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Proceedings Paper

Test measurements by a BBM of the nadir-looking SWIR FTS aboard GOSAT to monitor CO2 column density from space
Author(s): Tatsuya Yokota; Hiroyuki Oguma; Isamu Morino; Akiko Higurashi; Tadao Aoki; Gen Inoue
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Paper Abstract

Greenhouse gases Observing SATellite (GOSAT) is a Japanese satellite to monitor column density of greenhouse gases such as carbon dioxide (CO2) and methane (CH4) globally from space. GOSAT will be launched in 2008. The data measured by a GOSAT sensor and ground-based monitoring station data will be used into an atmospheric transport inverse model to identify source/sink amount of CO2 in a sub-continental scale. One of the main GOSAT sensors is a nadir-looking Fourier Transform Spectrometer (FTS), which covers Short Wavelength Infrared (SWIR) region to measure column density of CO2. National Institute for Environmental Studies (NIES) is promoting researches on CO2 and CH4 sensitivity analysis, error analysis, data retrieval algorithm study, ground-based/air-borne validation strategy, and a plan of inverse model study for the SWIR FTS. A Bread-board model (BBM) of the SWIR FTS was built and tested by ground-based and airborne measurements. Several sets of the CO2 and CH4 radiance spectra over rice fields were obtained by the test measurements, and it was confirmed that the airborne measurements with a vibration insulator are effective for onboard measurements. Moreover, several improvement items of BBM have become clear.

Paper Details

Date Published: 30 December 2004
PDF: 7 pages
Proc. SPIE 5652, Passive Optical Remote Sensing of the Atmosphere and Clouds IV, (30 December 2004); doi: 10.1117/12.578497
Show Author Affiliations
Tatsuya Yokota, National Institute for Environmental Studies (Japan)
Hiroyuki Oguma, National Institute for Environmental Studies (Japan)
Isamu Morino, National Institute for Environmental Studies (Japan)
Akiko Higurashi, National Institute for Environmental Studies (Japan)
Tadao Aoki, National Institute for Environmental Studies (Japan)
Gen Inoue, National Institute for Environmental Studies (Japan)


Published in SPIE Proceedings Vol. 5652:
Passive Optical Remote Sensing of the Atmosphere and Clouds IV
Si Chee Tsay; Tatsuya Yokota; Myoung-Hwan Ahn, Editor(s)

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