Optical properties of humic-like substances (HULIS) in biomass-burning aerosols

Abstract. We present here the optical properties of humic-like substances (HULIS) isolated from the fine fraction of biomass-burning aerosol collected in the Amazon basin during the LBA-SMOCC (Large scale Biosphere atmosphere experiment in Amazonia – SMOke aerosols, Clouds, rainfall and Climate) experiment in September 2002. From the isolated HULIS, aerosol particles were generated and their scattering and absorption coefficients measured. The size distribution and mass of the particles were also recorded. The value of the index of refraction was derived from "closure" calculations based on particle size, scattering and absorption measurements. On average, the complex index of refraction at 532 nm of HULIS…

• EC
  European Commission

  Award: EVK2-CT-2001-00110 SMOCC
• HS
  Hungarian Scientific Research Fund
• M
  Max-Planck-Gesellschaft
• HS
  Hungarian Science Foundation