A Study of Summer and Winter Highly Time-resolved Submicron Aerosol Composition Measured at a Suburban Site in Prague

0446399 - ÚCHP 2016 RIV GB eng J - Journal Article
Kubelová, Lucie - Vodička, Petr - Schwarz, Jaroslav - Cusack, Michael - Makeš, Otakar - Ondráček, Jakub - Ždímal, Vladimír
A Study of Summer and Winter Highly Time-resolved Submicron Aerosol Composition Measured at a Suburban Site in Prague.
Atmospheric Environment. Roč. 118, OCT 2015 (2015), s. 45-57. ISSN 1352-2310. E-ISSN 1873-2844
R&D Projects: GA ČR GAP209/11/1342
Institutional support: RVO:67985858
Keywords : atmospheric aerosol * chemical composition * size distribution
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 3.459, year: 2015

The variability of aerosol chemical composition and the impact of the origin of respective air masses were studied in high time resolution for selected periods of high and low levels of aerosol burden at a suburban station in Prague-Suchdol, Czech Republic in summer and winter. Ambient aerosol measurements were performed using the compact-Time of Flight-Aerosol Mass Spectrometer (c-ToF-AMS) and variations in concentration of the main species are discussed. The average mass concentrations for the main species were organic matter.We found an inverse relationship between non-refractory submicron particulate matter levels and the boundary layer height, mainly in winter. Furthermore, levels of pollution were influenced by the air mass origin, where cleaner maritime air masses resulted in lower aerosol levels compared to those of continental origin. Analysis of the diurnal variation of NR-PM1 showed minimum concentrations in the afternoon caused by dilution as a result of an increase in the boundary layer height. Most maximum concentrations of the main species occurred in the morning or night except sulphate which had a midday maximum, probably due to downdraft from upper boundary layer air.
Permanent Link: http://hdl.handle.net/11104/0250262