Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0076.1 |
The Zonal Oscillation and the Driving Mechanisms of the Extreme Western North Pacific Subtropical High and Its Impacts on East Asian Summer Precipitation | |
Cheng, Tat Fan1; Lu, Mengqian1,2; Dai, Lun1 | |
2019-05-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:10页码:3025-3050 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | This paper scrutinizes the zonal oscillation of the western North Pacific subtropical high (WNPSH) via diagnosing its two extreme phases, which are defined by the top 10% strongest (positive phase) and the weakest (negative phase) WNPSH index (WNPSHI) days during summers in 1979-2016. Key findings include the following: a tripole pattern consisting of intensified (weakened) precipitation over the Maritime Continent and the East Asian summer monsoon regions, and suppressed (strengthened) precipitation over the western North Pacific summer monsoon region during positive (negative) WNPSH phases; a westward movement of WNPSH-induced precipitation anomalies that subsequently affects eastern China, Japan, and the Korean Peninsula at different time lags; an OLR-vorticity pattern explained by atmospheric responses to thermal sources is suggested to drive the oscillation; and the competitive interaction of local air-sea feedbacks, especially during the positive phase. In addition, moderate-to-strong positive correlations between the WNPSHI and the Nino-3.4 index are found on 1-2-, 2-3-, and 3-6-yr time scales; both exhibit decadal shifts to a higher-frequency mode, suggesting the intensification of both the zonal WNPSH oscillation and the ENSO under the changing climate and their close interdecadal association. A nonlinear quasi-biennial WNPSH-ENSO relationship is identified: the positive (negative) WNPSH phase sometimes occurs during 1) a decaying El Nino (La Nina) in the preceding summer/autumn, and/or 2) a developing La Nina (El Nino) in the current summer/autumn. A full ENSO transition from moderate-to-strong El Nino to La Nina is often seen during the positive phase, offering potential in predicting ENSO events and extreme WNPSH phases and thereby the summer monsoon rainfall in East Asia. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000467334600001 |
WOS关键词 | INTERANNUAL VARIABILITY ; TROPICAL PACIFIC ; ANNUAL CYCLE ; INTRASEASONAL OSCILLATION ; COMBINATION-MODE ; MONSOON ; HEAT ; CIRCULATION ; PROPAGATION ; ATMOSPHERE |
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/183013 |
专题 | 气候变化 |
作者单位 | 1.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Clear Water Bay, Hong Kong, Peoples R China; 2.Guangzhou HKUST Fok Ying Tung Res Inst, Guangzhou, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Cheng, Tat Fan,Lu, Mengqian,Dai, Lun. The Zonal Oscillation and the Driving Mechanisms of the Extreme Western North Pacific Subtropical High and Its Impacts on East Asian Summer Precipitation[J]. JOURNAL OF CLIMATE,2019,32(10):3025-3050. |
APA | Cheng, Tat Fan,Lu, Mengqian,&Dai, Lun.(2019).The Zonal Oscillation and the Driving Mechanisms of the Extreme Western North Pacific Subtropical High and Its Impacts on East Asian Summer Precipitation.JOURNAL OF CLIMATE,32(10),3025-3050. |
MLA | Cheng, Tat Fan,et al."The Zonal Oscillation and the Driving Mechanisms of the Extreme Western North Pacific Subtropical High and Its Impacts on East Asian Summer Precipitation".JOURNAL OF CLIMATE 32.10(2019):3025-3050. |
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