Interdecadal variation of tropical cyclone activity in association with summer monsoon, sea surface temperature over the western North Pacific
Interdecadal variation of tropical cyclone activity in association with summer monsoon, sea surface temperature over the western North Pacific
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DOI：
10.1007/s11434-008-0564-2
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发表时间：
2009-01
影响因子：
--
通讯作者：
Guanghua Chen
中科院分区：
文献类型：
--
作者：
Guanghua Chen
本文在西北太平洋（WNP）地理区划的基础上，分析了夏季风、海表温度（SST）与热带气旋活动（包括数量、路径和强度）的年代际关系。在过去的几十年中，西太平洋副热带高压和热带西风分别对西北和东南部热带气旋的年代际变化有贡献。从西太平洋副高诱导的转向流和生成位置来看，菲律宾以东的TC发生密度增加与TC路径有关，出现在20世纪90年代。从年代际角度来看，用平均气旋累积能量衡量的TC强度变化趋势与SST变化趋势一致，表明SST对TC强度起着重要作用。
Based on geographic division over the western North Pacific (WNP), the interdecadal relationships between summer monsoon, sea surface temperature (SST) and tropical cyclones activity (including number, track and intensity) are examined. In the past several decades, the western Pacific subtropical high (WPSH) and tropical westerlies contribute to the interdecadal variation of TC number in the northwest and southeast of WNP respectively. The increased TC occurrence density to the east of Philippines related to TC track appears during the 1990s, in terms of both steer flow induced by WPSH and genesis location. From the interdecadal viewpoint, the tendency of TC intensity, measured by averaged accumulated cyclone energy, does well agree with that of SST, implying that SST plays an important role in TC intensity.