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投稿时间：2012-03-01 修订日期：2012-12-25
投稿时间：2012-03-01 修订日期：2012-12-25
中文摘要: 应用美国联合台风警报中心(JTWC)提供的热带气旋数据、NCEP再分析资料和英国Hadly中心海表温度资料，分析了年台风累积动能(ACE)异常年气候特征及气候背景。结果表明：年台风累积动能有明显的年际和年代际变化；ACE异常年份由于季风槽东伸的经度、越赤道气流通道和强度以及副热带高压位置的显著差异，造成台风频数、强度和生命史的差异；当5—8月赤道中东太平洋海温为正距平、西南太平洋海温负距平时，通过异常沃克环流和局部哈得来环流的下沉支向西北太平洋输送跨赤道南风，导致该年西北太平洋ACE增多，反之该年ACE减少。
中文关键词: 台风累积动能，台风频数，异常，气候背景
Abstract:Based on JTWC tropical cyclone data, NCEP reanalysis data and Hadly Center SST data, the abnormal year’s climatic features and background for accumulated cyclone energy (ACE) over the Northwest Pacific are analyzed. The results show that ACE has significant interannual and interdecadal variations. In the abnormal years of ACE, due to the notable difference of the longitude that the eastern flow from monsoon trough reaches, the passageway and intensity difference of cross equatorical flows, and the location difference of subtropical high, the frequency, intensity and the persistence of typhoons are different. The abnormality of ACE is closely connected with tropical Pacific SSTA in May-August. When SST anomaly at equatorial central and eastern Pacific is positive and that of Southwest Pacific is negative, as a result of favorable cross equatorical southern flow provided by downflow branches of abnormal Walker and Hadley Circulations, the year’s ACE tends to be positively abnormal. Otherwise, ACE tends to be negatively abnormal.
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基金项目:福建省科技计划重点项目(2011Y0008)、福建省气象局开放式气象科学研究基金项目(2010K05)和国家自然科学基金重大研究计划培育项目(90915002)共同资助
引用文本：
黄丽娜,高建芸,孙健,武锦霖,2013.西北太平洋台风累积动能气候异常特征分析[J].气象,39(8):995-1003.
HUANG Lina,GAO Jianyun,SUN Jian,WU Jinlin,2013.Abnormal Climatic Features of Accumulated Cyclone Energy over the Northwest Pacific[J].Meteor Mon,39(8):995-1003.
黄丽娜,高建芸,孙健,武锦霖,2013.西北太平洋台风累积动能气候异常特征分析[J].气象,39(8):995-1003.
HUANG Lina,GAO Jianyun,SUN Jian,WU Jinlin,2013.Abnormal Climatic Features of Accumulated Cyclone Energy over the Northwest Pacific[J].Meteor Mon,39(8):995-1003.