| 一个"移径北翘台风"的环流及结构特征 |
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| 引用本文： | 吴德平,梁冰.一个"移径北翘台风"的环流及结构特征[J].广东气象,2005(3):7-8,13. |
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| 作者姓名： | 吴德平 梁冰 |
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| 作者单位： | 湛江市气象局,广东湛江,524001;湛江市气象局,广东湛江,524001 |
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| 摘 要： | 0307号台风“伊布都”进入南海后一度西北偏西方向移动,但登陆前12h,移向突然折向西北,特别是登陆前3h移径明显北翘,直向偏北方向移动。通过分析大气环流形势、卫星云图以及雷达探测资料,发现副高轴“东落西抬”、副高减弱以及台风“9”字型螺旋结构改变均对台风的北翘有很好的指示作用。另外,副高控制下的“晴空区”有零星对流云发生,也对副高的减弱有很好的预示作用。
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| 关 键 词： | 台风(伊布都) 环流结构特征 分析 |
| 文章编号： | 1007-6190（2005）03-0007-02 |
| 收稿时间： | 2005-03-03 |
| 修稿时间： | 2005年3月3日 |
The General Circulation and Structural Characteristics of a Typhoon with an Abrupt North Shift |
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| Wu Deping,Liang Bing.The General Circulation and Structural Characteristics of a Typhoon with an Abrupt North Shift[J].Journal of Guangdong Meteorology,2005(3):7-8,13. |
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| Authors: | Wu Deping Liang Bing |
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| Abstract: | Typhoon "IMBUDO" once moved on a steady west-to-northwest track after entering South China Sea, but made an abrupt turn to the northwest, 12 hours before landfall, then further turned to the north, 3 hours before landfall. By analyzing the general circulation, satellite image and radar data, some indicators for such event are presented: clockwise rotation of subtropical-high axis, weakening of subtropical high and changes to the digit-9-shaped spiral structure of typhoon. And, besides, scatter convections in the clear-sky area dominated by subtropical high might imply the weakening of subtropical high. |
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| Keywords: | Typhoon (IMBUDO) Structural Characteristics of General Circulation Analysis |
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