3 October 2011 Update of the GOSAT higher level products 2.5 years after the launch
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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, Hiroshi Watanabe, Akira Yuki, Akira Yuki, Kenji Hayashi, Kenji Hayashi, Fumie Kawazoe, Fumie Kawazoe, Nobuyuki Kikuchi, Nobuyuki Kikuchi, Fumiho Takahashi, Fumiho Takahashi, Tsuneo Matsunaga, Tsuneo Matsunaga, Tatsuya Yokota, 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); doi: 10.1117/12.898391; https://doi.org/10.1117/12.898391
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