Update of the GOSAT higher level products 2.5 years after the launch

Hiroshi Watanabe; Akira Yuki; Kenji Hayashi; Fumie Kawazoe; Nobuyuki Kikuchi; Fumiho Takahashi; Tsuneo Matsunaga; Tatsuya Yokota

doi:10.1117/12.898391

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3 October 2011 Update of the GOSAT higher level products 2.5 years after the launch

Hiroshi Watanabe, Akira Yuki, Kenji Hayashi, Fumie Kawazoe, Nobuyuki Kikuchi, Fumiho Takahashi, Tsuneo Matsunaga, Tatsuya Yokota

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Proceedings Volume 8176, Sensors, Systems, and Next-Generation Satellites XV; 81760I (2011) https://doi.org/10.1117/12.898391
Event: SPIE Remote Sensing, 2011, Prague, Czech Republic

Abstract

During the 2.5 year operation of GOSAT (Greenhouse gases Observing SATellite), NIES GOSAT DHF (GOSAT Data Handling Facility of National Institute for Environmental Studies) has been producing CAI Level 1B and 1B+, FTS Level 2 SWIR (column amount of CO2 and CH₄), CAI Level 2 (cloud flag ), FTS Level 3 products (global map of XCO2, XCH4,) and CAI Level 3 (global radiance and global reflectance), receiving FTS Level 1A/1B, and CAI Level 1A data from JAXA (FTS: Fourier Transform Spectrometer; CAI: Cloud and Aerosol Imager, JAXA: Japan Aerospace eXploration Agency). In addition, FTS Level 2 TIR are released to RA users. FTS Level 3 TIR, and Level 4A and 4B products (emission/absorption and 3D global distribution of CO2) will be released in the near future.. Since the FTS Level 2 SWIR data have been accumulated more than 2.5 years, global trends can be observed, while the validation results show negative bias of 2 to 3 % for CO₂ and negative bias of 1 to 2 % for CH₄. A comparison with the results by different algorithms is also conducted. All the mentioned data products are distributed through a website, the GOSAT User Interface Gateway (GUIG), and users of the products include the researchers responded to the three Research Announcements (RA) and general users (GU). Number of the RA users exceeds 100 and that for GU exceeds 1100.

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Hiroshi Watanabe, Akira Yuki, Kenji Hayashi, Fumie Kawazoe, Nobuyuki Kikuchi, Fumiho Takahashi, Tsuneo Matsunaga, and Tatsuya Yokota "Update of the GOSAT higher level products 2.5 years after the launch", Proc. SPIE 8176, Sensors, Systems, and Next-Generation Satellites XV, 81760I (3 October 2011); https://doi.org/10.1117/12.898391

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