Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0671.1 |
A Unified Moisture Mode Framework for Seasonality of the Madden-Julian Oscillation | |
Jiang, Xianan1,2; Adames, Angel F.3; Zhao, Ming3; Waliser, Duane2; Maloney, Eric4 | |
2018-06-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:11页码:4215-4224 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Madden-Julian oscillation (MJO) exhibits pronounced seasonality. While it is largely characterized by equatorially eastward propagation during the boreal winter, MJO convection undergoes marked poleward movement over the Asian monsoon region during summer, producing a significant modulation of monsoon rainfall. In classical MJO theories that seek to interpret the distinct seasonality in MJO propagation features, the role of equatorial wave dynamics has been emphasized for its eastward propagation, whereas coupling between MJO convection and the mean monsoon flow is considered essential for its northward propagation. In this study, a unified physical framework based on the moisture mode theory, is offered to explain the seasonality in MJO propagation. Moistening and drying caused by horizontal advection of the lower-tropospheric mean moisture by MJO winds, which was recently found to be critical for the eastward propagation of the winter MJO, is also shown to play a dominant role in operating the northward propagation of the summer MJO. The seasonal variations in the mean moisture pattern largely shape the distinct MJO propagation in different seasons. The critical role of the seasonally varying climatological distribution of moisture for the MJO propagation is further supported by the close association between model skill in representing the MJO propagation and skill at producing the lower-tropospheric mean moisture pattern. This study thus pinpoints an important direction for climate model development for improved MJO representation during all seasons. |
英文关键词 | Monsoons Climate models Intraseasonal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432380400003 |
WOS关键词 | STATIC ENERGY BUDGET ; TROPICAL INTRASEASONAL OSCILLATION ; BOREAL SUMMER ; EASTWARD PROPAGATION ; MJO ; ATMOSPHERE ; OCEAN ; TEMPERATURE ; DYNAMICS ; IMPACTS |
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/20358 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90095 USA; 2.CALTECH, Jet Prop Lab, Pasadena, CA USA; 3.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA; 4.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Jiang, Xianan,Adames, Angel F.,Zhao, Ming,et al. A Unified Moisture Mode Framework for Seasonality of the Madden-Julian Oscillation[J]. JOURNAL OF CLIMATE,2018,31(11):4215-4224. |
APA | Jiang, Xianan,Adames, Angel F.,Zhao, Ming,Waliser, Duane,&Maloney, Eric.(2018).A Unified Moisture Mode Framework for Seasonality of the Madden-Julian Oscillation.JOURNAL OF CLIMATE,31(11),4215-4224. |
MLA | Jiang, Xianan,et al."A Unified Moisture Mode Framework for Seasonality of the Madden-Julian Oscillation".JOURNAL OF CLIMATE 31.11(2018):4215-4224. |
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