Detail publikace

Impact of wind-induced resuspension on urban air quality: a CFD study with air quality data comparison

LINDA, J. HASEČIČ, A. POSPÍŠIL, J. KUDELA, L. BRZEZINA, J.

Originální název

Impact of wind-induced resuspension on urban air quality: a CFD study with air quality data comparison

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Wind-induced particulate matter (PM) resuspension is an increasingly recognized contributor to urban air pollution. A CFD model of 2D street canyon geometry was developed that can replicate the process of resuspension. Model created the wind speed vs concentration increase due to resuspension relationship and its key properties: threshold wind speed causing resuspension (TWSR) and concentration increase. At least 8.75 m/s in 10 m height inlet wind speed before street canyons was needed to start the resuspension, leading to PM10 concentrations often exceeding 1 mu g/m(3), with peak values reaching as high as 3 mu g/m(3). The model can predict the behavior of resuspension well, but it cannot capture all the factors acting in the real environment to match precisely the air quality data. Silt load remains the greatest unknown factor in determining the overall magnitude of resuspension, with observed increases in PM10 concentrations up to 6 mu g/m(3) in air quality data.

Klíčová slova

Resuspension; CFD; model; PM; particles; validation

Autoři

LINDA, J.; HASEČIČ, A.; POSPÍŠIL, J.; KUDELA, L.; BRZEZINA, J.

Vydáno

25. 2. 2025

Nakladatel

NATURE PORTFOLIO

Místo

BERLIN

ISSN

2397-3722

Periodikum

npj Climate and Atmospheric Science

Ročník

8

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

14

Strany počet

14

URL

http://nature.com/articles/s41612-025-00969-2

Plný text v Digitální knihovně

http://hdl.handle.net/11012/250773

BibTex

@article{BUT197378,
  author="Jakub {Linda} and Amra {Hasečič} and Jiří {Pospíšil} and Libor {Kudela} and Jáchym {Brzezina}",
  title="Impact of wind-induced resuspension on urban air quality: a CFD study with air quality data comparison",
  journal="npj Climate and Atmospheric Science",
  year="2025",
  volume="8",
  number="1",
  pages="14",
  doi="10.1038/s41612-025-00969-2",
  issn="2397-3722",
  url="http://nature.com/articles/s41612-025-00969-2"
}