Flood impact assessment in mega cities under urban sprawl and climate change (2015-2017)

CWS is leading an international research consortium, including colleagues from University of Exeter, UK, University of Central Florida (UCF), US, and Tsinghua University (THU), China, to develop the advanced methodology in the project Flood impact assessment in mega cities under urban sprawl and climate change funded by the Global Innovation Initiative (GII), which aims to support multilateral research collaboration to address global challenges.

Prof Dragan Savic at CWS is the coordinator of the consortium, supported by Prof Ni-Bin Chang at UCF and Prof Binliang Lin at THU. The project aims to investigate the future flood impact as the consequence of the combination of urban development and climate change in three mega cities - London, New York and Beijing. Two of them are coastal cities facing threats from both heavier precipitation and sea level rise.

An urban growth model will be developed using the satellite sensor data and the artificial intelligence techniques to detect the changing trends of urban sprawl and to project future urban growth scenarios in these three cities. The parameters derived from the urban growth model will be used in hydraulic modelling to assess the flood impact for the whole city in the 2050s.

The state-of-the-art hydraulic models will be set up to simulate flooding in complex urban environment with high spatial resolution. The multi-disciplinary collaboration will bring the experts from the UK, the US and China together to create an operational framework for analysing flood impact associated with various urban development conditions and climate change scenarios at the mega-city scale. The results can inform urban planners about the potential increase of flood risk such that better urban development strategies can be developed and implemented to mitigate flood impact.

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