Structure of Line-Shaped Convective Systems Obliquely Training to the Baiu Front Observed around the Southwest Islands of Japan

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概要

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• This study reveals a structure of line-shaped convective systems (LSCSs) observed around the Southwest Islands of Japan on June 10, 2006 using dual-Doppler analyses obtained from two X-band Doppler radars installed on Shimoji and Tarama Islands. Many LSCSs with lengths ranging from 20km to 40km form in a band-shaped precipitation system with a length exceeding 300km along the Baiu front. The alignment directions of the Baiu front and the LSCSs are west-southwest to east-northeast and south-southwest to north-northeast, respectively. Thus, the alignment direction of the LSCSs is oblique to that of the Baiu front, and is parallel to the vertical wind shear vector between 0.5km and 3km in altitude. These LSCSs consist of several precipitation cells. The precipitation cells generate only to the south of the southern edge of each LSCS, and move northward and decayed at the northern edge. The pre-existing cells in each LSCS hardly affect the successive generation of new cells. The generation area of precipitation cells coincides with low-level convergence along the Baiu front. The successive generation mechanism of new cells in the observed LSCSs and their structure shown in this study correspond to those in a humid environment, suggested in a previous numerical study.

• 社団法人日本気象学会の論文
• 2009-08-25

著者

• UYEDA Hiroshi

  Hydrospheric Atmospheric Research Center, Nagoya University

• TSUBOKI Kazuhisa

  Hydrospheric Atmospheric Research Center, Nagoya University

• Minda Haruya

  Technical Center Of Nagoya Univ. Nagoya Univ.

• Minda Haruya

  Technical Center Of Nagoya University Nagoya University

• SHINODA Taro

  Hydrospheric Atmospheric Research Center, Nagoya University

• Amano Tomohiro

  Hydrospheric Atmospheric Research Center Nagoya University:(present Office)kanazawa Local Meteorolog

• Uyeda Hiroshi

  Hydrospheric Atmospheric Research Center Nagoya University

• Shinoda Taro

  Hydrospheric Atmospheric Research Center Nagoya University

• Tsuboki Kazuhisa

  Hydrospheric Atmospheric Research Center Nagoya University

• Uyeda Hiroshi

  Hydrosphenc Atmospheric Research Center, Nagoya University

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