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  1. Strong spectral variation of biomass smoke light absorption and single scattering albedo observed with a novel dual-wavelength photoacoustic instrument

    A dual-wavelength photoacoustic instrument operating at 405 and 870 nm was used during the 2006 Fire Lab at Missoula Experiment to measure light scattering and absorption by smoke from the combustion of a variety of biomass fuels. Simultaneous measurements of aerosol light scattering by reciprocal nephelometry within the instrument's acoustic resonator accompany...

    Author(s):
    Kristin Lewis; William P. Arnott; Hans Moosmuller; Cyle E. Wold
    Year:
    2008
    Keywords:
    dual-wavelength photoacoustic instrument, spectral variation, biomass smoke, scattering, absorption, Angstrom exponent
    Source:
    Journal of Geophysical Research. 113: D16203, doi:10.1029/2007JD009699.

  2. Brown carbon in tar balls from smoldering biomass combustion

    We report the direct observation of laboratory production of spherical, carbonaceous particles - "tar balls" - from smoldering combustion of two commonly occurring dry mid-latitude fuels. Real-time measurements of spectrally varying absorption Angstrom coefficients (AAC) indicate that a class of light absorbing organic carbon (OC) with wavelength dependent...

    Author(s):
    R. K. Chakrabarty; H. Moosmuller; L.-W. A. Chen; K. Lewis; W. P. Arnott; C. Mazzoleni; M. K. Dubey; C. E. Wold; W. M. Hao; S. M. Kreidenweis
    Year:
    2010
    Keywords:
    brown carbon, tar balls, UV absorption
    Source:
    Atmospheric Chemistry and Physics. 10: 6363-6370.

  3. Validation of smoke plume rise models using ground based lidar

    Biomass fires can significantly degrade regional air quality. Plume rise height is one of the critical factors determining the impact of fire emissions on air quality. Plume rise models are used to prescribe the vertical distribution of fire emissions which are critical input for smoke dispersion and air quality models. The poor state of model evaluation is due in...

    Author(s):
    Cyle E. Wold; Shawn Urbanski; Vladimir Kovalev; Alexander Petkov; Wei Min Hao
    Year:
    2010
    Keywords:
    smoke plume rise models, ground based lidar, biomass fires
    Source:
    In: Wade, Dale D.; Robinson, Mikel L., eds. Proceedings of 3rd Fire Behavior and Fuels Conference; 25-29 October 2010; Spokane, WA. Birmingham, AL: International Association of Wildland Fire. 11 p.
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