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Proceedings Paper

Sensitivity studies on sulfur dioxide measurements with satellite-borne solar backscattered ultraviolet spectrometer
Author(s): Masaharu Watanabe; Makoto Suzuki; Takuki Sano; Toshihiro Ogawa; Kazuo Shibasaki; Akihiko Kuze; Takahiro Kawashima
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Paper Abstract

The Ozone and Pollution measuring Ultraviolet Spectrometer (OPUS) is scheduled to launch on board the GCOM A1 satellite, to measure ozone, sulfur dioxide (SO2), nitrogen dioxide (NO2) and other chemical species including aerosols. OPUS measures the backscattered ultraviolet radiance with the wavelength step of 0.5 nm in ultraviolet-near infrared regions. This wavelength step is coarse compared with that of GOME, but it was found that this difference do not substantially affect the uncertainty in SO2 estimation. Simulation study using the radiative transfer code of MODTRAN reveals that the wavelength range of 310 - 320 nm was found to be sensitive for SO2 detection in case of solar backscattered radiation measurements from space. We will present the estimation method of total column SO2 amount from the backscattered radiance observed with OPUS, using the fine structure of SO2 absorption spectrum.

Paper Details

Date Published: 24 September 2002
PDF: 11 pages
Proc. SPIE 4814, Earth Observing Systems VII, (24 September 2002); doi: 10.1117/12.451601
Show Author Affiliations
Masaharu Watanabe, National Space Development Agency of Japan (Japan)
Makoto Suzuki, National Space Development Agency of Japan (Japan)
Takuki Sano, National Space Development Agency of Japan (Japan)
Toshihiro Ogawa, National Space Development Agency of Japan (Japan)
Kazuo Shibasaki, National Space Development Agency of Japan and Kokugakuin Univ. (Japan)
Akihiko Kuze, National Space Development Agency of Japan (Japan)
Takahiro Kawashima, NEC-Toshiba Space Systems, Ltd. (Japan)

Published in SPIE Proceedings Vol. 4814:
Earth Observing Systems VII
William L. Barnes, Editor(s)

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