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  2. 村上 真也

村上 真也

ムラカミ シンヤ  (Shin-ya MURAKAMI)

基本情報

所属
国立研究開発法人宇宙航空研究開発機構 宇宙科学研究所 月惑星探査データ解析グループ 主任研究開発員
学位
博士(理学)(2011年3月 神戸大学)
研究者番号
40769783
ORCID ID
 https://orcid.org/0000-0002-7137-4849
J-GLOBAL ID
201501011383506237
researchmap会員ID
B000249646

惑星探査データのデータ処理、アーカイブ整備に携わる。

 

参加している惑星探査ミッション

  • あかつき レベル2データ処理チーム (2013年4月～)、レベル3データ処理チーム (2015年6月～)、雲追跡チーム (2015年6月～)、IR1チーム (2017年10月～)
  • はやぶさ2  データアーカイブチーム (2017年10月～)、着陸候補地点選定解析評価チーム (2018年7月～)
  • MMX データ処理ワーキングチーム(DPWT) (2022年6月～)、LSS-DP/LSS-AA (2022年9月～)

研究キーワード

 6

研究分野

 2

経歴

 12
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学歴

 4

論文

 40
  • Takeshi Horinouchi, Toru Kouyama, Masataka Imai, Shin‐ya Murakami, Yeon Joo Lee, Atsushi Yamazaki, Manabu Yamada, Shigeto Watanabe, Takeshi Imamura, Javier Peralta, Takehiko Satoh
    Journal of Geophysical Research: Planets 2024年3月  
  • Makoto Taguchi, Toru Kouyama, Temma Sugawa, Shin-ya Murakami, Masahiko Futaguchi
    Earth, Planets and Space 2023年4月10日  
  • Yukiko Fujisawa, Shin-ya Murakami, Norihiko Sugimoto, Masahiro Takagi, Takeshi Imamura, Takeshi Horinouchi, George L. Hashimoto, Masaki Ishiwatari, Takeshi Enomoto, Takemasa Miyoshi, Hiroki Kashimura, Yoshi-Yuki Hayashi
    2022年9月23日  
  • Yukiko Fujisawa, Shin-ya Murakami, Norihiko Sugimoto, Masahiro Takagi, Takeshi Imamura, Takeshi Horinouchi, George L. Hashimoto, Masaki Ishiwatari, Takeshi Enomoto, Takemasa Miyoshi, Hiroki Kashimura, Yoshi-Yuki Hayashi
    Scientific Reports 12(1) 2022年8月26日  査読有り
    Abstract The planetary missions including the Venus Climate Orbiter ‘Akatsuki’ provide new information on various atmospheric phenomena. Nevertheless, it is difficult to elucidate their three-dimensional structures globally and continuously only from observations because satellite observations are considerably limited in time and space. We constructed the first ‘objective analysis’ of Venus’ atmosphere by assimilating cloud-top horizontal winds on the dayside from the equator to mid-latitudes, which is frequently obtained from Akatsuki's Ultraviolet Imager (UVI). The three-dimensional structures of thermal tides, found recently to play a crucial role in maintaining the super rotation, are greatly improved by the data assimilation. This result is confirmed by comparison with Akatsuki's temperature observations. The momentum transport caused by the thermal tides and other disturbances are also modified by the wind assimilation and agrees well with those estimated from the UVI observations. The assimilated dataset is reliable and will be open to the public along with the Akatsuki observations for further investigation of Venus’ atmospheric phenomena.
  • Norihiko Sugimoto, Yukiko Fujisawa, Mimo Shirasaka, Mirai Abe, Shin-ya Murakami, Toru Kouyama, Hiroki Ando, Masahiro Takagi, Masaru Yamamoto
    Atmosphere 13(2) 182-182 2022年1月24日  
    <jats:p>At the cloud top of the Venus atmosphere, equatorial Kelvin waves have been observed and are considered to play an important role in the super-rotation. We were able to reproduce the wave in a general circulation model (GCM) by conducting an observing system simulation experiment (OSSE) with the help of a data assimilation system. The synthetic horizontal winds of the Kelvin wave produced by the linear wave propagating model are assimilated at the cloud top (~70 km) in realistic conditions, assuming they are obtained from cloud tracking of ultra-violet images (UVI) taken by the Venus orbiters. It is demonstrated using Eliassen–Palm (EP) fluxes that the reproduced Kelvin wave transports angular momentum and plays an important role in the magnitude and structure of the super-rotation, causing the acceleration and deceleration of zonal wind of ~0.1 m/s day−1. The conditions required in order to reproduce the Kelvin wave have also been investigated. It is desirable to have 24 hourly dayside satellite observations in an equatorial orbit, such as the Akatsuki Venus climate orbiter. The results of this type of data assimilation study will be useful in the planning of future observation missions to the atmospheres of planets.</jats:p>
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MISC

 18
  • 杉山耕一朗, 村社光誠, 村社光誠, 村上真也, 村上真也
    宇宙航空研究開発機構研究開発報告 JAXA-RR-(Web) (20-010) 2021年  
  • 平田成, 平田直之, 野口里奈, 嶌生有理, 杉田精司, 松本晃治, 千秋博紀, 山本幸生, 村上真也, 村上真也, 石原吉明, 津田雄一, 渡邊誠一郎, GASKELL Robert, PALMER Eric
    日本惑星科学会秋季講演会予稿集(Web) 2020 2020年  
  • Imamura, T., Ando, H., Tellmann, S., P{\"a}tzold, M., H{\"a}usler, B., Yamazaki, A., Sato, T.M., Noguchi, K., Futaana, Y., Oschlisniok, J., Limaye, S., Choudhary, R.K., Murata, Y., Takeuchi, H., Hirose, C., Ichikawa, T., Toda, T., Tomiki, A., Abe, T., Yamamoto, Z.-I., Noda, H., Iwata, T., Murakami, S.-Y., Satoh, T., Fukuhara, T., Ogohara, K., Sugiyama, K.-I., Kashimura, H., Ohtsuki, S., Takagi, S., Yamamoto, Y., Hirata, N., Hashimoto, G.L., Yamada, M., Suzuki, M., Ishii, N., Hayashiyama, T., Lee, Y.J., Nakamura, M.
    Earth, Planets and Space 69(1) 2017年12月1日  
    © 2017 The Author(s). After the arrival of Akatsuki spacecraft of Japan Aerospace Exploration Agency at Venus in December 2015, the radio occultation experiment, termed RS (Radio Science), obtained 19 vertical profiles of the Venusian atmosphere by April 2017. An onboard ultra-stable oscillator is used to generate stable X-band downlink signals needed for the experiment. The quantities to be retrieved are the atmospheric pressure, the temperature, the sulfuric acid vapor mixing ratio, and the electron density. Temperature profiles were successfully obtained down to ~ 38 km altitude and show distinct atmospheric structures depending on the altitude. The overall structure is close to the previous observations, suggesting a remarkable stability of the thermal structure. Local time-dependent features are seen within and above the clouds, which is located around 48-70 km altitude. The H2SO4vapor density roughly follows the saturation curve at cloud heights, suggesting equilibrium with cloud particles. The ionospheric electron density profiles are also successfully retrieved, showing distinct local time dependence. Akatsuki RS mainly probes the low and middle latitude regions thanks to the near-equatorial orbit in contrast to the previous radio occultation experiments using polar orbiters. Studies based on combined analyses of RS and optical imaging data are ongoing.[Figure not available: see fulltext.]
  • 村上真也, 山本幸生, はしもとじょーじ, 山田学, 山﨑敦, 佐藤隆雄, 小郷原一智, 平田成, 高木征弘, Kevin McGouldrick
    日本惑星科学会誌遊星人 26(3) 92-96 2017年  筆頭著者責任著者
    <p> 金星探査機「あかつき」によって取得されたデータのアーカイブを 2017年 7月に公開しました．本稿ではデータアーカイブの概要と今後のリリース予定について紹介します．</p>
  • 福原哲哉, はしもと じょーじ, 堀之内武, 今村剛, 岩上直幹, 神山徹, 村上真也, 中村正人, 小郷原一智, 佐藤光輝, 佐藤隆雄, 鈴木睦, 田口真, 高木聖子, 上野宗孝, 渡部重十, 山田学
    日本気象学会大会講演予稿集 (110) 2016年  
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講演・口頭発表等

 39
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所属学協会

 6
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共同研究・競争的資金等の研究課題

 3
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