A study of summer and winter highly time-resolved submicron aerosol composition measured at a suburban site in Prague

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10297087" target="_blank" >RIV/00216208:11310/15:10297087 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/15:00446399

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S1352231015302296" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1352231015302296</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.atmosenv.2015.07.030" target="_blank" >10.1016/j.atmosenv.2015.07.030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A study of summer and winter highly time-resolved submicron aerosol composition measured at a suburban site in Prague

Popis výsledku v původním jazyce

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 (summer; winter): organic matter (4.2 mu g/m(3); 8.4 mu g/m(3)), SO42- (2.0 mu g/m(3); 4.4 mu g/m(3)), NH4+ (1.2 mu g/m(3); 2.8 mu g/m(3)), NO3- (0.8 mu g/m(3); 5.4 mu g/m(3)) and Cl- (0.1 mu g/m(3); 0.23 mu g/m(3)). We found an inverse relationship between non-refractory submicron particulate matter (NR-PM1) 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 and photochemical formation in the afternoon.

Název v anglickém jazyce

A study of summer and winter highly time-resolved submicron aerosol composition measured at a suburban site in Prague

Popis výsledku anglicky

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 (summer; winter): organic matter (4.2 mu g/m(3); 8.4 mu g/m(3)), SO42- (2.0 mu g/m(3); 4.4 mu g/m(3)), NH4+ (1.2 mu g/m(3); 2.8 mu g/m(3)), NO3- (0.8 mu g/m(3); 5.4 mu g/m(3)) and Cl- (0.1 mu g/m(3); 0.23 mu g/m(3)). We found an inverse relationship between non-refractory submicron particulate matter (NR-PM1) 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 and photochemical formation in the afternoon.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP209%2F11%2F1342" target="_blank" >GAP209/11/1342: Studium fyzikálně chemických vlastností atmosférických aerosolů a jejich původu s velkým časovým rozlišením</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Atmospheric Environment

ISSN

1352-2310

e-ISSN

—

Svazek periodika

2015

Číslo periodika v rámci svazku

118

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

45-57

Kód UT WoS článku

000361409900005

EID výsledku v databázi Scopus

2-s2.0-84938774999