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近60年西北太平洋台风年代际变化特征及成因的初步分析

余帆 李培 李向军 张涛

海洋预报2012,Vol.29Issue(1):1-5,5.
海洋预报2012,Vol.29Issue(1):1-5,5.

近60年西北太平洋台风年代际变化特征及成因的初步分析

Preliminary analysis on interdecadal variation characteristics of typhoon over the Northwestern Pacific in the past sixty years

余帆 1李培 1李向军 1张涛1

作者信息

  • 1. 海军海洋水文气象中心,北京100161
  • 折叠

摘要

Abstract

Using typhoon data over the Northwestern Pacific (NWP) in 60 years (1950-2009), the interdecadal variations of typhoon frequency, track and intensity are statistically analyzed. The results show that the frequency of typhoon over the NWP is high in 1960s and low in 1970s. From the late 1990s, the frequency is low again. The track of typhoon is mainly shifting, the average track is at the southern NWP in 1960s and 1970s, but in recent 10 years, the track is at the northern NWP. The intensity of typhoon is strong in 1950s and 1960s, but becomes weak in recent 25 years. In high frequency periods of typhoon, the subtropical high of NWP is weak and its position appears easternly. The distribution of Sea Surface Temperature (SST) shows characteristics of "La Nina" event. In low frequency periods of typhoon, the subtropical high of NWP is strong and and its position appears westeraly. The distribution of SST shows characteristics of "El Nino" event.

关键词

西北太平洋台风/频数/路径/强度/年代际

Key words

typhoon over the NWP/frequency/track/intensity/interdecadal variation characteristics

分类

天文与地球科学

引用本文复制引用

余帆,李培,李向军,张涛..近60年西北太平洋台风年代际变化特征及成因的初步分析[J].海洋预报,2012,29(1):1-5,5.

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