Fossil and non-fossil source contributions to atmospheric carbonaceous aerosols during extreme spring grassland fires in Eastern Europe
Item
Title (Dublin Core)
Fossil and non-fossil source contributions to atmospheric carbonaceous aerosols during extreme spring grassland fires in Eastern Europe
Description (Dublin Core)
In early spring the Baltic region is frequently affected by high-pollution events due to biomass burning in that area. Here we present a comprehensive study to investigate the impact of biomass/grass burning (BB) on the evolution and composition of aerosol in Preila, Lithuania, during springtime open fires. Non-refractory submicron particulate matter (NR-PM<sub>1</sub>) was measured by an Aerodyne aerosol chemical speciation monitor (ACSM) and a source apportionment with the multilinear engine (ME-2) running the positive matrix factorization (PMF) model was applied to the organic aerosol fraction to investigate the impact of biomass/grass burning. Satellite observations over regions of biomass burning activity supported the results and identification of air mass transport to the area of investigation. Sharp increases in biomass burning tracers, such as levoglucosan up to 683 ng m<sup>−3</sup> and black carbon (BC) up to 17 µg m<sup>−3</sup> were observed during this period. A further separation between fossil and non-fossil primary and secondary contributions was obtained by coupling ACSM PMF results and radiocarbon (<sup>14</sup>C) measurements of the elemental (EC) and organic (OC) carbon fractions. Non-fossil organic carbon (OC<sub>nf</sub>) was the dominant fraction of PM<sub>1</sub>, with the primary (POC<sub>nf</sub>) and secondary (SOC<sub>nf</sub>) fractions contributing 26–44 % and 13–23 % to the total carbon (TC), respectively. 5–8 % of the TC had a primary fossil origin (POC<sub>f</sub>), whereas the contribution of fossil secondary organic carbon (SOC<sub>f</sub>) was 4–13 %. Non-fossil EC (EC<sub>nf</sub>) and fossil EC (EC<sub>f</sub>) ranged from 13–24 and 7–13 %, respectively. Isotope ratios of stable carbon and nitrogen isotopes were used to distinguish aerosol particles associated with solid and liquid fossil fuel burning.
Creator (Dublin Core)
Ulevicius, Vidmantas
Byčenkienė, Steigvilė
Bozzetti, Carlo
Vlachou, Athanasia
Plauškaitė, Kristina
Mordas, Genrik
Dudoitis, Vadimas
Abbaszade, Gülcin
Remeikis, Vidmantas
Garbaras, Andrius
Masalaite, Agne
Blees, Jan
Fröhlich, Roman
Dällenbach, Kaspar R.
Canonaco, Francesco
Slowik, Jay G.
Dommen, Josef
Zimmermann, Ralf
Schnelle-Kreis, Jürgen
Salazar, Gary A.
Agrios, Konstantinos
Szidat, Sönke
Haddad, Imad
Prévôt, André S. H.
Date (Dublin Core)
2018-09-08
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-16-5513-2016
https://acp.copernicus.org/articles/16/5513/2016/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
