| DOI: | 10.1007/s00382-012-1416-y
|
| Scopus记录号: | 2-s2.0-84868140982
|
| 论文题名: | A tripolar pattern as an internal mode of the East Asian summer monsoon |
| 作者: | Hirota N.; Takahashi M.
|
| 刊名: | Climate Dynamics
|
| ISSN: | 9307575
|
| 出版年: | 2012
|
| 卷: | 39, 期:2017-09-10 | | 起始页码: | 2219
|
| 结束页码: | 2238
|
| 语种: | 英语
|
| 英文关键词: | A linear model
; Climate variability
; Monsoon
|
| 英文摘要: | A tripolar anomaly pattern with centers located around the Philippines, China/Japan, and East Siberia dominantly appears in climate variations of the East Asian summer monsoon. In this study, we extracted this pattern as the first mode of a singular value decomposition (SVD1) over East Asia. The squared covariance fraction of SVD1 was 59 %, indicating that this pattern can be considered a dominant pattern of climate variations. Moreover, the results of numerical experiments suggested that the structure is also a dominant pattern of linear responses, even if external forcing is distributed homogeneously over the Northern Hemisphere. Thus, the tripolar pattern can be considered an internal mode that is characterized by the internal atmospheric processes. In this pattern, the moist processes strengthen the circulation anomalies, the dynamical energy conversion supplies energy to the anomalies, and the Rossby waves propagate northward in the lower troposphere and southeastward in the upper troposphere. These processes are favorable for the pattern to have large amplitude and to influence a large area. © 2012 The Author(s). |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/55108
|
| Appears in Collections: | 过去全球变化的重建
|
|
There are no files associated with this item.
|
|
作者单位: | Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8568, Japan
|
| Recommended Citation: | |
Hirota N.,Takahashi M.. A tripolar pattern as an internal mode of the East Asian summer monsoon[J]. Climate Dynamics,2012-01-01,39(2017-09-10)
|
|
|