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research article

Hygroscopic properties of atmospheric particles emitted during wintertime biomass burning episodes in Athens

Psichoudaki, M.
•
Nenes, Athanasios  
•
Florou, K.
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2018
Atmospheric Environment

This study explores the Cloud Condensation Nuclei (CCN) activity of atmospheric particles during intense biomass burning periods in an urban environment. During a one-month campaign in the center of Athens, Greece, a CCN counter coupled with a Scanning Mobility Particle Sizer (SMPS) and a high resolution Aerosol Mass Spectrometer (HR-AMS) were used to measure the size-resolved CCN activity and composition of the atmospheric aerosols. During the day, the organic fraction of the particles was more than 50%, reaching almost 80% at night, when the fireplaces were used. Positive Matrix Factorization (PMF) analysis revealed 4 factors with biomass burning being the dominant source after 18:00 until the early morning. The CCN-based overall hygroscopicity parameter κ ranged from 0.15 to 0.25. During the night, when the biomass burning organic aerosol (bbOA) dominated, the hygroscopicity parameter for the mixed organic/inorganic particles was on average 0.16. The hygroscopicity of the biomass-burning organic particles was 0.09, while the corresponding average value for all organic particulate matter during the campaign was 0.12. © 2018 Elsevier Ltd

  • Details
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Type
research article
DOI
10.1016/j.atmosenv.2018.01.004
Author(s)
Psichoudaki, M.
Nenes, Athanasios  
Florou, K.
Kaltsonoudis, C.
Pandis, S. N.
Date Issued

2018

Publisher

Elsevier Ltd

Published in
Atmospheric Environment
Volume

178

Start page

66

End page

72

Subjects

CCN

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Fireplace emissions

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Organic aerosol

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Urban air quality

•

Aerosols

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Air quality

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Atmospheric aerosols

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Biomass

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Chimneys

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Factorization

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Shape memory effect

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Silicon compounds

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Aerosol mass spectrometers

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Cloud condensation nuclei

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Hygroscopic properties

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Organic aerosol

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Organic particulate matters

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Positive Matrix Factorization

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Scanning mobility particle sizer

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Urban air quality

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Particles (particulate matter)

•

aerosol

•

air quality

•

Article

•

atmosphere

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biomass

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chemical composition

•

fire

•

particle size

•

particulate matter

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priority journal

•

surface property

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urban area

•

wettability

•

winter

•

wood

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LAPI  
Available on Infoscience
October 15, 2018
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/148854
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