CAPABILITY OF VERTICAL INFORMATION OF BIOMASS BURNING AEROSOL PLUMES FROM SGLI'S SIMULTANEOUS OBSERVATIONS WITH RADIANCE AND POLARIZATION

This study shows a method for the direct detection of severe biomass burning aerosols ( SBBAs) from SGLI data. Polarization data derived from polarization remote sensing was incorporated to improve the detection accuracy. This is possible because the SGLI is a multi-wavelength sensor consisting of 19 channels from 380 nm in the near-UV to thermal infrared, including red (674 nm) and near-infrared (869 nm) polarization channels. In order to examine the difference between radiance and polarized radiance distributions, BC aerosol distributions by altitude obtained from chemical transport model simulations were used. The radiance distribution corresponds well to the aerosol distribution in the vertical integration, and the polarized radiance corresponds well to the aerosol distribution in the upper layers. That is, polarization information is useful for understanding aerosols in the upper layer of the atmosphere at the time of observation.