AGING OF SAVANNA BIOMASS BURNING AEROSOLS - CONSEQUENCES ON THEIR OPTICAL-PROPERTIES

被引：86

作者：

LIOUSSE, C ^{[1
]}

DEVAUX, C ^{[1
]}

DULAC, F ^{[1
]}

CACHIER, H ^{[1
]}

机构：

[1] UNIV SCI & TECH LILLE FLANDRES ARTOIS, OPT ATMOSPHER LAB, CNRS, UA 713, F-59655 VILLENEUVE DASCQ, FRANCE

来源：

JOURNAL OF ATMOSPHERIC CHEMISTRY | 1995年 / 22卷 / 1-2期

关键词：

SAVANNA; BIOMASS BURNING; AEROSOL OPTICAL DEPTH; ANGSTROM COEFFICIENT; PARTICLE SIZE DISTRIBUTION; CARBONACEOUS AEROSOL; SMOKE AGING;

D O I：

10.1007/BF00708178

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

During the FOS-DECAFE experiment at Lamto, Ivory Coast, in January 1991, various ground studies were undertaken simultaneously in order to investigate the physical and chemical characteristics of smoke emitted by savanna biomass burning. Here we present sunphotometer ground-based results which allow the measurements of the spectral optical depth between 450 and 850 nm, the atmospheric water vapour content and the particle size distribution spectrum. The carbonaceous content of the savanna biomass burning aerosols is also investigated. This is the first time that the physical characteristics of particles emitted by savanna plumes are obtained from ground-field studies. All the results suggest that a rapid aging of the smoke occurs first hundred metres from the savanna fire emission source. They show a relationship between the optical properties of smoke and the chemical aging of the aerosols primarily due to particle growth and a loss of organic material relative to the black carbon content.

引用

页码：1 / 17

页数：17

共 46 条

[1] Ackerman T.P., Toon O.B., Absorption of visible radiation in atmosphere containing mixtures of absorbing and nonabsorbing particles, Appl. Opt., 20, pp. 3661-3667, (1981)
[2] Angstrom A., On the atmospheric transmission of sun radiation and on dust in the air, Geogr. Ann., 11, pp. 156-166, (1929)
[3] Bergstrom R.W., Ackerman T.P., Richards L.W., The optical properties of particulate elemental carbon, Particulate Carbon: Atmospheric Life Cycle, pp. 43-49, (1982)
[4] Box M.A., Deepack A., Atmospheric scattering corrections to solar radiometry, Appl. Opt., 18, pp. 1941-1949, (1979)
[5] Cachier H., Bremond M.P., Buat-Menard P., Determination of atmospheric soot carbon with a simple thermal method, Tellus, 41 B, pp. 379-390, (1989)
[6] Cachier H., Ducret J., Bremond M.P., Yoboue V., Lacaux J.P., Gaudichet A., Baudet J., Biomass burning aerosols in a savanna region of the Ivory Coast, Global Biomass Burning, pp. 174-180, (1991)
[7] Cachier H., Liousse C., Buat-Menard P., Gaudichet A., Particulate content of savanna fire emissions, J. Atmos. Chem., 22, pp. 123-148, (1995)
[8] Chylek P., Ramaswamy V., Cheng R., Pinnick R.G., Optical properties and mass concentration of carbonaceous smokes, Appl. Opt., 20, pp. 2980-2984, (1981)
[9] Clarke A.D., Aerosol light absorption by soot in remote environments, Aerosol Sci. Technol., 10, pp. 161-171, (1989)
[10] Coakley J.A., Cess R.D., Yurevich F.B., The effect of tropospheric aerosol on the Earth's radiation budget: A parameterization for climate models, J. Atmos. Sci., 40, (1983)

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