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DOI | 10.1007/s00382-018-4583-7 |
On the variation of the Pacific center: a revisit to the physical nature of Arctic Oscillation | |
Cheng, Qian; Tan, Benkui | |
2019-07-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:1233-1243 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Based on daily data from NCEP/NCAR reanalysis for 1948/1949-2015/2016 winters (November through March), this study examines the physical nature of the Arctic Oscillation (AO). Results show that the AO events derived from the daily AO index consist basically of two types of eventsthe in-phase (IP) and out-of-phase (OP) events. For IP events, their Pacific and Arctic centers are of same signs, while for OP events, the two centers are of opposite signs, as in the traditional AO pattern. This implies that the AO pattern obtained from the empirical orthogonal function analysis is actually a statistics of these two types of events. It turns out that it is the strong IP and OP events with the Pacific centers of amplitude larger than 1.0 which play a crucial role in shaping the nature (the signs) and strength of the Pacific center. The formation features and roles of these strong IP and OP events in the seasonal and decadal variation and the stratospheric control of the Pacific center of the AO are also investigated. This study also suggests paying attention to strong IP and OP events when making weather prediction for the weather anomalies associated with these two types of events may have big differences in some regions. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471722400075 |
WOS关键词 | ATLANTIC ; STRATOSPHERE ; PROPAGATION ; VARIABILITY ; SIGNATURE ; ANOMALIES ; MODEL |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184360 |
专题 | 气候变化 |
作者单位 | Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | Cheng, Qian,Tan, Benkui. On the variation of the Pacific center: a revisit to the physical nature of Arctic Oscillation[J]. CLIMATE DYNAMICS,2019,53:1233-1243. |
APA | Cheng, Qian,&Tan, Benkui.(2019).On the variation of the Pacific center: a revisit to the physical nature of Arctic Oscillation.CLIMATE DYNAMICS,53,1233-1243. |
MLA | Cheng, Qian,et al."On the variation of the Pacific center: a revisit to the physical nature of Arctic Oscillation".CLIMATE DYNAMICS 53(2019):1233-1243. |
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