Characterization and validation of CO2 and CH4 products derived from the GOSAT thermal infrared band

Tomoaki Tanaka; Kei Shiomi; Shuji Kawakami; Naoko Saitoh; Ryoichi Imasu; Makoto Inoue; Isamu Morino; Osamu Uchino; Colm Sweeney; Pieter Tans

doi:10.1117/12.979663

28 November 2012 Characterization and validation of CO₂ and CH₄ products from the GOSAT thermal infrared band

Tomoaki Tanaka, Kei Shiomi, Shuji Kawakami, Naoko Saitoh, Ryoichi Imasu, Makoto Inoue, Isamu Morino, Osamu Uchino, Colm Sweeney, Pieter Tans

Author Affiliations +

Proceedings Volume 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II; 852810 (2012) https://doi.org/10.1117/12.979663
Event: SPIE Asia-Pacific Remote Sensing, 2012, Kyoto, Japan

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.

Citation Download Citation

Tomoaki Tanaka, Kei Shiomi, Shuji Kawakami, Naoko Saitoh, Ryoichi Imasu, Makoto Inoue, Isamu Morino, Osamu Uchino, Colm Sweeney, and Pieter Tans "Characterization and validation of CO₂ and CH₄ products from the GOSAT thermal infrared band", Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II, 852810 (28 November 2012); https://doi.org/10.1117/12.979663

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