RAMSES city module - city page for London

View results of the RAMSES project for 200 European cities. | about this study

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Flooding and transport

Figure 1 shows the estimated loss in million Euros due to heat related transport disruption for a set of 16 scenarios, ranked by order of magnitude (scenarios A-P, from least to most severe).

General description:

We develop an economic cost methodology to assess the impact of specific climate change hazards through different channels of urban productive activity. We use the methodology to examine the impact of pluvial flooding on transport disruptions leading to production losses across sectors of the city economy.

We define labour in terms of total quantity supplied per sector, where transport disruptions imply a decrease in time spent working. We define constant elasticity of substitution (CES) production functions for each sector that specifically encompass our estimated losses in total labour due to transport disruptions. The production functions are calibrated and aggregated at the city level according to specific weights given to each sector.

WP3 uses CityCAT, along with the London road network, to predict delays resulting from a one hour 100 year flooding event. It uses two scenarios: one where the city is completely permeable and one where it is impermeable. The person-minute delays are calculated using the 2011 Census data on daily journeys.