Aerosol single scattering albedo dependence on biomass combustion efficiency: Laboratory and field studies

Shang Liu; Allison C. Aiken; Caleb Arata; Manvendra K. Dubey; Chelsea E. Stockwell; Robert J. Yokelson; Elizabeth A. Stone; Thilina Jayarathne; Allen L. Robinson; Paul J. Demott; Sonia M. Kreidenweis

doi:10.1002/2013GL058392

Aerosol single scattering albedo dependence on biomass combustion efficiency: Laboratory and field studies

Shang Liu, Allison C. Aiken, Caleb Arata, Manvendra K. Dubey, Chelsea E. Stockwell, Robert J. Yokelson, Elizabeth A. Stone, Thilina Jayarathne, Allen L. Robinson, Paul J. Demott, Sonia M. Kreidenweis

Chemistry

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84 Scopus citations

Abstract

Single scattering albedo (ω) of fresh biomass burning (BB) aerosols produced from 92 controlled laboratory combustion experiments of 20 different woods and grasses was analyzed to determine the factors that control the variability in ω. Results show that ω varies strongly with fire-integrated modified combustion efficiency (MCE_FI) - higher MCE_FI results in lower ω values and greater spectral dependence of ω. A parameterization of ω as a function of MCE_FI for fresh BB aerosols is derived from the laboratory data and is evaluated by field observations from two wildfires. The parameterization suggests that MCE _FI explains 60% of the variability in ω, while the 40% unexplained variability could be accounted for by other parameters such as fuel type. Our parameterization provides a promising framework that requires further validation and is amenable for refinements to predict ω with greater confidence, which is critical for estimating the radiative forcing of BB aerosols.

Original language	English
Pages (from-to)	742-748
Number of pages	7
Journal	Geophysical Research Letters
Volume	41
Issue number	2
DOIs	https://doi.org/10.1002/2013GL058392
State	Published - Jan 28 2014

Keywords

FLAME
biomass burning
brown carbon
combustion efficiency
single scattering albedo
wavelength dependence

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10.1002/2013GL058392

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@article{19a71ec4fa2243e38afd624d9f2ea223,

title = "Aerosol single scattering albedo dependence on biomass combustion efficiency: Laboratory and field studies",

abstract = "Single scattering albedo (ω) of fresh biomass burning (BB) aerosols produced from 92 controlled laboratory combustion experiments of 20 different woods and grasses was analyzed to determine the factors that control the variability in ω. Results show that ω varies strongly with fire-integrated modified combustion efficiency (MCEFI) - higher MCEFI results in lower ω values and greater spectral dependence of ω. A parameterization of ω as a function of MCEFI for fresh BB aerosols is derived from the laboratory data and is evaluated by field observations from two wildfires. The parameterization suggests that MCE FI explains 60% of the variability in ω, while the 40% unexplained variability could be accounted for by other parameters such as fuel type. Our parameterization provides a promising framework that requires further validation and is amenable for refinements to predict ω with greater confidence, which is critical for estimating the radiative forcing of BB aerosols.",

keywords = "FLAME, biomass burning, brown carbon, combustion efficiency, single scattering albedo, wavelength dependence",

author = "Shang Liu and Aiken, {Allison C.} and Caleb Arata and Dubey, {Manvendra K.} and Stockwell, {Chelsea E.} and Yokelson, {Robert J.} and Stone, {Elizabeth A.} and Thilina Jayarathne and Robinson, {Allen L.} and Demott, {Paul J.} and Kreidenweis, {Sonia M.}",

year = "2014",

month = jan,

day = "28",

doi = "10.1002/2013GL058392",

language = "English",

volume = "41",

pages = "742--748",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "John Wiley and Sons Inc.",

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}

TY - JOUR

T1 - Aerosol single scattering albedo dependence on biomass combustion efficiency

T2 - Laboratory and field studies

AU - Liu, Shang

AU - Aiken, Allison C.

AU - Arata, Caleb

AU - Dubey, Manvendra K.

AU - Stockwell, Chelsea E.

AU - Yokelson, Robert J.

AU - Stone, Elizabeth A.

AU - Jayarathne, Thilina

AU - Robinson, Allen L.

AU - Demott, Paul J.

AU - Kreidenweis, Sonia M.

PY - 2014/1/28

Y1 - 2014/1/28

N2 - Single scattering albedo (ω) of fresh biomass burning (BB) aerosols produced from 92 controlled laboratory combustion experiments of 20 different woods and grasses was analyzed to determine the factors that control the variability in ω. Results show that ω varies strongly with fire-integrated modified combustion efficiency (MCEFI) - higher MCEFI results in lower ω values and greater spectral dependence of ω. A parameterization of ω as a function of MCEFI for fresh BB aerosols is derived from the laboratory data and is evaluated by field observations from two wildfires. The parameterization suggests that MCE FI explains 60% of the variability in ω, while the 40% unexplained variability could be accounted for by other parameters such as fuel type. Our parameterization provides a promising framework that requires further validation and is amenable for refinements to predict ω with greater confidence, which is critical for estimating the radiative forcing of BB aerosols.

AB - Single scattering albedo (ω) of fresh biomass burning (BB) aerosols produced from 92 controlled laboratory combustion experiments of 20 different woods and grasses was analyzed to determine the factors that control the variability in ω. Results show that ω varies strongly with fire-integrated modified combustion efficiency (MCEFI) - higher MCEFI results in lower ω values and greater spectral dependence of ω. A parameterization of ω as a function of MCEFI for fresh BB aerosols is derived from the laboratory data and is evaluated by field observations from two wildfires. The parameterization suggests that MCE FI explains 60% of the variability in ω, while the 40% unexplained variability could be accounted for by other parameters such as fuel type. Our parameterization provides a promising framework that requires further validation and is amenable for refinements to predict ω with greater confidence, which is critical for estimating the radiative forcing of BB aerosols.

KW - FLAME

KW - biomass burning

KW - brown carbon

KW - combustion efficiency

KW - single scattering albedo

KW - wavelength dependence

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U2 - 10.1002/2013GL058392

DO - 10.1002/2013GL058392

M3 - Article

AN - SCOPUS:84892633122

SN - 0094-8276

VL - 41

SP - 742

EP - 748

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 2

ER -

Aerosol single scattering albedo dependence on biomass combustion efficiency: Laboratory and field studies

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