The city master plan is often an aspirational thing, reflecting the wishes of stakeholders that believe in their city and its potential. But master plans can be so much more. By creating a city-wide digital twin, we can stress-test master plans, quantifying the impacts of proposed changes to city operations, regulations, and capital improvements. The result: desperately needed information that can help a community bring detail to a nebulous climate-change impacted future. Built on Esri's ArcGIS desktop platform, Atkins has created City Simulator, a tool we use to help our municipal and county clients see the future. The tool helps a community create a building-by-building, road-by-road digital replica, which we stock with a population of avatars (agents) that match the present-day population in terms of age, educational background, transportation habits, and many more. The tool then simulates the city evolving into the future and serving the growing population, with urbanization happening across the city landscape. Climate model-forecasted storms, heat waves, drought, and sea level rise hit the city over the course of the present day to mid-century run. Where cities have proposed adaptation and mitigation measures, the direct impacts are forecasted in real world terms. Metrics like future commutes disrupted by flood, buckling rail due to high heat, and storm damage due to wind and wildfire driven floods become the current discussion and the fuel for taking action. This presentation will describe City Simulator, using an Atlanta Regional Commission metro-wide case study.
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