A study on the stratospheric circulation by applying gravitational separation
Project/Area Number |
15K05282
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Meteorology/Physical oceanography/Hydrology
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Research Institution | Miyagi University of Education |
Principal Investigator |
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Co-Investigator(Renkei-kenkyūsha) |
Ishidoya Shigeyuki 産業技術総合研究所, 研究グループ付 (70374907)
AOKI Shuji 東北大学, 大学院理学研究科, 教授 (00183129)
MORIMOTO Shinji 東北大学, 大学院理学研究科, 教授 (30270424)
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Research Collaborator |
Honda Hideyuki 宇宙科学研究所, 科学衛星運用・データ利用ユニット, 嘱託
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Project Period (FY) |
2015-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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Keywords | 成層圏 / 大気年代 / 重力分離 |
Outline of Final Research Achievements |
The gravitational separation of major atmospheric components, in addition to the age of air, would provide additional useful information about the stratospheric circulation. Air samples were collected over Biak, Indonesia in February 2015 using four large plastic balloons. Air samples from seven different altitudes were analyzed for CO2 and SF6 mole fractions, δ15N of N2, δ18O of O2, and δ(Ar/N2), to examine vertically dependent age and gravitational separation of air in the Tropical Tropopause Layer (TTL) and the equatorial stratosphere. The average values of δ all show small but distinct upward decrease due to the gravitational separation effect. Simulations with a two-dimensional atmospheric transport model indicate that the gravitational separation effect decreases as tropical upwelling is enhanced. The results of this study strongly suggest that the gravitational separation, combined with the age of air, can be used to diagnose air transport processes in the stratosphere.
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Report
(4 results)
Research Products
(21 results)
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[Journal Article] Vertical Profiles and Temporal Variations of Greenhouse Gases in the Stratosphere over Syowa Station, Antarctica2017
Author(s)
Goto, D., S. Morimoto, S. Aoki, S. Sugawara, S. Ishidoya, Y. Inai, S. Toyoda, H. Honda, G. Hashida, T. Yamanouchi and T. Nakazawa
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Journal Title
SOLA
Volume: 13
Issue: 0
Pages: 224-229
DOI
NAID
ISSN
1349-6476
Related Report
Peer Reviewed / Open Access
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[Journal Article] インドネシア・ビアク島におけるクライオジェニックサンプラー回収気球実験2017
Author(s)
池田 忠作, 青木 周司, 森本 真司, 菅原 敏, 本田 秀之, 豊田 栄, 石戸谷 重之, 中澤 高清, 長谷部 文雄, 稲飯 洋一, 林 政彦, 柴田 隆, 後藤 大輔, Halimurrahman Mukri, Moedji Soedjarwo, Ninong Komala, Fanny A. Putri, Thohirin Chodijah, Agus Hidayat, Afif Budiyono, Thomas Djamaluddin, 飯嶋 一征, 田村 誠, 井筒 直樹, 吉田 哲也
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Journal Title
宇宙航空研究開発機構研究開発報告
Volume: JAXA-RR-16-008
Pages: 33-48
URL
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Twenty-three year record of the mid-stratospheric 13CO2 over Japan2017
Author(s)
Sugawara, S., Ishidoya, S., Morimoto, S., Aoki, S., Nakazawa, T., Umezawa, T., Toyoda, S., Honda, H.
Organizer
10th International Carbon Dioxide Conference 2017
Related Report
Int'l Joint Research
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[Presentation] Age of air and gravitational separation in the stratosphere over Indonesia2016
Author(s)
Satoshi SUGAWARA, S. ISHIDOYA, S. AOKI, S. MORIMOTO, T. NAKAZAWA, S. TOYODA, Y. INAI, F. HASEBE, C. IKEDA, H. HONDA, D. GOTO, and F. PUTRI
Organizer
2016 AGU Fall Meeting
Place of Presentation
San Francisco, USA
Year and Date
2016-12-12
Related Report
Int'l Joint Research
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[Presentation] 赤道上空成層圏における N2O 同位体比の鉛直分布2016
Author(s)
豊田 栄, 吉田 尚弘, 森本 真司, 青木 周司, 中澤 高清, 菅原 敏, 石戸谷 重之, 植松 光夫, 稲飯 洋一, 長谷部 文雄, 池田 忠作, 本田 秀之, 石島 健太郎
Organizer
平成28年度大気球シンポジウム
Place of Presentation
宇宙科学研究所(神奈川県相模原市)
Year and Date
2016-11-01
Related Report
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[Presentation] Vertical distributions of N2O isotopocules in the equatorial stratosphere2016
Author(s)
Sakae TOYODA, Naohiro YOSHIDA, Shinji MORIMOTO, Shuji AOKI, Takakiyo NAKAZAWA, Satoshi SUGAWARA, Shigeyuki ISHIDOYA, Mitsuo UEMATSU, Yoichi INAI, Fumio HASEBE, Chusaku IKEDA, Hideyuki HONDA, and Kentaro ISHIJIMA
Organizer
The 8th International Symposium on Isotopomers
Place of Presentation
Nantes, France
Year and Date
2016-10-04
Related Report
Int'l Joint Research
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[Presentation] インドネシアにおける成層圏大気サンプリング気球実験の結果2015
Author(s)
菅原敏, 青木周司, 森本真司, 中澤高清, 石戸谷重之, 豊田栄, 長谷部文雄,稲飯洋一,後藤大輔,本田秀之, 池田忠作, 飯嶋一征,田村誠,井筒直樹, 吉田哲也,PutriFanny
Organizer
宇宙科学研究所大気球シンポジウム
Place of Presentation
宇宙科学研究所(神奈川県相模原市)
Year and Date
2015-11-05
Related Report
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