Levoglucosan levels at background sites in Europe for assessing the impact of biomass combustion on the European aerosol background

Hans Puxbaum, Alexandre Caseiro, Asunción Sánchez-Ochoa, Anne Kasper-Giebl, Magda Claeys, A. Gelencsér, Michel Legrand, Susanne Preunkert, Casimiro A. Pio

Research output: Contribution to journalArticle

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Abstract

Atmospheric levoglucosan has been determined as a proxy for "biomass smoke" in samples from six background stations on a west-east transect extending from the Atlantic (Azores) to the mid-European background site KPZ (K-Puszta, Hungary). Concentration levels of levoglucosan (biannual averages) in the west-east transect range from 0.005 μg/m3 at the oceanic background site AZO (Azores) to 0.52 μg/m3 at AVE (Aveiro, Portugal). The atmospheric concentration of "biomass smoke" (biannual averages) was derived from the levoglucosan data with wood-type-specific conversion factors. Annual averages of wood smoke levels ranged from 0.05 μg/m3 at AZO to 4.3 μg/m3 at AVE. Winter (DJF) averages at the low-level sites AVE and KPZ were 10.8 and 6.7 μg/m3, respectively. Relative contributions of biomass smoke to organic matter (OM) range from around 9-11 % at the elevated sites SIL, PDD and SBO, as well as for AZO, to 36% at the low-level site AVE and 28% at KPZ. Surprisingly high relative concentrations of biomass smoke in OM (68 and 47%) were observed for wintry conditions at the continental low-level CARBOSOL sites AVE and KPZ. Thus biomass smoke is a very important constituent of the organic material in the mid and west European background with summer contributions to organic matter of around 1-6% and winter levels of around 20% at the elevated mountain sites and 47-68% at rural flat terrain sites, not including secondary organic aerosol from biomass combustion sources.

Original languageEnglish
Article numberD23S05
JournalJournal of Geophysical Research: Space Physics
Volume112
Issue number23
DOIs
Publication statusPublished - Dec 16 2007

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smoke
biomass
aerosols
Aerosols
combustion
Smoke
Azores
Hungary
Biomass
aerosol
Biological materials
organic matter
winter
Wood
transect
Portugal
organic materials
mountains
summer
Europe

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Atmospheric Science
  • Astronomy and Astrophysics
  • Oceanography

Cite this

Levoglucosan levels at background sites in Europe for assessing the impact of biomass combustion on the European aerosol background. / Puxbaum, Hans; Caseiro, Alexandre; Sánchez-Ochoa, Asunción; Kasper-Giebl, Anne; Claeys, Magda; Gelencsér, A.; Legrand, Michel; Preunkert, Susanne; Pio, Casimiro A.

In: Journal of Geophysical Research: Space Physics, Vol. 112, No. 23, D23S05, 16.12.2007.

Research output: Contribution to journalArticle

Puxbaum, Hans ; Caseiro, Alexandre ; Sánchez-Ochoa, Asunción ; Kasper-Giebl, Anne ; Claeys, Magda ; Gelencsér, A. ; Legrand, Michel ; Preunkert, Susanne ; Pio, Casimiro A. / Levoglucosan levels at background sites in Europe for assessing the impact of biomass combustion on the European aerosol background. In: Journal of Geophysical Research: Space Physics. 2007 ; Vol. 112, No. 23.
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abstract = "Atmospheric levoglucosan has been determined as a proxy for {"}biomass smoke{"} in samples from six background stations on a west-east transect extending from the Atlantic (Azores) to the mid-European background site KPZ (K-Puszta, Hungary). Concentration levels of levoglucosan (biannual averages) in the west-east transect range from 0.005 μg/m3 at the oceanic background site AZO (Azores) to 0.52 μg/m3 at AVE (Aveiro, Portugal). The atmospheric concentration of {"}biomass smoke{"} (biannual averages) was derived from the levoglucosan data with wood-type-specific conversion factors. Annual averages of wood smoke levels ranged from 0.05 μg/m3 at AZO to 4.3 μg/m3 at AVE. Winter (DJF) averages at the low-level sites AVE and KPZ were 10.8 and 6.7 μg/m3, respectively. Relative contributions of biomass smoke to organic matter (OM) range from around 9-11 {\%} at the elevated sites SIL, PDD and SBO, as well as for AZO, to 36{\%} at the low-level site AVE and 28{\%} at KPZ. Surprisingly high relative concentrations of biomass smoke in OM (68 and 47{\%}) were observed for wintry conditions at the continental low-level CARBOSOL sites AVE and KPZ. Thus biomass smoke is a very important constituent of the organic material in the mid and west European background with summer contributions to organic matter of around 1-6{\%} and winter levels of around 20{\%} at the elevated mountain sites and 47-68{\%} at rural flat terrain sites, not including secondary organic aerosol from biomass combustion sources.",
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AU - Claeys, Magda

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