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| The 30–60-day Intraseasonal Oscillations over the Subtropical Western North Pacific during the Summer of 1998简 | |
| 作者姓名： | LU Riyu DONG Huilin SU Qin Hui DING |
| 基金项目： | supported by the National Basic Research Program of China(Grant No2010CB950403);by the National Natural Science Foundation of China(Grant No.U0933603) |
| 摘 要： | The features of 30-60-day convection oscillations over the subtropical western North Pacific （WNP） were investigated, along with the degree of tropical-subtropical linkage between the oscillations over the WNP during summer 1998. It was found that 30-60-day oscillations were extremely strong in that summer over both the subtropical and tro]~ical WNP, providing a unique opportunity to study the behavior of subtropical oscillations and their relationship to tropical oscillations. Further analyses indicated that 30-60-day oscillations propagate westwards over the subtropical WNP and reach eastern China. In addition, 30-60-day oscillations in the subtropics are affected by those over the South China Sea （SCS） and tropical WNP through two mechanisms： （1） direct propagation from the tropics into the subtropics; and （2） a seesaw pattern between the tropics and subtropics, with the latter being predominant. |
| 关 键 词： | 季节内振荡 西北太平洋 副热带 夏天 亚热带地区 中国东部 中国南海 交互模式 |
The 30–60-day intraseasonal oscillations over the subtropical western North Pacific during the summer of 1998 |
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| LU Riyu,DONG Huilin,SU Qin,Hui DING.The 30–60-day intraseasonal oscillations over the subtropical western North Pacific during the summer of 1998[J].Advances in Atmospheric Sciences,2014,31(1):1-7. | |
| Authors: | Riyu Lu Huilin Dong Qin Su Hui Ding |
| Institution: | 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China 2. University of the Chinese Academy of Sciences, Beijing, 100049, China 3. Helmholtz Centre for Ocean Research Kiel and Kiel University, Kiel, 24148, Germany |
| Abstract: | The features of 30–60-day convection oscillations over the subtropical western North Pacific (WNP) were investigated, along with the degree of tropical-subtropical linkage between the oscillations over the WNP during summer 1998. It was found that 30–60-day oscillations were extremely strong in that summer over both the subtropical and tropical WNP, providing a unique opportunity to study the behavior of subtropical oscillations and their relationship to tropical oscillations. Further analyses indicated that 30–60-day oscillations propagate westwards over the subtropical WNP and reach eastern China. In addition, 30–60-day oscillations in the subtropics are affected by those over the South China Sea (SCS) and tropical WNP through two mechanisms: (1) direct propagation from the tropics into the subtropics; and (2) a seesaw pattern between the tropics and subtropics, with the latter being predominant. |
| Keywords: | intraseasonal oscillation convection western North Pacific tropical-extratropical interaction |
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