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High Resolution Air Quality Forecasting Over Prague within the URBI PRAGENSI Project: Model Performance During the Winter Period and the Effect of Urban Parameterization on PM
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SYSNO ASEP 0525251 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title High Resolution Air Quality Forecasting Over Prague within the URBI PRAGENSI Project: Model Performance During the Winter Period and the Effect of Urban Parameterization on PM Author(s) Ďoubalová, J. (CZ)
Huszár, P. (CZ)
Eben, Kryštof (UIVT-O) SAI, RID, ORCID
Benešová, N. (CZ)
Belda, M. (CZ)
Vlček, O. (CZ)
Karlický, J. (CZ)
Geletič, Jan (UIVT-O) RID, ORCID, SAI
Halenka, T. (CZ)Article number 625 Source Title Atmosphere. - : MDPI - ISSN 2073-4433
Roč. 11, č. 6 (2020)Number of pages 23 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords air pollution ; emissions ; urban canopy ; weather prediction ; particulate matter ; validation Subject RIV DG - Athmosphere Sciences, Meteorology OECD category Meteorology and atmospheric sciences R&D Projects UH0383 GA KHP - The Capital City of Prague (KHP) Method of publishing Open access Institutional support UIVT-O - RVO:67985807 UT WOS 000553566800001 EID SCOPUS 85087104366 DOI https://doi.org/10.3390/atmos11060625 Annotation The overall impact of urban environments on the atmosphere is the result of many different nonlinear processes, and their reproduction requires complex modeling approaches. The parameterization of these processes in the models can have large impacts on the model outputs. In this study, the evaluation of a WRF/Comprehensive Air Quality Model with Extensions (CAMx) forecast modeling system set up for Prague, the Czech Republic, within the project URBI PRAGENSI is presented. To assess the impacts of urban parameterization in WRF, in this case with the BEP+BEM (Building Environment Parameterization linked to Building Energy Model) urban canopy scheme, on Particulate Matter (PM) simulations, a simulation was performed for a winter pollution episode and compared to a non-urbanized run with BULK treatment. The urbanized scheme led to an average increase in temperature at 2 m by 2 ∘ C, a decrease in wind speed by 0.5 m s − 1 , a decrease in relative humidity by 5%, and an increase in planetary boundary layer height by 100 m. Based on the evaluation against observations, the overall model error was reduced. These impacts were propagated to the modeled PM concentrations, reducing them on average by 15–30 μ g m − 3 and 10–15 μ g m − 3 for PM 10 and PM 2 . 5 , respectively. In general, the urban parameterization led to a larger underestimation of the PM values, but yielded a better representation of the diurnal variations. Workplace Institute of Computer Science Contact Tereza Šírová, sirova@cs.cas.cz, Tel.: 266 053 800 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0309434
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