Formation and evolution of tar balls from northwestern US wildfires

Formation and evolution of tar balls from northwestern US wildfires

Biomass burning is a major source of light-absorbing black and brown carbonaceous particles. Tar balls (TBs) are a type of brown carbonaceous particle apparently unique to biomass burning. Here we describe the first atmospheric observations of the formation and evolution of TBs from forest fires. Ae...

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Veröffentlicht in:Atmospheric chemistry and physics 2018-08, Vol.18 (15), p.11289-11301
Hauptverfasser: Sedlacek III, Arthur J, Buseck, Peter R, Adachi, Kouji, Onasch, Timothy B, Springston, Stephen R, Kleinman, Lawrence
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Aerosol particles
Aerosols
Albedo
Biomass
Biomass burning
Burning
Chemical properties
Disease transmission
Electron microscopy
Emission inventories
Environmental aspects
Evolution
Fires
Forest fires
In situ measurement
Scattering
Secondary aerosols
Tar
Tar balls
Transmission electron microscopy
Wildfires
Wind
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Zusammenfassung:Biomass burning is a major source of light-absorbing black and brown carbonaceous particles. Tar balls (TBs) are a type of brown carbonaceous particle apparently unique to biomass burning. Here we describe the first atmospheric observations of the formation and evolution of TBs from forest fires. Aerosol particles were collected on transmission electron microscopy (TEM) grids during aircraft transects at various downwind distances from the Colockum Tarps wildland fire. TB mass fractions, derived from TEM and in situ measurements, increased from
ISSN:1680-7324
1680-7316
1680-7324
DOI:10.5194/acp-18-11289-2018