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Impact of spatial and temporal resolution of rainfall inputs on urban hydrodynamic modelling outputs: A multi-catchment investigation
- Source :
- Journal of Hydrology, Journal of Hydrology, Elsevier, 2015, ⟨10.1016/j.jhydrol.2015.05.035⟩, Journal of Hydrology, 2015; Corrected Proof
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- Urban catchments are typically characterised by high spatial variability and fast runoff processes resulting in short response times. Hydrological analysis of such catchments requires high resolution precipitation and catchment information to properly represent catchment response. This study investigated the impact of rainfall input resolution on the outputs of detailed hydrodynamic models of seven urban catchments in North-West Europe. The aim was to identify critical rainfall resolutions for urban catchments to properly characterise catchment response. Nine storm events measured by a dual-polarimetric X-band weather radar, located in the Cabauw Experimental Site for Atmospheric Research (CESAR) of the Netherlands, were selected for analysis. Based on the original radar estimates, at 100 m and 1 min resolutions, 15 different combinations of coarser spatial and temporal resolutions, up to 3000 m and 10 min, were generated. These estimates were then applied to the operational semi-distributed hydrodynamic models of the urban catchments, all of which have similar size (between 3 and 8 km2), but different morphological, hydrological and hydraulic characteristics. When doing so, methodologies for standardising model outputs and making results comparable were implemented. Results were analysed in the light of storm and catchment characteristics. Three main features were observed in the results: (1) the impact of rainfall input resolution decreases rapidly as catchment drainage area increases; (2) in general, variations in temporal resolution of rainfall inputs affect hydrodynamic modelling results more strongly than variations in spatial resolution; (3) there is a strong interaction between the spatial and temporal resolution of rainfall input estimates. Based upon these results, methods to quantify the impact of rainfall input resolution as a function of catchment size and spatial–temporal characteristics of storms are proposed and discussed. publisher: Elsevier articletitle: Impact of spatial and temporal resolution of rainfall inputs on urban hydrodynamic modelling outputs: A multi-catchment investigation journaltitle: Journal of Hydrology articlelink: http://dx.doi.org/10.1016/j.jhydrol.2015.05.035 content_type: article copyright: Copyright © 2015 The Authors. Published by Elsevier B.V. ispartof: Journal of Hydrology vol:531 issue:2 pages:389-407 status: published
- Subjects :
- Rainfall
Environmental Engineering
010504 meteorology & atmospheric sciences
Spatial–temporal resolution
radar rainfall
urban hydrology
0207 environmental engineering
Drainage basin
02 engineering and technology
01 natural sciences
law.invention
urban drainage
law
MD Multidisciplinary
X-band radar
Precipitation
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology
Radar
020701 environmental engineering
0105 earth and related environmental sciences
Water Science and Technology
Hydrology
geography
geography.geographical_feature_category
Storm
spatialtemporal resolution
13. Climate action
Urban hydrology
Temporal resolution
[SDE]Environmental Sciences
Environmental science
Weather radar
Spatial variability
hydrodynamic models
Surface runoff
Subjects
Details
- ISSN :
- 00221694
- Volume :
- 531
- Database :
- OpenAIRE
- Journal :
- Journal of Hydrology
- Accession number :
- edsair.doi.dedup.....ce8b48a2d412f88e96dded10e916e14c