Study on the sensitivity of urban inundation and watershed flood simulation to rainfall data spatial resolution

被引：3

作者：

Chen, Guangzhao ^{[1
]}

Hou, Jingming ^{[1
]}

Liu, Yuan ^{[2
]}

Li, Xuan ^{[2
]}

Qiao, Xianling ^{[1
]}

Li, Donglai ^{[1
]}

机构：

[1] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Shaanxi, Peoples R China

[2] PowerChina Northwest Engn Corp Ltd, Xian 710065, Shaanxi, Peoples R China

来源：

URBAN CLIMATE | 2024年 / 57卷

基金：

中国国家自然科学基金;

关键词：

Rainfall data spatial resolution; Rainfall center; Urban inundation; Watershed flood; Hydrological-hydrodynamic coupled model; FLASH-FLOOD; VARIABILITY; RUNOFF; IMPACT;

D O I：

10.1016/j.uclim.2024.102125

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Under the background of climate change and urbanization, the localized characteristics of rainfall are becoming increasingly pronounced. The spatial resolution of rainfall data often fails to meet the requirements for accurately describing spatial distribution. Conversely, using fine spatial resolution rainfall data result in resource wastage. Based on observed and designed rainfall data, this work progressively increases grid size through spatial interpolation algorithm to achieve lower spatial resolution. By integrating spatial parameters such as rainfall center and regional characteristics, a rainfall dataset with varying spatial resolutions is constructed. This rainfall dataset is used to drive the hydrological-hydrodynamic coupled model, analyzing the influence of changes in rainfall spatial resolution on urban inundation and flood, and identifying the optimal spatial resolution of rainfall data. The results show that for urban inundation simulation, as the spatial resolution of rainfall decreases, the inundation water volume, inundation area, and inundation water depth all increase, revealing a tendency to overestimate inundation risk. For watershed flood simulation, as the spatial resolution decreases, the peak flow decreases, and the discharge process show a more flattened trend. The optimal spatial resolution of rainfall data for urban inundation simulation is 0.5 km, while for watershed flood simulation, it is 4 km.

引用

页数：24

共 50 条

[31] Integrated rainfall–runoff and flood inundation modeling for flash flood risk assessment under data scarcity in arid regions: Wadi Fatimah basin case study, Saudi Arabia [J].

Amro Elfeki ;

Milad Masoud ;

Burhan Niyazi .

Natural Hazards, 2017, 85 :87-109

[32] A study on compound flood prediction and inundation simulation under future scenarios in a coastal city [J].

Zhong, Ming ;

Xiao, Lu ;

Li, Xiaodi ;

Mei, Yiwen ;

Jiang, Tao ;

Song, Lixiang ;

Chen, Xiaohong .

JOURNAL OF HYDROLOGY, 2024, 628

[33] Effects of rainfall data resolution on watershed-scale model performance in predicting runoff [J].

Wang, Huiliang ;

Li, Xuyong ;

Hao, Shaonan .

JOURNAL OF WATER AND CLIMATE CHANGE, 2015, 6 (02) :227-240

[34] Multi-scenario flash flood hazard assessment based on rainfall-runoff modeling and flood inundation modeling: a case study [J].

Zhang, Yue ;

Wang, Ying ;

Zhang, Yunxia ;

Luan, Qingzu ;

Liu, Heping .

NATURAL HAZARDS, 2021, 105 (01) :967-981

[35] Extracting inundation patterns from flood watermarks with remote sensing SfM technique to enhance urban flood simulation: The case of Ayutthaya, Thailand [J].

Meesuk, Vorawit ;

Vojinovic, Zoran ;

Mynett, Arthur E. .

COMPUTERS ENVIRONMENT AND URBAN SYSTEMS, 2017, 64 :239-253

[36] Spatial and Temporal Patterns in Nonstationary Flood Frequency across a Forest Watershed: Linkage with Rainfall and Land Use Types [J].

Huang, Xu-dong ;

Wang, Ling ;

Han, Pei-pei ;

Wang, Wen-chuan .

FORESTS, 2018, 9 (06)

[37] Sensitivity of various topographic data in flood management: Implications on inundation mapping over large data-scarce regions [J].

Mohanty, Mohit Prakash ;

Nithya, S. ;

Nair, Akhilesh S. ;

Indu, J. ;

Ghosh, Subimal ;

Bhatt, Chandra Mohan ;

Rao, Goru Srinivasa ;

Karmakar, Subhankar .

JOURNAL OF HYDROLOGY, 2020, 590

[38] Spatial Scale Effect of Surface Routing and Its Parameter Upscaling for Urban Flood Simulation Using a Grid-Based Model [J].

Cao, Xuejian ;

Lyu, Heng ;

Ni, Guangheng ;

Tian, Fuqiang ;

Ma, Yu ;

Grimmond, C. S. B. .

WATER RESOURCES RESEARCH, 2020, 56 (02)

[39] Sensitivity analysis of SWAT model to the spatial rainfall distribution and watershed subdivision in streamflow simulations in the Mediterranean context: a case study in the Joumine watershed. Tunisia. [J].

Aouissi, Jalel ;

Benabdallah, Sihem ;

Chabaane, Zohra Lili ;

Cudennec, Christophe .

2013 5TH INTERNATIONAL CONFERENCE ON MODELING, SIMULATION AND APPLIED OPTIMIZATION (ICMSAO), 2013,

[40] On quality of radar rainfall with respect to temporal and spatial resolution for application to urban areas [J].

Yoon, Jungsoo ;

Joo, Jingul ;

Yoo, Chulsang ;

Hwang, Seokhwan ;

Lim, Sanghun .

METEOROLOGICAL APPLICATIONS, 2017, 24 (01) :19-30

← 1 2 3 4 5 →