Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD030878 |
Modulation of the MJO-Related Teleconnections by the QBO | |
Feng, Pei-Ning1; Lin, Hai2 | |
2019-11-28 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:22页码:12022-12033 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Previous studies have provided observational evidence for a correlation between certain phases of the Madden-Julian Oscillation (MJO) and the North Atlantic Oscillation (NAO), at a lag of about 10 days. Such a relation implies that the tropical convection of the MJO may provide sources of skill for subseasonal predictions in the extratropical regions. In this study, we show that the MJO-NAO connection is influenced by the phase of the quasi-biennial oscillation (QBO). During the westerly phase of QBO (WQBO), a stronger and longer lasting MJO-NAO teleconnection is observed. About 10 days after the MJO phase 3 (7), which corresponds to enhanced (suppressed) diabatic heating anomaly in the tropical Indian Ocean and reduced (enhanced) convection in the western Pacific, a positive (negative) NAO tends to occur. On the other hand, under the easterly phase of QBO (EQBO), the MJO-NAO teleconnection is also observed, but weaker and with less statistical significance. The QBO possibly influences the MJO-related teleconnection by modulating the extratropical basic state. During WQBO years, there is subtropical anomalous westerly wind in the North Pacific, and as a result, the enhanced subtropical westerly jet provides a favorable environment for the MJO-induced extratropical Rossby wave to propagate. The anomalous high-latitude North Atlantic westerly is also favorable for troposphere-stratosphere coupling and for the NAO to develop. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000499180200001 |
WOS关键词 | QUASI-BIENNIAL OSCILLATION ; MADDEN-JULIAN OSCILLATION ; ROSSBY-WAVE PROPAGATION ; GEOPOTENTIAL HEIGHT ; LINEAR-RESPONSE ; CIRCULATION ; TEMPERATURE ; SIGNATURE ; SURFACE ; STEADY |
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/225820 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.McGill Univ, Dept Atmospher & Ocean Sci, Quebec City, PQ, Canada; 2.Environm & Climate Change Canada, Rech Previs Numer Atmospher, Quebec City, PQ, Canada |
推荐引用方式 GB/T 7714 | Feng, Pei-Ning,Lin, Hai. Modulation of the MJO-Related Teleconnections by the QBO[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(22):12022-12033. |
APA | Feng, Pei-Ning,&Lin, Hai.(2019).Modulation of the MJO-Related Teleconnections by the QBO.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(22),12022-12033. |
MLA | Feng, Pei-Ning,et al."Modulation of the MJO-Related Teleconnections by the QBO".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.22(2019):12022-12033. |
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