Dynamics of Large-Scale Disturbance Producing Abnormal Weather Situations.

造成异常天气情况的大规模扰动的动态。

• 批准号: 07454110
• 负责人: MATSUDA Yoshihisa
• 金额: $ 4.99万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07454110/
• 关键词: abnormal weather situations; large-scale disturbance; Rossby wave; blocking; El-nino; Okhotsk sea ridge; meridional circulation; angular-momentum balance; ロスピー波; 梅雨前線; 移動性高低気圧; 気象力学; 熱帯加熱

The problem of dynamics of abnormal weather is complicated and has various aspects. In the present study, this problem is treated in the light of the behavior of Rossby wave in extratropics, 40 day oscillation in the tropics and the interaction between the tropics and extratropics. Each part of the investigation is made in corperation.Nakamura and his collaborator have succeeded in the formulation of the activity flux associated with 3-dimensional propagation in the zonally-varying basic flows. This new formulation is applied to various cases of blocking phenomena.Matsuda and his collaborator have studied the propagation of Rossby wave in the zonally-varying basic flow by the numerical experiments. The barotropic model on the sphere is used in the experiments. The amplification of Rossby wave in the jet exit region is shown.Takahashi and his collaborator have made data analysis of 40 day oscillation in the tropics in connection with year to year variation.Satoh and his collaborator have investigated an interaction between the tropical circulation and mid-latitude one from the aspect of meridional circulation and angular momentum transport.

异常天气的动力学问题是一个复杂的、多方面的问题。本文从Rossby波在热带外的行为、热带40天振荡以及热带与热带外的相互作用等方面讨论了这一问题。中村和他的合作者已经成功地建立了与带状变化基流中三维传播有关的活动通量公式。Matsuda和他的合作者通过数值实验研究了Rossby波在带状变化基流中的传播。实验中采用了正压球上模式。Takahashi等人对热带40天振荡的年际变化进行了分析，Satoh等人从纬向环流和角动量输送的角度研究了热带环流与中纬度环流的相互作用，并对中纬度环流与热带环流的相互作用进行了分析。

项目成果

M. Takahasi: "Simulation of the Stratospheric Quasi-Biennial Oscillation Using a General Circulation Model" Geophysical Research Letters. 23 (6). 661-664 (1996)

M. Takahasi：“使用大气环流模型模拟平流层准两年一次的振荡”地球物理研究快报。

Masaaki Takahashi and Toshiro Kumakura: "Equatorial wave behavior in a three-dimensional sector model" Journal of the meteorological Society of Japan. 73・6. 1011-1027 (1995)

Masaaki Takahashi 和 Toshiro Kumakura：“三维扇形模型中的赤道波行为”日本气象学会杂志 73・6（1995 年）。

Y.Matsuda 他2名: "Rossby Wave Propagation in Idealized and Realistic Zonally Varying Flows" Journal of the Meteorological Society of Japan. 75 (3). 687-700 (1997)

Y.Matsuda 等 2 人：“理想化和现实的纬向变化流中的罗斯比波传播”日本气象学会杂志 75 (3) 687-700 (1997)。

H.Nakamura: "Year-to-Year and Interdecadal Variability in the Activity of Intraseasonal Fluctuations in the Northern Hemisphere Wintertime Circulation." Theoretical and Applied Climatology. 55 (special issue). 19-32 (1996)

H.Nakamura：“北半球冬季环流季节内波动活动的逐年和年代际变化。”

M.Takahashi, N.Zhao and T.Kumakura: "Equatorial Waves in a General Circulation Model Simulating a Quasi-Biennial-Oscillation." Journal of the Meteorological Society of Japan. 75 (2). 529-540 (1997)

M.Takahashi、N.Zhao 和 T.Kumakura：“模拟准两年振荡的大气环流模型中的赤道波”。