The connection between the "Zero Net Artificialisation 2050" objective and the "Urban Digital Twin" tool, a methodology for assessing strategies to reduce the risk of urban heat islands using data.
- Université Gustave Eiffel, Lab'Urba, génie urbain, France (fanny.normand.josse@gmail.com)
Soil artificialisation due to urban sprawl, infrastructure development and concreting is one of the causes of the loss of urban biodiversity. In addition, the rise in global temperatures as a direct consequence of climate change has become a major challenge for urban planning. The urban heat island, which is mainly the result of the waterproofing of soils to encourage surface reflection (Aldebo), contributes to global warming. The Urban Digital Twin, a design tool that can simulate, predict and monitor through the implementation of data, enables urban resilience strategies to be put in place.
This proposal aims to discuss the relationship between the "Zero Net Artificialization (ZNA) by 2050" objective (the ban on artificialization over a " defined period ") of the 2021 French "Climate and Resilience" legislation and the "Urban Digital Twin" in view of building models for planning cities that are more resilient to heat islands.
The first part of this presentation is devoted to the development of a methodology for selecting data (type of land use, topography, albedo of materials, etc.) and implementing them in numerical models in order to obtain "urban and climate Digital Twins".
The second part of this document is devoted to the methodology for evaluating the various strategic models developed in the first part of the document at different scales, from the block to the territory, but also over different temporalities in line with the ZNA objective (currently conditional on the renaturation of an equal proportion of artificialised spaces over a specific timeframe) and further research into the fight against heat islands.
By using the Urban Digital Twin to meet the ZNA objective, this proposal focuses on developing predictive models for controlling heat islands in an attempt to guide urban planning towards sustainable and resilient environments.
How to cite: Josse, F.: The connection between the "Zero Net Artificialisation 2050" objective and the "Urban Digital Twin" tool, a methodology for assessing strategies to reduce the risk of urban heat islands using data., EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-17811, https://doi.org/10.5194/egusphere-egu24-17811, 2024.
