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Modeled spectral optical properties for smoke aerosols in Amazonia
Author(s) -
Procopio A. S.,
Remer L. A.,
Artaxo P.,
Kaufman Y. J.,
Holben B. N.
Publication year - 2003
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2003gl018063
Subject(s) - aerosol , sun photometer , aeronet , environmental science , atmospheric sciences , wavelength , amazon rainforest , forcing (mathematics) , mie scattering , angstrom exponent , range (aeronautics) , optical depth , photometer , remote sensing , meteorology , materials science , physics , optics , light scattering , scattering , geology , ecology , composite material , biology
The optical properties of aerosols from biomass burning in Brazil were derived from measurements by the AERONET sun photometer network in Amazonia. A dynamical aerosol model was constructed from Mie Theory calculations, using as input a constant complex refractive index and the average size distribution of aerosols for 12 ranges of aerosol optical thickness. The aerosol optical properties were described for 24 wavelengths in the spectral range of 0.20–3.00 μm. The model was used to simulate radiances and irradiances and the results agreed well with the measurements. The derived optical model is immediately applicable to estimate aerosol forcing by biomass burning aerosol emitted on the development frontier in Amazonia.