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About Project Ramses
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The RAMSES Project
This work was part of the RAMSES project, work-package 3.1, where an evaluation of the risk of future changes in heat-waves, droughts and floods in all European cities was performed. The approach took advantage of increased availability of European and global datasets and computing power to apply the method to the 571 cities in the EU’s Urban Audit database. This high-level analysis enables prioritisation of national and EU-wide adaptation investments. However, the very nature of a high-level approach makes it inappropriate for local risk assessments, or emergency planning. Ongoing work in RAMSES work-package 3 is developing tools to support detailed risk analysis for these purposes.
The hydrodynamic model CityCat has been used to model surface water flow for a range of different storm events (16 storm events from 20mm/hr up to 250mm/hr) across 571 European cities. CityCat is a detailed hydrodynamic model based on the shallow water equations and the solution is obtained using the method of finite-volumes with shock-capturing schemes. The model is computationally efficient and can run on multiple cores.
The simulations are computationally very intensive so it is necessary to use hundreds of servers at the same time. For this reason all the simulations were performed on the Microsoft Azure Cloud using a parameter sweep platform.
We would like to thank Microsoft for providing us support and free access to the Microsoft Azure Cloud under the Windows Azure for Research Award program.
For more information about the Ramses project please contact: Richard Dawson