flow during dry days. The FDC during wet days (FDCw) is computed as the statistical sum of the fast flow duration curve (FFDC) and the slow flow duration curve (SFDCw), considering their dependency. FDC is modeled as the mixture distribution of FDCwand the slow flow duration curve during dry days (SFDCd), by considering the fraction of wet days (
- Award ID(s):
- 1331940
- NSF-PAR ID:
- 10401595
- Date Published:
- Journal Name:
- Hydrology and Earth System Sciences
- Volume:
- 21
- Issue:
- 1
- ISSN:
- 1607-7938
- Page Range / eLocation ID:
- 65 to 81
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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