Articles | Volume 21, issue 15
Measurement report
13 Aug 2021
Measurement report |  | 13 Aug 2021

Measurement report: Effect of wind shear on PM10 concentration vertical structure in the urban boundary layer in a complex terrain

Piotr Sekuła, Anita Bokwa, Jakub Bartyzel, Bogdan Bochenek, Łukasz Chmura, Michał Gałkowski, and Mirosław Zimnoch

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Atmos. Chem. Phys. Discuss.,,, 2019
Revised manuscript not accepted
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Subject: Dynamics | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

ACCORD: A Consortium for COnvection-scale modelling Research and Development, Meteorological model ALADIN, available at:, last access: 21 April 2021. 
Benard, P., Vivoda, J., Masek, J., Smolikova, P., Yessad, K., Smith, C., Brozkova, R., and Geleyn, J. F.: Dynamical kernel of the Aladin-NH spectral limited-area model: Revised formulation and sensitivity experiments, Q. J. Roy. Meteor. Soc., 136, 155–169,, 2010. 
Bochenek, B. Sekuła, P., Jerczyński, M., Kolonko, M., Szczęch-Gajewska, M., Woyciechowska, J., and Stachura, G.: ALADIN in Poland, 30th ALADIN Wk and HIRLAM ASM 2020, Ljubljana, Slovenia,available at: (last access: 21 April 2021), 30 March–3 April 2020. 
Bokwa, A.: Miejska wyspa ciepła na tle naturalnego zróżnicowania termicznego obszaru położonego we wklęsłej formie terenu (na przykładzie Krakowa) [Urban heat island against the background of natural thermal diversity of the area located in a concave terrain (on the example of Kraków city)], Prace Geograficzne IGiGP UJ, 122, 111–132, 2009. 
Bokwa, A.: Wieloletnie zmiany struktury mezoklimatu miasta na przykładzie Krakowa [Long-term changes in the structure mesoclimate of the city on the example of Kraków city], IGiGP UJ, Kraków, 296 pp., 2010. 
Short summary
The wind shear generated on a local scale by the diversified relief’s impact can be a factor which significantly modifies the spatial pattern of PM10 concentration. The vertical profile of PM10 over a city located in a large valley during the events with high surface-level PM10 concentrations may show a sudden decrease with height not only due to the increase in wind speed, but also due to the change in wind direction alone. Vertical aerosanitary urban zones can be distinguished.
Final-revised paper