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DOI | 10.1029/2020GL090211 |
Barrier for the Eastward Propagation of Madden‐Julian Oscillation over the Maritime Continent: A Possible New Mechanism | |
Lei Zhang; Weiqing Han | |
2020-10-17 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | The Madden‐Julian Oscillation (MJO) is the dominant intraseasonal variability of the tropical troposphere. Many MJOs originate from the tropical Indian Ocean and propagate into the Pacific via the Maritime Continent (MC). However, 30%–50% of the MJO stalls over the MC, while its cause remains unclear. Here, we find that a new interbasin coupled phenomenon dubbed “Warm Pool Dipole” (WPD), which is associated with out‐of‐phase sea surface temperature anomalies (SSTAs) in the southeast Indian Ocean and the western‐central tropical Pacific, may play an important role in controlling the MJO propagation. During the positive WPD, ~67% of the MJO is stalled over the MC, whereas none is stalled during its negative phase. It is the SSTAs at both poles of the WPD together that produce these effects. The results are robust to cross‐dataset differences and supported by model experiments, although the small observational sample size limits their level of statistical significance. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/299196 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Lei Zhang,Weiqing Han. Barrier for the Eastward Propagation of Madden‐Julian Oscillation over the Maritime Continent: A Possible New Mechanism[J]. Geophysical Research Letters,2020. |
APA | Lei Zhang,&Weiqing Han.(2020).Barrier for the Eastward Propagation of Madden‐Julian Oscillation over the Maritime Continent: A Possible New Mechanism.Geophysical Research Letters. |
MLA | Lei Zhang,et al."Barrier for the Eastward Propagation of Madden‐Julian Oscillation over the Maritime Continent: A Possible New Mechanism".Geophysical Research Letters (2020). |
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