Impacts of spatiotemporal resolutions of precipitation on flood event simulation based on multimodel structures – a case study over the Xiang River basin in China
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Published:2024-04-11
Issue:7
Volume:28
Page:1665-1686
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ISSN:1607-7938
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Container-title:Hydrology and Earth System Sciences
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language:en
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Short-container-title:Hydrol. Earth Syst. Sci.
Author:
Zhu QianORCID, Qin Xiaodong, Zhou Dongyang, Yang TiantianORCID, Song Xinyi
Abstract
Abstract. Accurate flood event simulation and prediction, enabled by effective models and reliable data, are critical for mitigating the potential risk of flood disaster. This study aims to investigate the impacts of spatiotemporal resolutions of precipitation on flood event simulation in a large-scale catchment of China. We use high-spatiotemporal-resolution Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG) products and a gauge-based product as precipitation forcing for hydrologic simulation. Three hydrological models (HBV, SWAT and DHSVM) and a data-driven model (long short-term memory (LSTM) network) are utilized for flood event simulation. Two calibration strategies are carried out, one of which targets matching of the flood events, with peak discharge exceeding 8600 m3 s−1 between January 2015 and December 2017, and the other one is the conventional strategy for matching the entire streamflow time series. The results indicate that the event-based calibration strategy improves the performance of flood event simulation compared with a conventional calibration strategy, except for DHSVM. Both hydrological models and LSTM yield better flood event simulation at a finer temporal resolution, especially in flood peak simulation. Furthermore, SWAT and DHSVM are less sensitive to the spatial resolutions of IMERG, while the performance of LSTM obtains improvement when degrading the spatial resolution of IMERG-L. Generally, LSTM outperforms the hydrological models in most flood events, which implies the usefulness of the deep learning algorithms for flood event simulation.
Funder
National Natural Science Foundation of China
Publisher
Copernicus GmbH
Reference76 articles.
1. Abbaspour, K. C., Vejdani, M., and Haghighat, S.: SWAT-CUP Calibration and Uncertainty Programs for SWAT, in: Modsim 2007: International Congress on Modelling and Simulation, 1603–1609, ISBN 978-097584004-7, 2007. 2. AghaKouchak, A., Nakhjiri, N., and Habib, E.: An educational model for ensemble streamflow simulation and uncertainty analysis, Hydrol. Earth Syst.Sci., 17, 445–452, https://doi.org/10.5194/hess-17-445-2013, 2013. 3. Akbari Asanjan, A., Yang, T., Hsu, K., Sorooshian, S., Lin, J., and Peng, Q.: Short-Term Precipitation Forecast Based on the PERSIANN System and LSTM Recurrent Neural Networks, J. Geophys. Res.-Atmos., 123, 12543–12563, https://doi.org/10.1029/2018jd028375, 2018. 4. Alfredsen, K. and Hailegeorgis, T. T.: Comparative evaluation of performances of different conceptualisations of distributed HBV runoff response routines for prediction of hourly streamflow in boreal mountainous catchments, Hydrol. Res., 46, 607–628, https://doi.org/10.2166/nh.2014.051, 2015. 5. Apip, Sayama, T., Tachikawa, Y., and Takara, K.: Spatial lumping of a distributed rainfall-sediment-runoff model and its effective lumping scale, Hydrol. Process., 26, 855–871, https://doi.org/10.1002/hyp.8300, 2012.
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