Does the complexity in temporal precipitation disaggregation matter for a lumped hydrological model?
| Autor: | Müller-Thomy, H., Sikorska-Senoner, A.E. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
precipitation disaggregation Time series Runoff Stream flow Daily precipitations precipitation-runoff modelling Hydrological modeling Floods Climate models Flood control Mesoscale catchments Disaggregation Precipitation characteristics ddc:550 Runoff modelling Catchments effective daily precipitation duration Precipitation time series Multiplicative cascades multiplicative cascade model |
| Zdroj: | Hydrological Sciences Journal 2019 (2019) |
| Popis: | Flood peaks and volumes are essential design variables and can be simulated by precipitation–runoff (P–R) modelling. The high-resolution precipitation time series that are often required for this purpose can be generated by various temporal disaggregation methods. Here, we compare a simple method (M1, one parameter), focusing on the effective precipitation duration for flood simulations, with a multiplicative cascade model (M2, 32/36 parameters). While M2 aims at generating realistic characteristics of precipitation time series, M1 aims only at accurately reproducing flood variables by P–R modelling. Both disaggregation methods were tested on precipitation time series of nine Swiss mesoscale catchments. The generated high-resolution time series served as input for P–R modelling using a lumped HBV model. The results indicate that differences identified in precipitation characteristics of disaggregated time series vanish when introduced into the lumped hydrological model. Moreover, flood peaks were more sensitive than flood volumes to the choice of disaggregation method. © 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. |
| Databáze: | OpenAIRE |
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