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首页> 外文会议>International Chinese Ocean-Atmosphere Conference: Abstracts >Connection of Summer Rainfall Variations in South and East Asia:Dependences on ENSO and Time Scales
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Connection of Summer Rainfall Variations in South and East Asia:Dependences on ENSO and Time Scales

机译：南亚和东亚夏季降水变化的联系：对ENSO和时间尺度的依赖

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摘要

In this study, we have investigated the role of ENSO on the connection between summer rainfall variations in South and East Asia on interannual and interdecadal time scales by separating an Indian summer monsoon rainfall index into two parts: one part ENSO -related and the other ENSO-unrelated. On from interannual time scales, the ENSO-related part is significantly positively (negatively ) correlated with the rainfall variations in northern China (southern Japan). The ENSO-unrelated part has significant negative correlations with the rainfall variations in southwest China. The occurrence of ENSO generally reinforces the connection between the South Asian summer monsoon and East Asian summer rainfall variations. The ENSO-related part affects East Asian summer rainfall variations on interannual time scales through two meridional propagation teleconnection patterns: one over the East Asian continent and the other over the western Pacific Ocean. The ENSO-unrelated part connects with East Asian rainfall variations by a zonal propagation pattern over mid-latitudes in the Asian continent. The location of the significant positive correlation in northern China is shifted eastward from interannual time scales to interdecadal time scales.
机译：在这项研究中，我们通过将印度夏季风降水指数分为两部分，研究了ENSO在南亚和东亚夏季降水变化在年际和年代际时间尺度之间的联系上的作用：一部分与ENSO相关，而另一部分与ENSO相关-无关。从年际尺度来看，与ENSO相关的部分与中国北方（日本南部）的降雨变化呈显着正相关（负相关）。与ENSO无关的部分与中国西南地区的降雨变化具有显着的负相关。 ENSO的出现通常加强了南亚夏季风和东亚夏季降水变化之间的联系。与ENSO相关的部分通过两种经向传播遥相关模式影响东亚夏季降雨量在年际尺度上的变化：一种在东亚大陆上，另一种在西太平洋上。与ENSO无关的部分通过亚洲大陆中纬度上的纬向传播模式与东亚降雨变化联系在一起。中国北方显着正相关的位置从年际时标向东转移到年代际时标。

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  • 来源
  • 会议地点 Beijing(CN)
  • 作者

    Zeng-Zhen Hu; Renguang Wu; James L. Kinter; Song Yang;

  • 作者单位

    Center for Ocean-Land-Atmosphere Studies 4041 Powder Mill Rd.,Suite 302,Calverton,MD 20705,USA;

    Center for Ocean-Land-Atmosphere Studies 4041 Powder Mill Rd.,Suite 302,Calverton,MD 20705,USA;

    Center for Ocean-Land-Atmosphere Studies 4041 Powder Mill Rd.,Suite 302,Calverton,MD 20705,USA;

    Climate Prediction Center,NCEP/NWS/NOAA 5200 Auth Road,Camp Springs,MD 20746,USA;

    Climate Prediction Center,NCEP/NWS/NOAA 5200 Auth Road,Camp Springs,MD 20746,USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 大气科学（气象学）;海洋学;
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