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May 18, 2016
Atmospheric Model Component of an Atmospheric-Hydrological Model-Based Real-Time Flood Forecasting System for the Kızılırmak River Basin in Turkey
Authors: K. Ishida, A. Ercan, R. Chen, N. Ohara, M. L. Kavvas, Murat Dağdeviren, and Bülent SelekAuthor Affiliations
Publication: World Environmental and Water Resources Congress 2016
Abstract
A real-time flood forecasting system was developed over the Kızılırmak river basin (KRB) in Turkey by means of a physically-based atmospheric-hydrological model. The real-time flood forecasting system utilizes the weather research and forecasting (WRF) model and the WRF data assimilation (WRFDA) system as its atmospheric component. Real-time global atmospheric forecasting data are obtained from global forecast system (GFS) operated by the national centers for environmental prediction (NCEP). The real-time global atmospheric forecasting data are utilized as initial and boundary conditions of the atmospheric component. The atmospheric component synthesizes real-time upper-air sounding data and ground observations into the initial conditions by the three-dimensional variational (3DVAR) data assimilation system. After the assimilation, the atmospheric component dynamically downscales the real-time global atmospheric forecasting data into 4 km horizontal resolution and hourly temporal resolution. The real-time flood forecasting system is in operation now. Some preliminary forecasted results by the atmospheric component are shown in this presentation.
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© 2016 American Society of Civil Engineers.
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Published online: May 18, 2016
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K. Ishida
Dept. of Civil and Environmental Engineering, Univ. of California, Davis, CA 95616.
A. Ercan
Dept. of Civil and Environmental Engineering, Univ. of California, Davis, CA 95616.
R. Chen
Bay Delta Office, California Dept. of Water Resources.
N. Ohara
Dept. of Civil and Architectural Engineering, Univ. of Wyoming.
M. L. Kavvas
Dept. of Civil and Environmental Engineering, Univ. of California, Davis, CA 95616.
Murat Dağdeviren
The General Directorate of State Hydraulic Works (DSI), Ankara, Turkey.
Bülent Selek
The General Directorate of State Hydraulic Works (DSI), Ankara, Turkey.
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