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Towards flash-flood prediction in the dry Dead Sea region utilizing radar rainfall information by Efrat Morin; Yael Jacoby; Shilo Navon; Erez Bet-Halachmi is a Environmental Science article available to read on EtoBox.

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Flash-flood warning models can save lives and protect various kinds of infrastructure. In dry climate regions, rainfall is highly variable and can be of high-intensity. Since rain gauge networks in such areas are sparse, rainfall information derived from weather radar systems can provide useful input for flashflood models. This paper presents a flash-flood warning model which utilizes radar rainfall data and applies it to two catchments that drain into the dry Dead Sea region. Radar-based quantitative precipitation estimates (QPEs) were derived using a rain gauge adjustment approach, either on a daily basis (allowing the adjustment factor to change over time, assuming available real-time gauge data) or using a constant factor value (derived from rain gauge data) over the entire period of the analysis. The QPEs served as input for a continuous hydrological model that represents the main hydrological processes in the region, namely infiltration, flow routing and transmission losses. The infiltration function is applied in a distributed mode while the routing and transmission loss functions are applied in a lumped mode. Model parameters were found by calibration based on the 5 years o

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Author

Efrat Morin; Yael Jacoby; Shilo Navon; Erez Bet-Halachmi

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0309-1708)

Published

2009

Language

EN

Field

Environmental Science (Physical Sciences)