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Proceedings Paper

Characterization and validation of CO2 and CH4 products derived from the GOSAT thermal infrared band
Author(s): Tomoaki Tanaka; Kei Shiomi; Shuji Kawakami; Naoko Saitoh; Ryoichi Imasu; Makoto Inoue; Isamu Morino; Osamu Uchino; Colm Sweeney; Pieter Tans
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Paper Abstract

The Greenhouse gases Observing SATellite (GOSAT) monitors carbon dioxide (CO2) and methane (CH4) globally from space. The Thermal and Near infrared Sensor for Carbon Observation Fourier-Transform Spectrometer (TANSO-FTS) installed on GOSAT measures spectra absorbed by atmospheric minor components including greenhouse gases in infrared wavelength regions. This paper describes the characterization and validation of the CO2 and CH4 profiles retrieved from the thermal infrared (TIR) spectra observed by GOSAT. The retrieved CO2 and CH4 profiles were compared with the corresponding aircraft data provided by the National Oceanic and Atmospheric Administration (NOAA)/Earth System Research Laboratory (ESRL)/Global Monitoring Division (GMD)/Carbon Cycle Greenhouse Gases(CCGG) group. This group has conducted an aircraft program since 1992 to collect air samples mainly in North America. Each insitu aircraft profile was compared with those retrieved from TIR spectra without considering the effect of its averaging kernel. The root mean square (RMS) and bias errors of the retrieved CO2 and CH4 profiles were evaluated seasonally and with respect to atmospheric pressure. This comparison with aircraft data provides significant information for further improvement of the TIR retrieval algorithm.

Paper Details

Date Published: 28 November 2012
PDF: 4 pages
Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II, 852810 (28 November 2012); doi: 10.1117/12.979663
Show Author Affiliations
Tomoaki Tanaka, Japan Aerospace Exploration Agency (Japan)
Kei Shiomi, Japan Aerospace Exploration Agency (Japan)
Shuji Kawakami, Japan Aerospace Exploration Agency (Japan)
Naoko Saitoh, Chiba Univ. (Japan)
Ryoichi Imasu, The Univ. of Tokyo (Japan)
Makoto Inoue, National Institute for Environmental Studies (Japan)
Isamu Morino, National Institute for Environmental Studies (Japan)
Osamu Uchino, National Institute for Environmental Studies (Japan)
Colm Sweeney, National Oceanic and Atmospheric Administration (United States)
Pieter Tans, National Oceanic and Atmospheric Administration (United States)


Published in SPIE Proceedings Vol. 8528:
Earth Observing Missions and Sensors: Development, Implementation, and Characterization II
Haruhisa Shimoda; Xiaoxiong Xiong; Changyong Cao; Xingfa Gu; Choen Kim; A. S. Kiran Kumar, Editor(s)

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