Supporting urban planning with the LES model PALM (a case study for Prague, Czech Republic)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985807%3A_____%2F23%3A00576328" target="_blank" >RIV/67985807:_____/23:00576328 - isvavai.cz</a>

Result on the web

<a href="https://virtual.oxfordabstracts.com/#/event/3742/submission/349" target="_blank" >https://virtual.oxfordabstracts.com/#/event/3742/submission/349</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Supporting urban planning with the LES model PALM (a case study for Prague, Czech Republic)

Original language description

ZÁKLADNÍ ÚDAJE: 11th International Conference on Urban Climate. Titles. Sydney: ICUC, 2023, č. článku 349. [ICUC 2023: International Conference on Urban Climate /11./. 28.08.2023-01.09.2023, Sydney]. ABSTRAKT: Large-eddy simulation (LES) models have been shown to provide good quality high-resolution information for applications in urban planning, namely when considering possible measures countering urban heat island and air pollution. In this study, we present results of simulations with the LES model PALM for Prague, Czech Republic, performed in the framework of the TURBAN project. In cooperation with the city authorities, several scenarios were designed covering various aspects of the city-specific meteorology and biometeorology. In the first set of scenarios, simple modifications were applied to various surfaces such as buildings and roads. Results of these mainly show the importance of using truly local information when setting internal model parameters. Second, a set of urbanistic scenarios was designed to assess the limits of effects of commonly considered urban-heat-island mitigation measures such as greening of the streets or altering surface materials. The third set analyses the potential impacts of currently planned changes in one of the traffic-heaviest parts of the Prague transport infrastructure. These scenarios cover the proposed completion of the currently non-existent connection of the northern and eastern parts of the city inner and outer ring roads in various variants. The use of an integrated modelling system allowed the analysis of the effects both on biothermal indicators and air quality. When studying possible urban heat island countermeasures, urban greenery is confirmed to be the most effective, especially when considering both physical and biophysical temperature indicators. On the other hand, analysis of air quality, specifically with respect to PM2.5 dispersion, confirmed opposite behaviour to that of thermal indicators, i.e. improved thermal comfort brings deterioration of PM2.5 concentrations.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

<a href="/en/project/TO01000219" target="_blank" >TO01000219: Turbulent-resolving urban modeling of air quality and thermal comfort</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů