The International Conference for High Performance Computing, Networking, Storage, and Analysis
The International Conference for High Performance Computing, Networking, Storage, and Analysis
Authors: Junshi Chen and Shenghong Huang (University of Science and Technology of China (USTC), Laoshan Laboratory); Ziyu Zhang, Xiaoyu Hao, and Jun Gu (University of Science and Technology of China); Hong An, Chun Zhao, and Yan Hu (University of Science and Technology of China (USTC), Laoshan Laboratory); Zhanming Wang, Longkui Chen, Yifan Luo, Jineng Yao, Yi Zhang, Yang Zhao, and Zhihao Wang (University of Science and Technology of China); Dongning Jia and Zhao Jin (Laoshan Laboratory); Changming Song and Xisheng Luo (University of Science and Technology of China); and Xiaobin He and Dexun Chen (National Research Center of Parallel Computer Engineering and Technology, China)
Abstract: People are increasingly concerned about how tectonic processes affect climate and vice versa. We establish a cross-sphere modeling system for volcanic eruptions and atmosphere circulation on a new Sunway supercomputer with a spatial resolution from 10m locally to 3km globally, using an improved multi-medium and multiphase smoothed particle hydrodynamics (SPH) combined with a fully coupled meteorology-chemistry global atmospheric modeling scheme. We achieve 400 billion particles and 80% parallel efficiency using 39,000,000 processor cores. The simulation captures the whole dynamic process of the Tonga eruption from shock waves, earthquakes, tsunamis, mushroom clouds to the following 6-7 days of transport and diffusion of ash and water vapor, and preliminarily obtains the influence effect of full coupling of volcano, earthquake, ocean and atmosphere. This work is of great significance for deeply understanding the interaction between tectonic processes and climate change, and establishing an early warning simulation system for similar global hazard events.
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