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A Double-Index Method to Classify Kuroshio Intrusion Paths in the Luzon Strait

机译:吕宋海峡黑潮入侵路径分类的双指标方法

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摘要

A double index(DI), which is made up of two sub-indices, is proposed to describe the spatial patterns of the Kuroshio intrusion and mesoscale eddies west to the Luzon Strait, based on satellite altimeter data. The area-integrated negative and positive geostrophic vorticities are defined as the Kuroshio warm eddy index(KWI) and the Kuroshio cold eddy index(KCI),respectively. Three typical spatial patterns are identified by the DI: the Kuroshio warm eddy path(KWEP), the Kuroshio cold eddy path(KCEP), and the leaking path. The primary features of the DI and three patterns are further investigated and compared with previous indices. The effects of the integrated area and the algorithm of the integration are investigated in detail. In general, the DI can overcome the problem of previously used indices in which the positive and negative geostrophic vorticities cancel each other out. Thus, the proportions of missing and misjudged events are greatly reduced using the DI.The DI, as compared with previously used indices, can better distinguish the paths of the Kuroshio intrusion and can be used for further research.

著录项

  • 来源
    《大气科学进展(英文版)》 |2016年第6期|715-729|共15页
  • 作者单位

    State Key Laboratory of Marine Environmental Science,College of Ocean and Earth Sciences,Xiamen University,Xiamen 361102;

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029;

    State Key Laboratory of Marine Environmental Science,College of Ocean and Earth Sciences,Xiamen University,Xiamen 361102;

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029;

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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  • 入库时间 2022-08-19 03:55:48
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