20-km-Mesh Global Climate Simulations Using JMA-GSM Model : Mean Climate States

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概要

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• A global atmospheric general circulation model, with the horizontal grid size of about 20km, has been developed, making use of the Earth Simulator, the fastest computer available at present for meteorological applications. We examine the model's performance of simulating the present-day climate from small scale through global scale by time integrations of over 10 years, using a climatological sea surface temperature. Global distributions of the seasonal mean precipitation, surface air temperature, geopotential height, zonal-mean wind and zonal-mean temperature agree well with the observations, except for an excessive amount of global precipitation, and warm bias in the tropical upper troposphere. This model improves the representation of regional-scale phenomena and local climate, by increasing horizontal resolution due to better representation of topographical effects and physical processes, with keeping the quality of representation of global climate. The model thus enables us to study global characteristics of small-scale phenomena and extreme events in unprecedented detail.

• 社団法人日本気象学会の論文
• 2006-02-27

著者

• Hosaka Masahiro

  Meteorological Research Institute

• Kusunoki Shoji

  Meteorological Research Institute

• OOUCHI Kazuyoshi

  Advanced Earth Science and Technology Organization

• YOSHIMURA Hiromasa

  Meteorological Research Institute

• MIZUTA Ryo

  Advanced Earth Science and Technology Organization

• NODA Akira

  Meteorological Research Institute

• Noda Akira

  Frontier Res. Center For Global Change Japan Agency For Marine-earth Sci. And Technol. Yokohama Jpn

• YUKIMOTO Seiji

  Meteorological Research Institute

• KATAYAMA Keiichi

  Japan Meteorological Agency

• KAWAI Hideaki

  Japan Meteorological Agency

• NAKAGAWA Masayuki

  Japan Meteorological Agency

• Yukimoto Seiji

  Meteorological Res. Inst.

• Oouchi Kazuyoshi

  Frontier Res. Center For Global Change Japan Agency For Marine-earth Sci. And Technol.

• Nakagawa Masayuki

  Japan Atomic Energy Research Institute

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