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Climate of exoplanets with next generation GCM

Research Project

Project/Area Number 21K13975
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 17010:Space and planetary sciences-related
Research InstitutionTokyo Institute of Technology (2023)
The University of Tokyo (2021-2022)

Principal Investigator

Kodama Takanori  東京工業大学, 地球生命研究所, 特任准教授 (80806662)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords雲 / 大気循環 / 系外惑星
Outline of Research at the Start

将来の高精度な系外惑星観測計画に反して、未だ惑星大気の物理・化学過程における理論的な理解は乏しい。本研究課題にて、雲形成と大気組成変化を考慮した3次元大気大循環モデルを構築し、系外惑星大気の特徴を明らかにする。大気循環と雲形成に焦点を当て、地球型惑星からガス惑星までの惑星大気の多様性の位置付けを明らかにし、惑星大気構造における雲の形成と蒸発の効果を定量化する。

Outline of Final Research Achievements

Using an atmospheric general circulation model and a global cloud-resolving model, we quantify the role of clouds in habitable planetary climates. The results show that planets with various obliquities in high-resolution, a global cloud-resolving model with cloud microphysics have warmer and different climate conditions than those in conventional low-resolution climate models with cloud-forming parametrization. This was due to the cloud-resolving models estimating lower cloud coverage and lower planetary albedo. In addition, planetary surface water distribution and habitable conditions were examined using an atmospheric circulation model. Habitable zones were shown to become wider as the surface water distribution area decreases.

Academic Significance and Societal Importance of the Research Achievements

地球型惑星が検出されている系外惑星科学において、本研究課題における気候数値実験はこの時点での最高解像度気候実験であり、将来のハビタブル惑星探査の重要なマイルストーンとなる。また、従来の大気大循環モデルに基づいた我々の理解が、全球雲解像モデルにより展開される本研究結果によって、どの程度信頼できるものであるかという疑問を問いかけた意義は大きい。加えて、地球と異なる環境である地球類似惑星を検討することで、比較惑星科学的に地球を位置付けることができるため、本研究によって開かれた研究展開が期待できる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (31 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (13 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 13 results,  Open Access: 12 results) Presentation (16 results) (of which Int'l Joint Research: 5 results,  Invited: 6 results)

  • [Int'l Joint Research] University of Bordeaux/University of Paris 6(フランス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Bordeaux(フランス)

    • Related Report
      2021 Research-status Report
  • [Journal Article] JASMINE: Near-infrared astrometry and time-series photometry science2024

    • Author(s)
      Kawata Daisuke、Kawahara Hajime、Gouda Naoteru、et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: psae020 Issue: 3 Pages: 1-40

    • DOI

      10.1093/pasj/psae020

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Southern Ocean surface temperatures and cloud biases in climate models connected to the representation of glacial deep ocean circulation2023

    • Author(s)
      Sherriff-Tadano Sam、Abe-Ouchi Ayako、Yoshimori Masakazu、Ohgaito Rumi、Vadsaria Tristan、Chan Wing-Le、Hotta Haruka、Kikuchi Maki、Kodama Takanori、Oka Akira、Suzuki Kentaroh
    • Journal Title

      Journal of Climate

      Volume: 35 Issue: 11 Pages: 1-38

    • DOI

      10.1175/jcli-d-22-0221.1

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The mass of TOI-519 b: A close-in giant planet transiting a metal-rich mid-M dwarf2023

    • Author(s)
      Kagetani Taiki、Narita Norio、Kimura Tadahiro、Hirano Teruyuki、et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 75 Issue: 4 Pages: 713-721

    • DOI

      10.1093/pasj/psad031

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] TOI-1442 b and TOI-2445 b: Two potentially rocky ultra-short period planets around M dwarfs2023

    • Author(s)
      Morello G.、Parviainen H.、Murgas F.、Palle E.、Oshagh M.、Fukui A.、Hirano T.、et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 673 Pages: A32-A32

    • DOI

      10.1051/0004-6361/202243592

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A resonant sextuplet of sub-Neptunes transiting the bright star HD 1100672023

    • Author(s)
      Luque R. et al.
    • Journal Title

      Nature

      Volume: 623 Issue: 7989 Pages: 932-937

    • DOI

      10.1038/s41586-023-06692-3

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Climate of High-obliquity Exoterrestrial Planets with a Three-dimensional Cloud System Resolving Climate Model2022

    • Author(s)
      Kodama Takanori、Takasuka Daisuke、Sherriff-Tadano Sam、Kuroda Takeshi、Miyakawa Tomoki、Abe-Ouchi Ayako、Satoh Masaki
    • Journal Title

      The Astrophysical Journal

      Volume: 940 Issue: 1 Pages: 87-87

    • DOI

      10.3847/1538-4357/ac98ae

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evolution of ice sheets on early Mars with subglacial river systems2022

    • Author(s)
      Kamada A.、Kuroda T.、Kodama T.、Kasaba Y.、Terada N.
    • Journal Title

      Icarus

      Volume: 385 Pages: 115117-115117

    • DOI

      10.1016/j.icarus.2022.115117

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two temperate super-Earths transiting a nearby late-type M dwarf2022

    • Author(s)
      Delrez L.、Murray C. A.、Pozuelos F. J.、Narita N.、Ducrot E.、Timmermans M.、Watanabe N.、Burgasser A. J.、Hirano T.、et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 667 Pages: A59-A59

    • DOI

      10.1051/0004-6361/202244041

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] TOI-1468: A system of two transiting planets, a super-Earth and a mini-Neptune, on opposite sides of the radius valley2022

    • Author(s)
      Chaturvedi P.、...、 Kodama T.(39)、and co-authors
    • Journal Title

      Astronomy & Astrophysics

      Volume: 666 Pages: A155-A155

    • DOI

      10.1051/0004-6361/202244056

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs2022

    • Author(s)
      Esparza-Borges E.、Parviainen H.、Murgas F.、Pall? E.、Maas A.、Morello G.、Zapatero-Osorio M. R.、Barkaoui K.、Narita N.、Fukui A.、Casasayas-Barris N.、Oshagh M.、Crouzet N.、Gal?n D.、Fern?ndez G. E.、Kagetani T.、Kawauchi K.、Kodama T.、and co-authors
    • Journal Title

      Astronomy & Astrophysics

      Volume: 666 Pages: A10-A10

    • DOI

      10.1051/0004-6361/202243731

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Validation and atmospheric exploration of the sub-Neptune TOI-2136b around a nearby M3 dwarf2022

    • Author(s)
      Kawauchi K.、Murgas F.、Palle E.、Narita N.、Fukui A.、Hirano T.、et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 666 Pages: A4-A4

    • DOI

      10.1051/0004-6361/202243381

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf2022

    • Author(s)
      Cadieux Charles、Doyon Rene、Plotnykov Mykhaylo、Hebrard Guillaume、Jahandar Farbod、Artigau Etienne、Valencia Diana、Cook Neil J.、Martioli Eder、Vandal Thomas、Donati Jean-Francois、Cloutier Ryan、Narita Norio、Fukui Akihiko、Hirano Teruyuki、et al.
    • Journal Title

      The Astronomical Journal

      Volume: 164 Issue: 3 Pages: 96-96

    • DOI

      10.3847/1538-3881/ac7cea

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Onset of a Globally Ice‐Covered State for a Land Planet2021

    • Author(s)
      Kodama T.、Genda H.、Leconte J.、Abe‐Ouchi A.
    • Journal Title

      Journal of Geophysical Research: Planets

      Volume: 126 Issue: 12

    • DOI

      10.1029/2021je006975

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Climate of rocky planets2023

    • Author(s)
      Takanori Kodama
    • Organizer
      ExoClimes VI
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Atmosphere and Habitability for Exo-Terrestrial Planets2023

    • Author(s)
      小玉貴則
    • Organizer
      JASMINE Consortium
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 潮汐固定地球型惑星のハビタビリティ2023

    • Author(s)
      小玉貴則
    • Organizer
      新学術領域『星惑星形成』2023年度大研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] M型星周りにおけるハビタブルゾーン内側境界2023

    • Author(s)
      小玉貴則
    • Organizer
      日本天文学会2023年春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Climate for habitable exoplanets2023

    • Author(s)
      Takanori Kodama
    • Organizer
      JpGU2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 表面水分布を考慮したTRAPPIST-1dとeの気候2023

    • Author(s)
      小玉貴則
    • Organizer
      日本惑星科学会2023年度秋季講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 2030年代の戦略的中型をどうするか?2022

    • Author(s)
      小玉貴則
    • Organizer
      光赤外天連シンポジウム
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Climate of high obliquity terrestrial planets with 3D cloud resolving model2022

    • Author(s)
      Takanori Kodama, Daisuke Takasuka, Sam Sheriff-Tadano, Takeshi Kuroda, Tomoki Miyakawa, Ayako Abe-Ouchi, Masaki Satoh
    • Organizer
      Forming and Exploring Habitable Worlds Meeting 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Climate of high obliquity exo-terrestrial planets with 3D cloud resolving climate model2022

    • Author(s)
      Takanori Kodama, Daisuke Takasuka, Sam Sheriff-Tadano, Takeshi Kuroda, Tomoki Miyakawa, Ayako Abe-Ouchi, Masaki Satoh
    • Organizer
      JpGU 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 全球雲解像モデルを用いた高自転軸傾斜角を持った系外地球型惑星の気候2022

    • Author(s)
      小玉 貴則, 高須賀 大輔, シェリフ多田野 サム, 黒田 剛史, 宮川 知己, 阿部 彩子, 佐藤 正樹
    • Organizer
      日本惑星科学会 秋季講演会 2022
    • Related Report
      2022 Research-status Report
  • [Presentation] 潮汐固定された系外地球型惑星の気候と表面水分布の関係2022

    • Author(s)
      小玉 貴則
    • Organizer
      日本天文学会2022年秋季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 系外惑星・生命探査2022

    • Author(s)
      小玉貴則
    • Organizer
      光赤外天連シンポジウム:2030年代の戦略的中型をどうするのか
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] How do we understand habitable climates on exoplanets?2021

    • Author(s)
      Takanori Kodama
    • Organizer
      JpGU
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ハビタブル惑星はどこまで理解されてきたか?2021

    • Author(s)
      小玉貴則
    • Organizer
      CPS/ABCワークショップ
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 暴走温室限界の自転軸傾斜角, 軌道離心率, 自転角速度依存性2021

    • Author(s)
      小玉貴則, 門屋辰太郎, 玄田英典, 石渡正樹
    • Organizer
      日本惑星科学会 秋季講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Climate for exo-terrestrial planets with 3D high resolution cloud resolved model: Effect of obliquity2021

    • Author(s)
      Takanori Kodama, Daisuke Takasuka, Takeshi Kuroda, Tomoki Miyakawa, Masaki Satoh
    • Organizer
      JpGU
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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