Spatial Distribution of Carbonaceous Aerosol in the Southeastern Baltic Sea Region (Event of Grass Fires)

The aerosol chemical composition in air masses affected by large vegetation fires transported from the Kaliningrad region (Russia) and southeast regions (Belarus and Ukraine) during early spring (March 2014) was characterized at the remote background site of Preila, Lithuania. In this study, the che...

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Bibliographic Details
Published in:Acta geophysica 2016-06, Vol.64 (3), p.711-731
Main Authors: Dudoitis, Vadimas, Byčenkienė, Steigvilė, Plauškaitė, Kristina, Bozzetti, Carlo, Fröhlich, Roman, Mordas, Genrik, Ulevičius, Vidmantas
Format: Article
Language:English
Subjects:
ACSM
Aerosols
Air masses
Airborne particulates
ammonium and chloride
Atmospheric aerosols
Atmospheric chemistry
Chemical composition
Chemical speciation
Earth and Environmental Science
Earth Sciences
Fires
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
nitrate and sulphate
organic aerosol
Particulate matter
Spatial analysis
Spatial distribution
Speciation
Structural Geology
Vegetation
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Summary:The aerosol chemical composition in air masses affected by large vegetation fires transported from the Kaliningrad region (Russia) and southeast regions (Belarus and Ukraine) during early spring (March 2014) was characterized at the remote background site of Preila, Lithuania. In this study, the chemical composition of the particulate matter was studied by high temporal resolution instruments, including an Aerosol Chemical Speciation Monitor (ACSM) and a seven-wavelength aethalo-meter. Air masses were transported from twenty to several hundred kilometres, arriving at the measurement station after approximately half a day of transport. The concentration-weighted trajectory analysis suggests that organic aerosol particles are mainly transported over the Baltic Sea and the continent (southeast of Belarus). Results show that a significant fraction of the vegetation burning organic aerosol is transformed into oxidised forms in less than a half-day. Biomass burning aerosol (BBOA) was quantified from the ACSM data using a positive matrix factorization (PMF) analysis, while its spatial distribution was evaluated using air mass clustering approach.
ISSN:1895-6572
1895-7455
DOI:10.1515/acgeo-2016-0018