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| Titel |
Optical closure experiments for biomass smoke aerosols |
| VerfasserIn |
L. A. Mack, E. J. T. Levin, S. M. Kreidenweis, D. Obrist, H. Moosmüller, K. A. Lewis, W. P. Arnott, G. R. McMeeking, A. P. Sullivan, C. E. Wold, W.-M. Hao, J. L. Collett, W. C. Malm |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 18 ; Nr. 10, no. 18 (2010-09-29), S.9017-9026 |
| Datensatznummer |
250008793
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| Publikation (Nr.) |
 copernicus.org/acp-10-9017-2010.pdf |
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| Zusammenfassung |
| A series of laboratory experiments at the Fire Laboratory at Missoula
(FLAME) investigated chemical, physical, and optical properties of fresh
smoke samples from combustion of wildland fuels that are burned annually in
the western and southeastern US The burns were conducted in the combustion
chamber of the US Forest Service Fire Sciences Laboratory in Missoula,
Montana. Here we discuss retrieval of optical properties for a variety of
fuels burned in FLAME 2, using nephelometer-measured scattering
coefficients, photoacoustically-measured aerosol absorption coefficients,
and size distribution measurements. Uncertainties are estimated from various
instrument characteristics and instrument calibration studies. Our estimates
of single scattering albedo for different dry smoke samples varied from
0.428 to 0.990, indicative of observed wide variations in smoke aerosol
chemical composition. In selected case studies, we retrieved the complex
refractive index from measurements but show that these are highly sensitive
to uncertainties in measured size distributions. |
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