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Los Angeles Plume Hybrid Model

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Published on Feb 25, 2011

In the full Los Angeles model airborne toxic pollution dynamics are modeled by Computational Fluid Dynamics (CFD) and visualized in a 3D replica of LA, while an Agent-Based Modeling (ABM) depicts all traffic and pedestrian flow in response. This fear-driven agent behavior generates patterns of congestion and exposure that are used as bases for optimal policy design and emergency surge planning. This hybrid model was developed under Epstein's direction with the National Center for Computational Engineering (Univ. Tennessee) to optimize preparedness for urban disaster scenarios. The unprecedented speed and scale of this computing permits the pre-computation of literally billions of scenarios, and construction of what Epstein calls "peta-byte playbooks" allowing rapid identification of tailored responses, and real-time adaptation through data streaming, and rigorous comparisons of costs and benefits.

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