Climate Change Data Portal
DOI | 10.1029/2021JD034675 |
Dipole Mode of the Precipitation Anomaly Over the Tibetan Plateau in Mid-Autumn Associated With Tropical Pacific-Indian Ocean Sea Surface Temperature Anomaly: Role of Convection Over the Northern Maritime Continent | |
Zhang P.; Duan A. | |
发表日期 | 2021 |
ISSN | 2169-897X |
卷号 | 126期号:20 |
英文摘要 | Based on observational data and numerical simulation results with the Community Atmosphere Model (CAM4), version 4 atmospheric general circulation model (AGCM), the influence of the sea surface temperature anomaly (SSTA) of the tropical Pacific–Indian Ocean mode (PIM) on the interannual variability of the Tibetan Plateau (TP) precipitation in mid-autumn (October) is investigated. We find that the interannual variation of the mid-autumn TP precipitation is characterized by a dipole mode with a southeast–northwest inverse pattern, which is influenced significantly by the large-scale circulation anomalies induced by PIM. During a positive phase of PIM, that is, positive SSTA in both the tropical central-eastern Pacific and western Indian Ocean accompanied by negative SSTA around the Maritime Continent, a robust lower-level anticyclonic anomaly over the South Asia region (SAAC) and an upper-level cyclonic anomaly over subtropical Asia are generated owing to the Rossby wave response to the suppressed convective heating over the northern Maritime Continent. As a result, the southerly (northerly) anomalies on the west (east) side of the SAAC can enhance (reduce) the transportation of moisture and the ascending motion over the northwestern (southeastern) TP. Meanwhile, the southward-shifted East Asian westerly jet can further enhance the ascending motion over the northwestern TP by stimulating secondary circulation. Correspondingly, a positive (negative) precipitation anomaly appears over the northwestern (southeastern) TP. During a negative phase of PIM, the opposite case is also true. Therefore, the suppressed convective heating over the Maritime Continent serves as a pivotal medium by which PIM affects the TP precipitation in mid-autumn. © 2021. American Geophysical Union. All Rights Reserved. |
英文关键词 | convection anomaly; Maritime Continent; PIM; precipitation; Tibetan Plateau |
来源期刊 | Journal of Geophysical Research: Atmospheres
![]() |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/236946 |
作者单位 | State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth Science, University of Chinese Academy of Sciences, Beijing, China |
推荐引用方式 GB/T 7714 | Zhang P.,Duan A.. Dipole Mode of the Precipitation Anomaly Over the Tibetan Plateau in Mid-Autumn Associated With Tropical Pacific-Indian Ocean Sea Surface Temperature Anomaly: Role of Convection Over the Northern Maritime Continent[J],2021,126(20). |
APA | Zhang P.,&Duan A..(2021).Dipole Mode of the Precipitation Anomaly Over the Tibetan Plateau in Mid-Autumn Associated With Tropical Pacific-Indian Ocean Sea Surface Temperature Anomaly: Role of Convection Over the Northern Maritime Continent.Journal of Geophysical Research: Atmospheres,126(20). |
MLA | Zhang P.,et al."Dipole Mode of the Precipitation Anomaly Over the Tibetan Plateau in Mid-Autumn Associated With Tropical Pacific-Indian Ocean Sea Surface Temperature Anomaly: Role of Convection Over the Northern Maritime Continent".Journal of Geophysical Research: Atmospheres 126.20(2021). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Zhang P.]的文章 |
[Duan A.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Zhang P.]的文章 |
[Duan A.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Zhang P.]的文章 |
[Duan A.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。