期刊
WATER
卷 12, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/w12040969
关键词
MEDUSA2.0; stormwater quality; total suspended solids; particulate and dissolved metals; rainfall characteristics
资金
- Christchurch City Council
- Waterways Centre for Freshwater Management
- University of Canterbury's Department of Civil and Natural Resources Engineering and Scholarships Office
Understanding the amount of pollutants contributed by impermeable urban surfaces during rain events is necessary for developing effective stormwater management. A process-based pollutant load model, named Modelled Estimates of Discharges for Urban Stormwater Assessments (MEDUSA), was further developed (MEDUSA2.0; Christchurch, New Zealand) to include simulations of dissolved metal loadings and improve total suspended solids (TSS) loading estimations. The model uses antecedent dry days, rainfall pH, average event intensity and duration to predict sediment and heavy metal loads generated by individual surfaces. The MEDUSA2.0 improvements provided a moderate to strong degree of fit to observed sediment, copper, and zinc loads for each modelled road and roof surface type. The individual surface-scale modelling performed by MEDUSA2.0 allows for identification of specific source areas of high pollution for targeted surface management within urban catchments.
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