论文信息 - Discrimination and retrieval of aerosol types using multi-channels including near-UV and polarization by GCOM-C/SGLI

Discrimination and retrieval of aerosol types using multi-channels including near-UV and polarization by GCOM-C/SGLI

The second global imager (SGLI) is on board the Japanese mission GCOM-C (SHIKISAI in Japanese), which was launched on December 23, 2017. The SGLI has multiple channels (19), including near-UV (0.380 μm) and violet (0.412 μm) wavelengths, and polarization channels in the red and near-IR wavelengths. This study aimed to demonstrate such advantages of SGLI as near-UV and polarization measurements for aerosol remote sensing. The role of near UV data in the detection of absorbing aerosols, such as biomass burning aerosols (BBA) or mineral dust, is examined on a global scale. Not only is this absorbing aerosol index defined in the near-UV wavelength region, but short wavelength infrared measurements were utilized to discriminate BBA from mineral dust particles. First, an understanding of aerosol types facilitates subsequent aerosol retrieval. Then, the characterization for classified aerosols is made based on the radiation simulations with multi-spectral radiance and polarization measurements in the red and near- IR.

Sonoyo Mukai | Itaru Sano | Makiko Nakata

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