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2019 Fiscal Year Annual Research Report

ENSO気候変動は超高層大気をどう揺らすのか:成層圏オゾンが果たす役割の解明

Research Project

Project/Area Number 18H01270
Research InstitutionKyushu University

Principal Investigator

Liu Huixin  九州大学, 理学研究院, 准教授 (70589639)

Co-Investigator(Kenkyū-buntansha) 山本 衛  京都大学, 生存圏研究所, 教授 (20210560)
江口 菜穂  九州大学, 応用力学研究所, 助教 (50378907)
陣 英克  国立研究開発法人情報通信研究機構, 電磁波研究所宇宙環境研究室, 主任研究員 (60466240)
廣岡 俊彦  九州大学, 理学研究院, 教授 (90253393)
Project Period (FY) 2018-04-01 – 2022-03-31
Keywords大気圏・電離圏結合
Outline of Annual Research Achievements

本研究では、地面から数百km上空までの大気圏・電離圏結合のメカニズムへの理解を目指し、さまざまな気象現象が超高層大気へ及ぼす影響を観測と数値シミュレーションを用いて解明している。今年度は対流圏温暖化を引き起こした二酸化炭素の上昇を考慮した大気圏・電離圏結合の変動を大気モデルを用いて数値実験を行いた。主に、二酸化炭素を340ppmvから2倍になる時、熱圏・電離圏がどのように変化するかを調べた。その結果、熱圏は寒冷化されるとともに、大気循環も強まるというダイナミックの変化が明らかになった。これにより、電離圏密度分布が変わり、エルニーニョなどの気象現象に対する反応も変調される。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

計画した数値シミュレーションは順調に行うことができ、論文も発表した。

Strategy for Future Research Activity

今後観測とさらに比較し、モデルと観測のずれを理解する。

  • Research Products

    (14 results)

All 2021 2020

All Journal Article (9 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 9 results,  Open Access: 9 results) Presentation (5 results) (of which Int'l Joint Research: 5 results,  Invited: 5 results)

  • [Journal Article] Space Weather as the Nexus of Applied and Fundamental Space Science: The Need for Separate Funding Mechanisms and Definition2021

    • Author(s)
      Space Weather Editors
    • Journal Title

      Space Weather

      Volume: 19 Pages: -

    • DOI

      10.1029/2020SW002695

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Characteristics of Summer Descending Sporadic E Layer Observed With the Ionosondes in the China Region2021

    • Author(s)
      Qiu Lihui、Zuo Xiaomin、Yu Tao、Sun Yangyi、Liu Huixin、Sun Lingfeng、Zhao Biqiang
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126

    • DOI

      10.1029/2020JA028729

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Gravity Wave Weakening During the 2019 Antarctic Stratospheric Sudden Warming2021

    • Author(s)
      Kogure Masaru、Yue Jia、Liu Huixin
    • Journal Title

      Geophysical Research Letters

      Volume: 48

    • DOI

      10.1029/2021GL092537

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dipolar elementary current systems for ionospheric current reconstruction at low and middle latitudes2020

    • Author(s)
      Vanhamki Heikki、Maute Astrid、Alken Patrick、Liu Huixin
    • Journal Title

      Earth, Planets and Space

      Volume: 72 Pages: -

    • DOI

      10.1186/s40623-020-01284-1

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Circulation and Tides in a Cooler Upper Atmosphere: Dynamical Effects of CO <sub>2</sub> Doubling2020

    • Author(s)
      Liu Huixin、Tao Chihiro、Jin Hidekatsu、Nakamoto Yusuke
    • Journal Title

      Geophysical Research Letters

      Volume: 47 Pages: -

    • DOI

      10.1029/2020GL087413

    • Peer Reviewed / Open Access
  • [Journal Article] First Global‐Scale Synoptic Imaging of Solar Eclipse Effects in the Thermosphere2020

    • Author(s)
      Aryal Saurav、Evans J. S.、Correira John、Burns Alan G.、Wang Wenbin、Solomon Stanley C.、Laskar Fazlul I.、McClintock William E.、Eastes Richard W.、Dang Tong、Lei Jiuhou、Liu Huixin、Jee Geonhwa
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 125 Pages: -

    • DOI

      10.1029/2020JA027789

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Potential for the measurement of mesosphere and lower thermosphere (MLT) wind, temperature, density and geomagnetic field with Superconducting Submillimeter-Wave Limb-Emission Sounder 2 (SMILES-2)2020

    • Author(s)
      Baron Philippe、Ochiai Satoshi、Dupuy Eric、Larsson Richard、Liu Huixin、Manago Naohiro、Murtagh Donal、Oyama Shin-ichiro、Sagawa Hideo、Saito Akinori、Sakazaki Takatoshi、Shiotani Masato、Suzuki Makoto
    • Journal Title

      Atmospheric Measurement Techniques

      Volume: 13 Pages: 219~237

    • DOI

      10.5194/amt-13-219-2020

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Interhemispheric Transport of the Ionospheric <i>F</i> Region Plasma During the 2009 Sudden Stratosphere Warming2020

    • Author(s)
      Zhang Ruilong、Liu Libo、Liu Huixin、Le Huijun、Chen Yiding、Zhang Hui
    • Journal Title

      Geophysical Research Letters

      Volume: 47 Pages: -

    • DOI

      10.1029/2020GL087078

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ionospheric <i>F</i> Layer Scintillation Weakening as Observed by COSMIC/FORMOSAT‐3 During the Major Sudden Stratospheric Warming in January 20132020

    • Author(s)
      Yu Tao、Ye Hailun、Liu Huixin、Xia Chunliang、Zuo Xiaomin、Yan Xiangxiang、Yang Na、Sun Yangyi、Zhao Biqiang
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 125 Pages: ー

    • DOI

      10.1029/2019JA027721

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] The atmosphere-ionosphere coupling and space weather2021

    • Author(s)
      Huixin Liu
    • Organizer
      German DFG Priority Program symposium
    • Int'l Joint Research / Invited
  • [Presentation] Gravity wave weakening during the 2019 Antarctic stratospheric sudden warming2021

    • Author(s)
      M. Kogure, Huixin Liu
    • Organizer
      Japan Geophysical Union
    • Int'l Joint Research / Invited
  • [Presentation] How does long-term changes in geomagnetic activity regulate the CO2-driven trend in the thermosphere and ionosphere?2021

    • Author(s)
      Huixin Liu
    • Organizer
      IAGA-IAMAS joint meeting
    • Int'l Joint Research / Invited
  • [Presentation] Geomagnetic activity effects on CO2-driven trend in the ionosphere: GAIA experiments2021

    • Author(s)
      Huixin Liu
    • Organizer
      European Geophysical Union
    • Int'l Joint Research / Invited
  • [Presentation] Circulation and tides in a cooler upper atmosphere: dynamical effects of CO2 doubling2021

    • Author(s)
      Huixin Liu
    • Organizer
      COSPAR
    • Int'l Joint Research / Invited

URL: 

Published: 2022-12-28  

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