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High Resolution Rainfall Information in Urban Run-off Simulation

Niels Einar Jensen, Lisbeth Pedersen and Soren Overgaard (2006)
DHI Water & Environment; University of Aalborg; Danish Meteorological Institute
DOI: 10.14796/JWMM.R225-05
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Abstract

Local variability in rainfall suggests that precipitation measured by weather radars is necessary for accurate simulation of run-off from urban areas. Short-term spatial variability in accumulated rainfall measured by conventional rain gauges has shown that rainfall information must be established in a 100 by 100 m grid or smaller. Small radars are an economical solution to this demand.

As a part of a Local Area Weather Radar (LAWR) calibration exercise 15 km south of Aarhus, Denmark, nine high-resolution rain gauges were used to measure rainfall within a single radar pixel (500 by 500 m). The measured values indicate up to a 100% variation between neighbouring rain gauges within the pixel over a four day period. The rain gauge data and rainfall estimates from the LAWR radar were feed into a run-off model of the pixel to evaluate the impact of point vs. area estimates of rainfall.

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PAPER INFO

Identification

CHI ref #: R225-05 864
Volume: 14
DOI: 10.14796/JWMM.R225-05
Cite as: CHI JWMM 2006;R225-05

Publication History

Received: N/A
Accepted: N/A
Published: February 15, 2006

Status

# reviewers: 2
Version: Final published

Copyright

© 2006 CHI. Some rights reserved.

The Journal of Water Management Modeling is an open-access (OA) publication. Open access means that articles and papers are available without barriers to all who could benefit from them. Practically speaking, all published works will be available to a worldwide audience, free, immediately on publication.

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JWMM content may not be re-published, either online or in print, without prior written consent of CHI. As such, JWMM can be considered a Gold, Gratis OA journal.


AUTHORS

Niels Einar Jensen

DHI Water & Environment, Aarhus, Denmark, Denmark

Lisbeth Pedersen

University of Aalborg, DK-9000 Aalborg, Denmark

Soren Overgaard

Danish Meteorological Institute, Denmark

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