| 2000-2008年西北太平洋热带扰动的时空分布特征 |
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| 引用本文： | 张超,张庆红.2000-2008年西北太平洋热带扰动的时空分布特征[J].北京大学学报(自然科学版),2011(2):278-286. |
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| 作者姓名： | 张超 张庆红 |
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| 作者单位： | 北京大学物理学院大气与海洋科学系; |
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| 基金项目： | 国家重点基础研究发展计划(2009CB421500); 国家自然科学基金(40975059,40921160380)资助 |
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| 摘 要： | 利用热带气旋预警资料(WX-TROPL),统计了2000-2008年西北太平洋热带扰动的频数和时空分布,发现2000-2008年西北太平洋共生成热带扰动596个,有456个集中在夏半年(5-10月),并在8月份达到峰值(年均11.6个).全年热带扰动生成于季风槽内的有369个.热带扰动的平均发展率为43.8%,其中在8...
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| 关 键 词： | 热带扰动 频数 季风槽 低层涡度 潜热释放 |
Spatial Temporal Characteristics of Tropical Disturbances over the Northwestern Pacific during 2000-2008 |
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| ZHANG Chao,ZHANG Qinghong.Spatial Temporal Characteristics of Tropical Disturbances over the Northwestern Pacific during 2000-2008[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2011(2):278-286. |
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| Authors: | ZHANG Chao ZHANG Qinghong |
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| Institution: | Department of Atmospheric and Oceanic Sciences,School of Physics,Peking University,Beijing 100871; |
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| Abstract: | Based on the Tropical Storm and Hurricane WX products (WX-TROPL),596 tropical disturbances generated over the Northwestern Pacific during 2000-2008 are analyzed,456 of which occur in summer half year (May to October).The frequency peaks in August (11. 6 per year in average). There are 369 disturbances generated in the monsoon trough.The average development rate of disturbances is 43. 8% ,while the peak value 54. 8% appears in August,and the neapvalue 20% appears in February. The ENSO3. 4 index at the end of... |
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| Keywords: | tropical disturbances frequency monsoon trough vorticity at lower level the latent heat release |
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