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DOI | 10.1007/s00382-016-3282-5 |
Relationship of boreal summer 10-20-day and 30-60-day intraseasonal oscillation intensity over the tropical western North Pacific to tropical Indo-Pacific SST | |
Wu, Renguang1,2; Cao, Xi1 | |
2017-06-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 48期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The present study contrasts interannual variations in the intensity of boreal summer 10-20-day and 30-60-day intraseasonal oscillations (ISOs) over the tropical western North Pacific and their factors. A pronounced difference is found in the relationship of the two ISOs to El Nio-Southern Oscillation. The 10-20-day ISO intensity is enhanced during El Nio developing summer, whereas the 30-60-day ISO intensity is enhanced during La Nia decaying summer. The above different relationship is interpreted as follows. The equatorial central and eastern Pacific SST anomalies modify vertical wind shear, lower-level moisture, and vertical motion in a southeast-northwest oriented band from the equatorial western Pacific to the tropical western North Pacific where the 10-20-day ISOs originate and propagate. These background field changes modulate the amplitude of 10-20-day ISOs. Preceding equatorial central and eastern Pacific SST anomalies induce SST anomalies in the North Indian Ocean in summer, which in turn modify vertical wind shear and vertical motion over the tropical western North Pacific. The modified background fields influence the amplitude of the 30-60-day ISOs when they reach the tropical western North Pacific from the equatorial region. A feedback of ISO intensity on local SST change is identified in the tropical western North Pacific likely due to a net effect of ISOs on surface heat flux anomalies. This feedback is more prominent from the 10-20-day than the 30-60-day ISO intensity change. |
英文关键词 | ISO intensity variations 10-20-Day and 30-60-day ISOs ENSO The North Indian Ocean SST Feedback of ISO intensity on SST |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402122200005 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; SOUTH CHINA SEA ; EL-NINO ; INTERANNUAL VARIATIONS ; SURFACE TEMPERATURE ; VARIABILITY ; ENSO ; MONSOON ; CLIMATE ; ONSET |
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/36058 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Bldg 40,Beichen West Rd, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Renguang,Cao, Xi. Relationship of boreal summer 10-20-day and 30-60-day intraseasonal oscillation intensity over the tropical western North Pacific to tropical Indo-Pacific SST[J]. CLIMATE DYNAMICS,2017,48(11). |
APA | Wu, Renguang,&Cao, Xi.(2017).Relationship of boreal summer 10-20-day and 30-60-day intraseasonal oscillation intensity over the tropical western North Pacific to tropical Indo-Pacific SST.CLIMATE DYNAMICS,48(11). |
MLA | Wu, Renguang,et al."Relationship of boreal summer 10-20-day and 30-60-day intraseasonal oscillation intensity over the tropical western North Pacific to tropical Indo-Pacific SST".CLIMATE DYNAMICS 48.11(2017). |
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