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DOI | 10.1175/JCLI-D-18-0870.1 |
Barrier Effect on MJO Propagation by the Maritime Continent in the MJO Task Force/GEWEX Atmospheric System Study Models | |
Ling, Jian1; Zhao, Yuqing; Chen, Guiwan | |
2019-09-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:17页码:5529-5547 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The simulated Madden-Julian oscillation (MJO) events in 27 general circulation models (GCMs) are identified using an MJO tracking method. The results suggest that the occurrence frequencies of simulated MJO events can represent a model's ability to simulate several characteristics of the MJO to a certain extent during boreal winter, such as propagation range, strength, and termination longitude. All tracked MJO events are classified into those that propagate through the Maritime Continent (MC) (MJO-C) and those that do not (MJO-B), and the weakening and blocking effects on MJO propagation by the MC in GCMs were quantified. In general, if a GCM shows a stronger weakening effect on MJO strength over the MC, it tends to produce a stronger blocking effect on MJO propagation over the MC during boreal winter. The barrier effect of the MC on MJO propagation is exaggerated in most GCMs, while it can be underestimated in some GCMs, especially the coupled GCMs. Strong lower-tropospheric premoistening is identified ahead of the MJO convection center when it is over the central MC for MJO-C but not for MJO-B in most GCMs. Such strong premoistening is mainly attributed to the zonal gradient of lower-tropospheric easterly anomalies within the front Walker cell, which could be a precursor leading to the eastward propagation of MJO convection. In contrast to the observation, the role of the background sea surface temperature and land-sea precipitation contrast in the barrier effect on MJO propagation by the MC is not well captured by most GCMs. |
英文关键词 | Madden-Julian oscillation Madden-Julian oscillation Intraseasonal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477992300001 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; STATIC ENERGY BUDGET ; SOUTH CHINA SEA ; INTRASEASONAL OSCILLATIONS ; EASTWARD PROPAGATION ; MOISTURE ASYMMETRY ; SCALE CIRCULATION ; SUMMER MONSOON ; FORECAST SKILL ; SST ANOMALIES |
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/186755 |
专题 | 气候变化 |
作者单位 | 1.Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Ling, Jian,Zhao, Yuqing,Chen, Guiwan. Barrier Effect on MJO Propagation by the Maritime Continent in the MJO Task Force/GEWEX Atmospheric System Study Models[J]. JOURNAL OF CLIMATE,2019,32(17):5529-5547. |
APA | Ling, Jian,Zhao, Yuqing,&Chen, Guiwan.(2019).Barrier Effect on MJO Propagation by the Maritime Continent in the MJO Task Force/GEWEX Atmospheric System Study Models.JOURNAL OF CLIMATE,32(17),5529-5547. |
MLA | Ling, Jian,et al."Barrier Effect on MJO Propagation by the Maritime Continent in the MJO Task Force/GEWEX Atmospheric System Study Models".JOURNAL OF CLIMATE 32.17(2019):5529-5547. |
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