Influences of the Pacific Decadal Oscillation on the East Asian Summer Monsoon in non-ENSO years
Influences of the Pacific Decadal Oscillation on the East Asian Summer Monsoon in non-ENSO years
复制标题
非ENSO年份太平洋年代际涛动对东亚夏季风的影响
DOI：
10.1002/asl.634
复制
发表时间：
2016-01-01
影响因子：
3
通讯作者：
Dong, Xiao
中科院分区：
文献类型：
--
作者：
Dong, Xiao
本文研究了非ENSO（ElNino-Southern Oscillation）年太平洋年代际振荡（PDO）的不同位相对东亚夏季风及其降水的影响。与大尺度海表温度和环流变化相关联，中国东部夏季（JJA平均）降水异常呈现三极型，在没有ENSO的情况下，长江流域（华北和华南）降水在PDO正位相中增加（减少）。西太平洋副热带高压在PDO正位相沿着有明显的扩张和向西移现象，其季节变化差异显著。
The impact of different phases of the Pacific Decadal Oscillation (PDO) on East Asia summer monsoon and related precipitation in non-ENSO (El Nino-Southern Oscillation) years is examined in this article. Associated with the large-scale sea surface temperature and circulation change, anomalous summer (JJA mean) precipitation in East China shows tripolar pattern, with increased (decreased) precipitation in the Yangtze-River Valley (North and South China) in positive PDO phase without ENSO. Besides, the western Pacific subtropical high exhibits expansion and westward shift in positive PDO phase along with significantly different sub-seasonal variation.