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Proceedings Paper

Estimation of optical parameters of yellow sand dust clouds over land surface
Author(s): Takashi Kusaka; Shuhei Mori; Taichi Suzuki; Hideyoshi Takenaka
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Paper Abstract

The optical parameters of the hazy yellow sand dust over the Takula Makan desert in China and the surface reflectance were estimated, using multi-viewing reflectances and polarizations at the wavelength 443nm in several points selected from ADEOS/POLDER data taken on April 10, 1997. In this case, it was assumed that the land surface is the diffuse reflector and the number size distribution of yellow sands is represented by the Junge power-law. The optical parameters of dust clouds and the ground reflectance were determined such that the relative absolute error between the observed reflectance and polarization and those obtained from the simulation of radiative transfer in the atmosphere-ground system is minimum. As a result, it was found that the refractive index of yellow sand dust is 1.36 to 1.45, the optical thickness of dust clouds is 0.44 to 0.54, the index of Junge power-law is -4.2 to -5.0 and the surface reflectance is 0.1 to 0.17.

Paper Details

Date Published: 31 January 2002
PDF: 7 pages
Proc. SPIE 4539, Remote Sensing of Clouds and the Atmosphere VI, (31 January 2002);
Show Author Affiliations
Takashi Kusaka, Kanazawa Institute of Technology (Japan)
Shuhei Mori, Kanazawa Institute of Technology (Japan)
Taichi Suzuki, Kanazawa Institute of Technology (Japan)
Hideyoshi Takenaka, Kanazawa Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 4539:
Remote Sensing of Clouds and the Atmosphere VI
Klaus Schaefer; Olga Lado-Bordowsky; Adolfo Comeron; Michel R. Carleer; Janet S. Fender, Editor(s)

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