OpenCLIM - Urban Flood Impacts : 1km gridded outputs for five GB cities

This dataset contains output datasets from the OpenCLIM_UrbanFlood Workflow. These runs were part of the NERC funded OpenCLIM (Open CLimate IMpacts modelling framework) project. This data can be used for the continued analysis of climate impacts and for comparison with future studies.

The data has been generated using the OpenCLIM_UrbanFlood workflow available on DAFNI (https://www.dafni.ac.uk/) and focuses on the cities of Newcastle, Norwich, Bath, Inverness and Swansea. The workflow was run for five cities across GB to analyse changes in flood risk for a large range of urban and climate futures. The workflow uses output datasets from the Urban Development Model (described below) to generate future urban landscapes.

A second model transformed the population density data into new urban form maps including building footprints. Passed through the 2-D hydrodynamic model CityCAT, a range of future storm events with varying intensities were modelled to capture changes in flow and water depths across the domain. Damages incurred as a result of flood waters were calculated and aggregated to the 1km grid level along with the number of commercial and residential buildings affected. The code for each model in the workflow is available within the OpenCLIM GitHub repository (linked in Related Documents).

The Urban Development Model (Newcastle University) presents plausible realisations of future urban change. These are initiated from the 2017 Ordnance Survey urban-rural land use ('UDMbaseline') and projected into the future using attractors and constraints based on the UK's Shared Socio-ecconomic Pathways (SSPs).