惑星大気研究会 (WTK)

惑星大気研究会とは

惑星大気研究会 (WTK) は, 惑星大気科学に関するさまざまな話題を議論する場です. 研究会とビデオ会議システムを用いたオンラインセミナーを行っています.

研究会, オンラインセミナーに関するお問い合わせは, 惑星大気研究会運営グループ wtk-staff at gfd-dennou.org までお願いします.

次回研究会, オンラインセミナー, 関係研究集会予定

オンラインセミナー

現在企画中です.

研究会

2017 年 2 月 21 日 (火) - 2 月 24 日(金) 「水惑星・陸惑星」

  • 場所 2/21 国立天文台( 三鷹キャンパス ), 2/23-24 CPS セミナー室 ( 神戸大学統合研究拠点3F )
  • 概要
    • Reading U. の David Ferreira 氏を招聘しての研究会: 午前中は David Ferreira 氏によるセミナー講演, 午後は日本側参加者による講演. 2/21(火) ならびに 2/23(木) は懇親会予定.
  • プログラム
    • 2 月 21 日 (火) "Atmosphers from aqua-planet to exoplanet" @ 国立天文台
      • AM:
        • David Ferreira (Reading U.) "Studying Earth (and other planets) as an aqua-planet"
          • Idealized set-ups offer a great laboratory to explore the most fundamental aspects of climate dynamics. In this lecture, I will describe a series of idealized GFD experiments with a numerical model of the coupled ocean-atmosphere-sea ice system. To focus on the coupling of the two fluids in its most elemental form, we avoid the complication arising from a realistic representation of geography/land-sea distributions. We use Aquaplanet set-ups where narrow continents are absent are reduced to narrow land barriers. Moving land barriers allows, for example, to turn on/off various components of the ocean circulation (gyre, circumpolar current, inter-hemispheric meridional overturning...). I will discuss some of the key findings of these experiments in an Earth-like configurations, as well as applications in an exoplanet context.
      • PM: Tentative program
        • Kensuke Nakajima (Kyushu U.) "Aqua-planet experiment (APE) review"
        • George Hashioto (Okayama U.) "Variaty of thermal structure of earth like planets"
        • Masaki Ishiwatari (Hokkaido U.) "Climate of synchronously rotating planets"
        • Shin-ichi Takehiro (RIMS) "Zonal mean flow of giant planets"
        • H. Kashimura (Kobe U., CPS) and N. Sugimoto? (Keio U.) "Simulation of Venus atmosphere"
        • Takashi Ito (CfA, NAOJ) "Comment: Eccentric Lidov-Kozai effect and planetary orbits"
      • 夕方: 懇親会
    • 2 月 23 日 (木) "Terrestrial Atmosphere and Ocean" @ CPS セミナー室
      • AM:
        • David Ferreira (Reading U.) "The Southern ocean dynamics and its implications for global climate"
          • The Southern Ocean plays a key role in the global climate as a place where bottom water are formed and deep water are returned to the surface. Because of the absence of meridional boundaries, the Southern Ocean is also regulated by a specific dynamics where mesoscale eddies are critical. I will discuss the dynamics of the Southern Ocean, the concept of “eddy-compensation” (the insensitivity of the Southern Ocean to changes in wind) and the limitations of eddy parameterizations used in climate models. I will then describe recent work on the impact of the ozone hole on the Southern ocean and Antarctic sea ice, and connections with climate change.
      • PM: Tentative program
        • Y. Matsumura (Hokkaido U.) "Modeling microscale processes in the ocean"
        • M. Nonaka (JAMSTEC) "Potential predictability of interannual variability in midlatitude Pacific Ocean circulation & Short Introduction of OGCM for Earth Simulator (OFES)"
        • T. Enomoto (Kyoto U.) "Predictability of tropical cyclone tracks: a multi-model multi-analysis approach"
        • TBD (Talks on oceanography and/or convective clouds by AICS People ?)
      • 夕方: 懇親会
    • 2 月 24 日 (金) "Mmodel development" @ CPS セミナー室
      • AM:
        • David Ferreira (Reading U.) "MITgcm capabilities and development"
          • The MITgcm has been designed so as to be extremely flexible, and able to tackle a wide range of geophysical fluid dynamics problems, from small-scale non-hydrostatic turbulence to planetary scale coupled applications. This flexibility is supported by the fact that the model includes much more than a fluid dynamical core, with a representation of sea, ice shelf, carbon cycle, etc and a range of parameterizations. In this lecture, I will review the capabilities of the MITgcm, its specificities, and how it is developed.
      • PM: Tentative Program
        • S. Takehiro (Kyoto U.) Development of hierarchical system of models: GFD Dennou Club and Spmodel: A series of spectral models for GFD and its applications
        • Y. O. Takahashi (Kobe U.) DCPAM: a GCM for planetary atmospheres
        • K. Sugiyama (National Inst. Tech., Matsue College) Deepconv, moist convectio model for planetar atmospheres and moist convection in the giant planets
        • Y. Kawai (Kobe U./AICS) Development of a coupled model for aqua-planet simulations and aqua-planet simulation with zonally symmetric dynamic ocean
        • Y. Sasaki (Kyoto U.) A high resolution simulation of a giant planet
        • S. Nishizawa & H. Tomita (AICS, RIKEN) SCALE-* and CBLEAM

その他

現在企画中です.

過去の研究会資料

過去の研究会, オンラインセミナーの情報, 及び講演資料を公開しています.

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