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Enable high-resolution, real-time ensemble simulation and data assimilation of flood inundation using distributed GPU parallelization by Junyu Wei; Xiangyu Luo; Haocheng Huang; Weihong Liao; Xiaohui Lei; Jianshi Zhao; Hao Wang is a Environmental Science article available to read on EtoBox.
What is Enable high-resolution, real-time ensemble simulation and data assimilation of flood inundation using distributed GPU parallelization about?
Numerical modeling of the intensity and evolution of flood events are affected by multiple sources of uncertainty such as precipitation and land surface conditions. To quantify and curb these uncertainties, an ensemble-based simulation and data assimilation model for pluvial flood inundation is constructed. The shallow water equation is decoupled in the x and y directions, and the inertial form of the Saint-Venant equation is chosen to realize fast computation. The probability distribution of the input and output factors is described using Monte Carlo samples. Subsequently, a particle filter is incorporated to enable the assimilation of hydrological observations and improve prediction accuracy. To achieve high-resolution, real-time ensemble simulation, heterogeneous computing technologies based on CUDA (compute unified device architecture) and a distributed storage multi-GPU (graphics processing unit) system are used. Multiple optimization skills are employed to ensure the parallel efficiency and scalability of the simulation program. Taking an urban area of Fuzhou, China as an example, a model with a 3-m spatial resolution and 4.0 million units is constructed, and 8 Tesla P100 GPU
Who reads Enable high-resolution, real-time ensemble simulation and data assimilation of flood inundation using distributed GPU parallelization?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Junyu Wei; Xiangyu Luo; Haocheng Huang; Weihong Liao; Xiaohui Lei; Jianshi Zhao; Hao Wang
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)