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Numerical study on unsteady analysis fo compressible flow

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23ETET00 Subject Category: Skills Acquisition System PDF Responsible Representative: Kazuyuki Nakakita, Aviation Technology Directorate, Aircraft Lifecycle Innovation Hub Contact Information: Nobutaka Taniguchi(taniguchi-nobutaka@g.ecc.u-tokyo.ac.jp) Members: Nobutaka Taniguchi Abstract Stability analysis is a method to investigate the time-evolution of disturbance field applied to the flow field. In this study, we develop a numerical method suitable for the analysis of compressible flow considering the accurate track of nonlinear time-evolution of the disturbance field. To・・・<<read more>>

Retrieval of greenhouse gas concentrations from GOSAT-2 observations

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23ER3501 Subject Category: Space Technology PDF Responsible Representative: KUZE Akihiko, GOSAT-2 Project Team, Space Technology Directorate I Contact Information: Nobuhiro Kikuchi (Earth Observation Research Center)(kikuchi.nobuhiro@jaxa.jp) Members: Makiko Hashimoto, Kenji Kowata, Fumie Kataoka, Nobuhiro Kikuchi, Hideyuki Noguchi, Kei Shiomi, Hiroshi Suto, Atsushi Sugano, Shigeaki Wada, Takehito Yoshida Abstract Atmospheric concentrations of carbon dioxide, methane and carbon monoxide are retrieved from hyper sectral data measured by The Greenhouse Gasea Observing Sattelite 2・・・<<read more>>

Greenhouse gases Observing SATellite-2 (GOSAT-2) Project

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23ER3500 Subject Category: Space Technology PDF Responsible Representative: KUZE Akihiko, GOSAT-2 Project Team, Space Technology Directorate I Contact Information: Yoko Ueda(ueda.yoko@jaxa.jp) Members: Makiko Hashimoto, Kenji Kowata, Fumie Kataoka, Yuki Kobayashi, Nobuhiro Kikuchi, Taro Makino, Tomoyuki Mabuchi, Takaaki Nishino, Kohei Sugimoto, Hiroshi Suto, Yoko Ueda, Shigeaki Wada, Yugi Yata Abstract GOSAT-2 project retrieve and estimate the global concentration distribution of major greenhouse gases including the sources and natural absorbers with high・・・<<read more>>

Development of an EnKF-based ocean data assimilation system

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23ER2402 Subject Category: Space Technology PDF Responsible Representative: Misako Kachi, Earth Observation Research Center Contact Information: Misako Kachi(kachi.misako@jaxa.jp) Members: Misako Kachi, Shun Ohishi Abstract With the recent enhancement of ocean observation networks by satellites and Argo profiling floats, spatiotemporally higher-resolution temperature, salinity, and sea surface height have been observed. However, for example, the satellites cannot observe under rainy conditions, and the number of Argo float observations is still not sufficient・・・<<read more>>

GOSAT data analysis and Greenhouse gases Observing SATellite (GOSAT) mission

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23ER2100 Subject Category: Space Technology PDF Responsible Representative: Akihiko Kuze ,Space Technology Directorate I GOSAT-2 Project Team, Project Manager Contact Information: Yoko UEDA, Rio KAJIURA(ueda.yoko@jaxa.jp;kajiura.rio@jaxa.jp) Members: Masahito Arai, Noriko Aramaki, Yoshihiko Fujisaki, Takashi Goto, Makiko Hashimoto, Hidetoshi Hayasaka, Ritsuko Imatani, Makoto Imanaka, Kenji Kowata, Rio Kajiura, Fumie Kataoka, Akihiko Kuze, Takafumi Kinoshita, Nobuhiro Kikuchi, Kazuhiro Matsumoto, Yoichi Nakamura, Ryo Nagino, Takaya Numata, Hiroshi Suto, Yoko Ueda, Kai Uematsu, Shu Yano,・・・<<read more>>