Biomass burning aerosol size distribution and modeled optical properties

L. A. Remer, Y. J. Kaufman, B. N. Holben, Anne Mee Thompson, D. McNamara

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

Satellite remote sensing of smoke aerosol and estimates of aerosol forcing of climate require knowledge of the aerosol optical properties. A smoke aerosol physical and optical model is developed from a database of over 800 volume size distributions inverted from sky radiance data measured by the AERONET radiometer network in Brazil over a 3-year period. The model represents total column, ambient conditions during the burning season in the Amazon Basin and cerrado region of Brazil. The mean volume size distributions are bimodal and can be represented by two lognormals. Accumulation mode modal radius is 0.13 ± 0.02 μm with σ = 0.60 ± 0.04, and coarse-mode modal radius ranges from 6 to 40 μm, with a mean of 11.5 μm and σ = 1.26 ± 0.23. The volume of each mode varies with optical thickness, causing the ratio of accumulation mode and coarse mode to vary as well, but the effect on the optical properties is negligible. Refractive index is taken to be 1.43-0.0035i, and single scattering albedo is assumed to be 0.90, which is modeled with an external mixing of black carbon. The optical properties in the visible are dominated by the accumulation mode. Accumulation mode characteristics do not vary from year to year, from forest to cerrado region, with optical thickness or with precipitable water vapor. At one test location, accumulation mode characteristics do vary with air mass trajectory origin. The model is tested with independent data and can accurately predict the scattering phase function and path radiance in the backscattering direction that determines remote sensing properties and is responsible for scattering sunlight back to space.

Original languageEnglish (US)
Article number9SJD00271
Pages (from-to)31879-31891
Number of pages13
JournalJournal of Geophysical Research Atmospheres
Volume103
Issue numberD24
DOIs
StatePublished - Jan 1 1998

Fingerprint

biomass burning
optical properties
aerosols
Aerosols
optical property
Biomass
Optical properties
particle size
biomass
aerosol
Scattering
smoke
cerrado
Smoke
remote sensing
scattering
Remote sensing
burning season
radiance
albedo (reflectance)

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Remer, L. A., Kaufman, Y. J., Holben, B. N., Thompson, A. M., & McNamara, D. (1998). Biomass burning aerosol size distribution and modeled optical properties. Journal of Geophysical Research Atmospheres, 103(D24), 31879-31891. [9SJD00271]. https://doi.org/10.1029/98JD00271
Remer, L. A. ; Kaufman, Y. J. ; Holben, B. N. ; Thompson, Anne Mee ; McNamara, D. / Biomass burning aerosol size distribution and modeled optical properties. In: Journal of Geophysical Research Atmospheres. 1998 ; Vol. 103, No. D24. pp. 31879-31891.
@article{ed8e54d5353c48c397ebcabd604f7b67,
title = "Biomass burning aerosol size distribution and modeled optical properties",
abstract = "Satellite remote sensing of smoke aerosol and estimates of aerosol forcing of climate require knowledge of the aerosol optical properties. A smoke aerosol physical and optical model is developed from a database of over 800 volume size distributions inverted from sky radiance data measured by the AERONET radiometer network in Brazil over a 3-year period. The model represents total column, ambient conditions during the burning season in the Amazon Basin and cerrado region of Brazil. The mean volume size distributions are bimodal and can be represented by two lognormals. Accumulation mode modal radius is 0.13 ± 0.02 μm with σ = 0.60 ± 0.04, and coarse-mode modal radius ranges from 6 to 40 μm, with a mean of 11.5 μm and σ = 1.26 ± 0.23. The volume of each mode varies with optical thickness, causing the ratio of accumulation mode and coarse mode to vary as well, but the effect on the optical properties is negligible. Refractive index is taken to be 1.43-0.0035i, and single scattering albedo is assumed to be 0.90, which is modeled with an external mixing of black carbon. The optical properties in the visible are dominated by the accumulation mode. Accumulation mode characteristics do not vary from year to year, from forest to cerrado region, with optical thickness or with precipitable water vapor. At one test location, accumulation mode characteristics do vary with air mass trajectory origin. The model is tested with independent data and can accurately predict the scattering phase function and path radiance in the backscattering direction that determines remote sensing properties and is responsible for scattering sunlight back to space.",
author = "Remer, {L. A.} and Kaufman, {Y. J.} and Holben, {B. N.} and Thompson, {Anne Mee} and D. McNamara",
year = "1998",
month = "1",
day = "1",
doi = "10.1029/98JD00271",
language = "English (US)",
volume = "103",
pages = "31879--31891",
journal = "Journal of Geophysical Research: Atmospheres",
issn = "2169-897X",
number = "D24",

}

Remer, LA, Kaufman, YJ, Holben, BN, Thompson, AM & McNamara, D 1998, 'Biomass burning aerosol size distribution and modeled optical properties', Journal of Geophysical Research Atmospheres, vol. 103, no. D24, 9SJD00271, pp. 31879-31891. https://doi.org/10.1029/98JD00271

Biomass burning aerosol size distribution and modeled optical properties. / Remer, L. A.; Kaufman, Y. J.; Holben, B. N.; Thompson, Anne Mee; McNamara, D.

In: Journal of Geophysical Research Atmospheres, Vol. 103, No. D24, 9SJD00271, 01.01.1998, p. 31879-31891.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Biomass burning aerosol size distribution and modeled optical properties

AU - Remer, L. A.

AU - Kaufman, Y. J.

AU - Holben, B. N.

AU - Thompson, Anne Mee

AU - McNamara, D.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Satellite remote sensing of smoke aerosol and estimates of aerosol forcing of climate require knowledge of the aerosol optical properties. A smoke aerosol physical and optical model is developed from a database of over 800 volume size distributions inverted from sky radiance data measured by the AERONET radiometer network in Brazil over a 3-year period. The model represents total column, ambient conditions during the burning season in the Amazon Basin and cerrado region of Brazil. The mean volume size distributions are bimodal and can be represented by two lognormals. Accumulation mode modal radius is 0.13 ± 0.02 μm with σ = 0.60 ± 0.04, and coarse-mode modal radius ranges from 6 to 40 μm, with a mean of 11.5 μm and σ = 1.26 ± 0.23. The volume of each mode varies with optical thickness, causing the ratio of accumulation mode and coarse mode to vary as well, but the effect on the optical properties is negligible. Refractive index is taken to be 1.43-0.0035i, and single scattering albedo is assumed to be 0.90, which is modeled with an external mixing of black carbon. The optical properties in the visible are dominated by the accumulation mode. Accumulation mode characteristics do not vary from year to year, from forest to cerrado region, with optical thickness or with precipitable water vapor. At one test location, accumulation mode characteristics do vary with air mass trajectory origin. The model is tested with independent data and can accurately predict the scattering phase function and path radiance in the backscattering direction that determines remote sensing properties and is responsible for scattering sunlight back to space.

AB - Satellite remote sensing of smoke aerosol and estimates of aerosol forcing of climate require knowledge of the aerosol optical properties. A smoke aerosol physical and optical model is developed from a database of over 800 volume size distributions inverted from sky radiance data measured by the AERONET radiometer network in Brazil over a 3-year period. The model represents total column, ambient conditions during the burning season in the Amazon Basin and cerrado region of Brazil. The mean volume size distributions are bimodal and can be represented by two lognormals. Accumulation mode modal radius is 0.13 ± 0.02 μm with σ = 0.60 ± 0.04, and coarse-mode modal radius ranges from 6 to 40 μm, with a mean of 11.5 μm and σ = 1.26 ± 0.23. The volume of each mode varies with optical thickness, causing the ratio of accumulation mode and coarse mode to vary as well, but the effect on the optical properties is negligible. Refractive index is taken to be 1.43-0.0035i, and single scattering albedo is assumed to be 0.90, which is modeled with an external mixing of black carbon. The optical properties in the visible are dominated by the accumulation mode. Accumulation mode characteristics do not vary from year to year, from forest to cerrado region, with optical thickness or with precipitable water vapor. At one test location, accumulation mode characteristics do vary with air mass trajectory origin. The model is tested with independent data and can accurately predict the scattering phase function and path radiance in the backscattering direction that determines remote sensing properties and is responsible for scattering sunlight back to space.

UR - http://www.scopus.com/inward/record.url?scp=0032573742&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032573742&partnerID=8YFLogxK

U2 - 10.1029/98JD00271

DO - 10.1029/98JD00271

M3 - Article

VL - 103

SP - 31879

EP - 31891

JO - Journal of Geophysical Research: Atmospheres

JF - Journal of Geophysical Research: Atmospheres

SN - 2169-897X

IS - D24

M1 - 9SJD00271

ER -

Remer LA, Kaufman YJ, Holben BN, Thompson AM, McNamara D. Biomass burning aerosol size distribution and modeled optical properties. Journal of Geophysical Research Atmospheres. 1998 Jan 1;103(D24):31879-31891. 9SJD00271. https://doi.org/10.1029/98JD00271