| 华南秋季降水异常年的台风活动差异及其与海温的关系 |
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| 引用本文： | 贾子冰,武亮,王同美,温之平.华南秋季降水异常年的台风活动差异及其与海温的关系[J].海洋学报,2015,37(1):53-62. |
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| 作者姓名： | 贾子冰 武亮 王同美 温之平 |
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| 作者单位： | 1.中山大学 季风与环境研究中心/大气科学系, 广东 广州 510275;广东省气象科技服务中心, 广东 广州 510080 |
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| 基金项目： | 国家海洋局海洋-大气化学与全球变化重点实验室开放基金课题(GCMAC1101);国家重点基础研究发展规划项目(2014CB953900);国家自然科学基金项目(41175076,41205052,41475077,41461164005);中央高校基本业务费。 |
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| 摘 要： | 本文通过对1965—2005年华南地区降水和台风的观测资料分析,初步探讨了华南秋季降水与台风活动的关系,结果表明秋季华南台风活动偏少是造成秋季降水减少的重要原因之一。进一步研究表明,秋季海温对于影响华南秋季的台风活动(强度和路径)具有重要作用,从而对华南秋季降水产生影响:当赤道中东太平洋海表增(降)温,影响华南台风活动减少(增多)以致秋季少(多)雨。这种影响很可能是通过华南中低层纬向风的异常来实现的,即当赤道中东太平洋海温降低(增加)时,华南中低层风场偏东风异常增大(减小),从而容易(不易)引导台风西行影响华南而使华南降水增多(减少)。
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| 关 键 词： | 华南秋季降水 台风 海表温度 中低层纬向风 |
| 收稿时间： | 2014/1/29 0:00:00 |
| 修稿时间： | 2014/6/29 0:00:00 |
Relationship between autumn rainfall anomalies in South China and typhoons activity, and the anomalous sea surface temperature characteristics |
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| Jia Zibing,Wu Liang,Wang Tongmei and Wen Zhiping.Relationship between autumn rainfall anomalies in South China and typhoons activity, and the anomalous sea surface temperature characteristics[J].Acta Oceanologica Sinica (in Chinese),2015,37(1):53-62. |
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| Authors: | Jia Zibing Wu Liang Wang Tongmei and Wen Zhiping |
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| Institution: | Research Center for Monsoon and Environment/Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China;Guangdong Service Centre for Meteorological Science and Technology, Guangzhou 510080, China,Research Center for Monsoon and Environment/Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China;Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100190, China,Research Center for Monsoon and Environment/Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China and Research Center for Monsoon and Environment/Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China |
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| Abstract: | The observed relationship between autumn rainfall anomalies in the South China (SC) region and the typhoons activity, and the anomalous sea surface temperature characteristics has been examined using 41 a of the precipitation data of 168 stations in SC, NCEP-NCAR reanalysis, and best track tropical cyclone data. To a great extend, the abnormal of autumn precipitation in SC is determined by the Typhoons activity. When the SSTA (sea surface temperature anomaly) in eastern equatorial Pacific is negative (positive), the areas including the western tropical Pacific to South China Sea and the SC are dominated by anomalous eastern(western) wind, which is favorable (not favorable) for typhoons on western Pacific moving westward and for the increasing(decreasing) of TIF index. This will lead to the increasing (reducing) typhoons numbers that influence SC and result in more autumn precipitation than average in SC. |
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| Keywords: | autumn rainfall in the South China typhoons SST zonal wind in middle and low troposphere |
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