Test measurements by a BBM of the nadir-looking SWIR FTS aboard GOSAT to monitor CO2 column density from space

Tatsuya Yokota; Hiroyuki Oguma; Isamu Morino; Akiko Higurashi; Tadao Aoki; Gen Inoue

doi:10.1117/12.578497

30 December 2004 Test measurements by a BBM of the nadir-looking SWIR FTS aboard GOSAT to monitor CO₂ column density from space

Tatsuya Yokota, Hiroyuki Oguma, Isamu Morino, Akiko Higurashi, Tadao Aoki, Gen Inoue

Author Affiliations +

Proceedings Volume 5652, Passive Optical Remote Sensing of the Atmosphere and Clouds IV; (2004) https://doi.org/10.1117/12.578497
Event: Fourth International Asia-Pacific Environmental Remote Sensing Symposium 2004: Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2004, Honolulu, Hawai'i, United States

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.

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Tatsuya Yokota, Hiroyuki Oguma, Isamu Morino, Akiko Higurashi, Tadao Aoki, and Gen Inoue "Test measurements by a BBM of the nadir-looking SWIR FTS aboard GOSAT to monitor CO₂ column density from space", Proc. SPIE 5652, Passive Optical Remote Sensing of the Atmosphere and Clouds IV, (30 December 2004); https://doi.org/10.1117/12.578497

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