Preliminary validation of Himawari-8/AHI navigation and calibration

Arata Okuyama; Akiyoshi Andou; Kenji Date; Keita Hoasaka; Nobutaka Mori; Hidehiko Murata; Tasuku Tabata; Masaya Takahashi; Ryoko Yoshino; Kotaro Bessho

doi:10.1117/12.2188978

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8 September 2015 Preliminary validation of Himawari-8/AHI navigation and calibration

Arata Okuyama, Akiyoshi Andou, Kenji Date, Keita Hoasaka, Nobutaka Mori, Hidehiko Murata, Tasuku Tabata, Masaya Takahashi, Ryoko Yoshino, Kotaro Bessho

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Proceedings Volume 9607, Earth Observing Systems XX; 96072E (2015) https://doi.org/10.1117/12.2188978
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The next-generation geostationary meteorological satellite of the Japan Meteorological Agency (JMA), Himawari-8, entered operation on 7 July 2015. Himawari-8 features the new 16-band Advanced Himawari Imager (AHI), whose spatial resolution and observation frequency are improved over those of its predecessor MTSAT-series satellites. These improvements will bring unprecedented levels of performance in nowcasting services and short-range weather forecasting systems. In view of the essential nature of navigation and radiometric calibration in fully leveraging the imager’s potential, this study reports on the current status of navigation and calibration for the AHI. Image navigation is accurate to within 1 km, and band-to-band co-registration has also been validated. Infrared-band calibration is accurate to within 0.2 K with no significant diurnal variation, and is being validated using an approach developed under the GSICS project. Validation approaches are currently being tested for the visible and near-infrared bands. In this study, two of such approaches were compared and found to produce largely consistent results.

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Arata Okuyama, Akiyoshi Andou, Kenji Date, Keita Hoasaka, Nobutaka Mori, Hidehiko Murata, Tasuku Tabata, Masaya Takahashi, Ryoko Yoshino, and Kotaro Bessho "Preliminary validation of Himawari-8/AHI navigation and calibration", Proc. SPIE 9607, Earth Observing Systems XX, 96072E (8 September 2015); https://doi.org/10.1117/12.2188978

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