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DOI | 10.1002/joc.5831 |
Inter-decadal change of the spring North Atlantic Oscillation impact on the summer Pamir-Tienshan snow cover | |
Wu, Junjie1; Wu, Zhiwei2,3 | |
2019-02-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
卷号 | 39期号:2页码:629-642 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Known as the water tower of central Asia and a crucial component of the Tibetan Plateau (TP), the Pamir-Tienshan snow cover (PTSC) exerts profound impacts on regional and global climate extremes during summer. However, researches on origins of the summer PTSC variability have not attracted adequate attention. In recent works, the spring North Atlantic Oscillation (NAO) has been shown to prolong its influence through the North Atlantic tri-pole sea surface temperature anomalies (Tri-SSTAs) and affect remote Asian climate in the subsequent summer. The present study discovers that the spring NAO has a significant positive correlation with the summer PTSC in the period 1967-1981, but such connection weakens after 1981. The North Atlantic Tri-SSTAs induced by the spring NAO during these two epochs can both persist into ensuing summer but excite significantly different downstream atmospheric teleconnections. The Rossby wave train triggered by positive (or negative) Tri-SSTAs during the 1967-1981 period exhibits an anomalous cyclonic (or anticyclonic) centre over the Pamir-Tienshan region, favouring an excessive (or reduced) PTSC. By contrast, such atmospheric anomaly centre is not evident during the 1982-2014 period. Numerical experiments suggest that westwards shift of the spring NAO northern centre can modulate the Tri-SSTA pattern via the wind-evaporation-SST feedback, which could further result in the displacement of the atmospheric anomaly centres in the Rossby wave train in summer. Therefore, such change in the spring NAO itself is responsible for the inter-decadal change of the spring NAO impact on the summer PTSC. |
英文关键词 | inter-decadal change spring North Atlantic Oscillation summer Pamir-Tienshan snow cover |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459665000004 |
WOS关键词 | TIBETAN PLATEAU ; EXTRATROPICAL CIRCULATION ; MONSOON RAINFALL ; ATMOSPHERIC CIRCULATION ; ASIAN MONSOON ; ANNULAR MODES ; SOUTH-ASIA ; PART II ; VARIABILITY ; ENSO |
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/37542 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Nanjing, Jiangsu, Peoples R China; 2.Fudan Univ, Dept Atmospher & Ocean Sci, Shanghai, Peoples R China; 3.Fudan Univ, Inst Atmospher Sci, Shanghai 200433, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Junjie,Wu, Zhiwei. Inter-decadal change of the spring North Atlantic Oscillation impact on the summer Pamir-Tienshan snow cover[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019,39(2):629-642. |
APA | Wu, Junjie,&Wu, Zhiwei.(2019).Inter-decadal change of the spring North Atlantic Oscillation impact on the summer Pamir-Tienshan snow cover.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(2),629-642. |
MLA | Wu, Junjie,et al."Inter-decadal change of the spring North Atlantic Oscillation impact on the summer Pamir-Tienshan snow cover".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.2(2019):629-642. |
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