Characterization of Equivalent Black Carbon at a regional background site in Central Europe: Variability and source apportionment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F20%3A00524488" target="_blank" >RIV/67985858:_____/20:00524488 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/86652079:_____/20:00524488 RIV/00216224:14310/20:00116107 RIV/00216208:11310/20:10414078

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0269749119328477?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0269749119328477?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envpol.2019.113771" target="_blank" >10.1016/j.envpol.2019.113771</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of Equivalent Black Carbon at a regional background site in Central Europe: Variability and source apportionment

Popis výsledku v původním jazyce

Characterizing Black Carbon (BC) at regional background areas is important for better understanding its impact on climate forcing and health effects. The variability and sources of Equivalent Black Carbon (EBC) in PM10 (atmospheric particles with aerodynamic diameter smaller than 10 mu m) have been investigated during a 5-year measurement period at the National Atmospheric Observatory KoSetice (NAOK), Czech Republic. Ground based measurements were performed from September 2012 to December 2017 with a 7-wavelength aethalometer (AE31, Magee Scientific). The contributions of fossil fuel (EBCff) and biomass burning (EBCbb) were estimated using the aethalometer model. Seasonal, diurnal and weekly variations of EBC were observed that can be related to the sources fluctuations and transport characteristic of pollutants predominantly associated with regional air masses recirculating over the Czech Republic and neighboring countries. The absorption Angstrom exponent (alpha-value) estimated in summer (1.1 +/- 0.2) was consistent with reported value for traffic, while the mean highest value (1.5 +/- 0.2) was observed in winter due to increased EBCbb accounting for about 50% of the total EBC. This result is in agreement with the strong correlation between EBCbb and biomass burning tracers (levoglucosan and mannosan) in winter. During this season, the concentrations of EBCbb and Delta-C (proxy for biomass burning) reached a maximum in the evening when increasing emissions of wood burning in domestic heating devices (woodstoves/heating system) is expected, especially during the weekend. The diurnal profile of EBCff displays a typical morning peak during the morning traffic rush hour and shows a decreasing concentration during weekends due to lower the traffic emission. (C) 2019 Published by Elsevier Ltd.

Název v anglickém jazyce

Characterization of Equivalent Black Carbon at a regional background site in Central Europe: Variability and source apportionment

Popis výsledku anglicky

Characterizing Black Carbon (BC) at regional background areas is important for better understanding its impact on climate forcing and health effects. The variability and sources of Equivalent Black Carbon (EBC) in PM10 (atmospheric particles with aerodynamic diameter smaller than 10 mu m) have been investigated during a 5-year measurement period at the National Atmospheric Observatory KoSetice (NAOK), Czech Republic. Ground based measurements were performed from September 2012 to December 2017 with a 7-wavelength aethalometer (AE31, Magee Scientific). The contributions of fossil fuel (EBCff) and biomass burning (EBCbb) were estimated using the aethalometer model. Seasonal, diurnal and weekly variations of EBC were observed that can be related to the sources fluctuations and transport characteristic of pollutants predominantly associated with regional air masses recirculating over the Czech Republic and neighboring countries. The absorption Angstrom exponent (alpha-value) estimated in summer (1.1 +/- 0.2) was consistent with reported value for traffic, while the mean highest value (1.5 +/- 0.2) was observed in winter due to increased EBCbb accounting for about 50% of the total EBC. This result is in agreement with the strong correlation between EBCbb and biomass burning tracers (levoglucosan and mannosan) in winter. During this season, the concentrations of EBCbb and Delta-C (proxy for biomass burning) reached a maximum in the evening when increasing emissions of wood burning in domestic heating devices (woodstoves/heating system) is expected, especially during the weekend. The diurnal profile of EBCff displays a typical morning peak during the morning traffic rush hour and shows a decreasing concentration during weekends due to lower the traffic emission. (C) 2019 Published by Elsevier Ltd.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Environmental Pollution

ISSN

0269-7491

e-ISSN

—

Svazek periodika

260

Číslo periodika v rámci svazku

MAY 2020

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

113771

Kód UT WoS článku

000528537600054

EID výsledku v databázi Scopus

2-s2.0-85078191549