0585768 - ÚCHP 2025 RIV TW eng J - Článek v odborném periodiku
Windell, Laurence Christian - Pokorná, Petra - Schwarz, Jaroslav - Vodička, Petr - Hopke, P.K. - Zíková, Naděžda - Lhotka, Radek - Ondráček, Jakub - Roztočil, Petr - Vojtíšek, Michal - Ždímal, Vladimír
Highly Time-Resolved Elemental Source Apportionment at a Prague Urban Traffic Site.
Aerosol and Air Quality Research. Roč. 24, č. 8 (2024), č. článku 240058. ISSN 1680-8584. E-ISSN 2071-1409
Grant CEP: GA MŠMT(CZ) LTAUSA19006
GRANT EU: European Commission(XE) 871115 - ACTRIS IMP
Institucionální podpora: RVO:67985858
Klíčová slova: PMF * online * xact * EC/OC
Obor OECD: Meteorology and atmospheric sciences
Impakt faktor: 2.5, rok: 2023 ; AIS: 0.512, rok: 2023
Způsob publikování: Open access
Web výsledku:
https://aaqr.org/articles/aaqr-24-02-oa-0058.pdf

DOI: https://doi.org/10.4209/aaqr.240058

Positive Matrix Factorization was used for source apportionment of 2-hour online metals (Xact625i, PM2.5) and elemental and organic carbon (EC/OC analyser, PM1) data at an urban traffic site in Prague, Czech Republic, for two month-long periods in spring (February – March) and winter (November – December), 2020 (400 samples). Five factors were obtained for spring: Local heating (39%), Soil/road dust (21%), Secondary inorganic aerosol (20%), Traffic (12%), and Road salt (9%), while four factors were resolved for winter: Local heating (20%), Soil/road dust (31%), Secondary inorganic aerosol (SIA, 36%), and Traffic (13%). Aside from SIA, the sources were of local origins. Air mass back trajectories calculated by HYSPLIT and concentration weighted trajectories (CWT) were used to identify long-distance sources. Greater PM concentrations during winter (~3 times greater) wereattributed to both lower boundary layer heights and more abundant air masses from Central Europe, compared to more marine air masses during spring.
Trvalý link: https://hdl.handle.net/11104/0353447