Laboratory measurements of smoke optical properties from the burning of Indonesian peat and other types of biomass

Details Laboratory measurements of smoke optical properties from the burning of Indonesian peat and other types of biomass Laboratory measurements of smoke optical properties from the burning of Indonesian peat and other types of biomass

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3212819c&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 12, CiteID L12819

Other

7

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Cloud/Radiation Interaction, Atmospheric Processes: Clouds And Aerosols, Atmospheric Processes: Radiative Processes

Scientific paper

We present the first results on optical properties (λ ~ 540 nm) of fresh aerosols from the combustion of Indonesian peat, German peat and other types of biomass, measured under controlled laboratory conditions. The mass scattering and mass absorption efficiencies for Indonesian and German peat aerosols are in the range of 6.0-8.1 and 0.04-0.06 m2 g-1, respectively. A very high single scattering albedo (0.99) is observed for the peat smoke aerosols, reflecting the smoldering burning conditions (emission ratio, ΔCO/ΔCO2 = 19-50%). The relative increase in light scattering (f(RH)) due to an increase in relative humidity (RH) from 15% to 90% is very low (i.e., f(90) = 1.05) for both Indonesian and German peat aerosols. This value is considerably smaller than for aged Indonesian peat smoke particles (f(80) = 1.65) [Gras et al., 1999]. This suggests that atmospheric aging processes may be an important factor for aerosol hygroscopicity.

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