globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-014-2384-1
Scopus记录号: 2-s2.0-84940654582
论文题名:
Impact of the winter North Atlantic Oscillation (NAO) on the Western Pacific (WP) pattern in the following winter through Arctic sea ice and ENSO: part I—observational evidence
作者: Oshika M.; Tachibana Y.; Nakamura T.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期:2017-05-06
起始页码: 1355
结束页码: 1366
语种: 英语
英文关键词: Arctic sea ice ; ENSO ; Long-term prediction ; NAO ; WP
英文摘要: On the basis of a 51-year statistical analysis of reanalysis data, we propose for the first time that the positive phase of the Western Pacific (WP) pattern in the winter is linked to the negative phase of the North Atlantic Oscillation (NAO) in the previous winter, and vice versa. We show that there are two possible mechanisms responsible for this interannual remote linkage. One is an Arctic mechanism. Extensive Arctic sea ice in the summer after a negative NAO acts as a bridge to the positive phase of the WP in the next winter. The other mechanism involves the tropics. An El Niño occurrence after a negative winter NAO acts as another bridge to the positive phase of the WP in the following winter. The timescale of the Arctic route is nearly decadal, whereas that of the tropical route is about 3–5 years. The tropical mechanism indicates that the NAO remotely excites an El Niño in the second half of the following year. A process perhaps responsible for the El Niño occurrence was investigated statistically. A negative NAO in the winter increases Eurasian snow cover. This anomalous snow cover then intensifies the cold air outbreak from Asia to the western tropical Pacific. This outbreak can intensify the westerly wind burst and excite El Niño in the following year. We suggest that the phase of the NAO in the winter could be a predictor of the WP in the following year. © 2014, The Author(s).
资助项目: MEXT, Ministry of Education, Culture, Sports, Science, and Technology
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54028
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作者单位: Climate and Ecosystems Dynamics Division, Graduate School of Bioresources, Mie University, Tsu, Japan; Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan; Hokkaido University, Sapporo, Japan; National Institute of Polar Research, Tokyo, Japan

Recommended Citation:
Oshika M.,Tachibana Y.,Nakamura T.. Impact of the winter North Atlantic Oscillation (NAO) on the Western Pacific (WP) pattern in the following winter through Arctic sea ice and ENSO: part I—observational evidence[J]. Climate Dynamics,2015-01-01,45(2017-05-06)
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