Estimating subcatchment runoff coefficients using weather radar and a downstream runoff sensor.
This paper presents a method for estimating runoff coefficients of urban drainage subcatchments based on a combination of high resolution weather radar data and flow measurements from a downstream runoff sensor. By utilising the spatial variability of the precipitation it is possible to estimate the runoff coefficients of the separate subcatchments. The method is demonstrated through a case study of an urban drainage catchment (678 ha) located in the city of Aarhus, Denmark. The study has proven that it is possible to use corresponding measurements of the relative rainfall distribution over the catchment and downstream runoff measurements to identify the runoff coefficients at subcatchment level.
Aalborg University, Department of Civil Engineering, Denmark E-mail: ma@civil.aau.dk.
Malte
M
Ahm
Søren
S
Thorndahl
Michael R
MR
Rasmussen
Lene
L
Bassø
D002947:Cities; D003718:Denmark; D008962:Models, Theoretical; D011825:Radar; D011891:Rain; D014872:Water Movements; D014881:Water Supply