Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031503 |
A Damping Effect of the Maritime Continent for the Madden-Julian Oscillation | |
Jiang, Xianan1,2; Su, Hui2; Waliser, Duane E.2 | |
2019-12-21 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:24页码:13693-13713 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The damping effect of the Maritime Continent (MC) on propagation of the Madden-Julian Oscillation (MJO) has been widely recognized; however, its underlying physics remains largely elusive. Capitalizing on the latest high-resolution reanalysis data (ERA-5) from the ECMWF, analyses in this study suggest that the interruption of lower-tropospheric moistening over the MC land during MJO eastward propagation is mainly due to a drying effect induced by zonal advection of the low-level winter mean moisture by MJO winds. The low-level mean moisture pattern over the MC tends to closely follow local topography, with moisture maxima collocated with local mountain peaks. Given this mean moisture distribution, the moisture advection by anomalous easterly MJO winds corresponding to the active MJO convection over the eastern Indian Ocean will lead to a drying (moistening) effect to the east (west) of the mountain peaks. Diagnosis based on hourly output from ERA-5 further illustrates that the diurnal cycle plays a crucial role for the formation of the topographically locked mean moisture pattern over the MC. This study, therefore, indicates that high-resolution models capable of resolving detailed topography and associated diurnal cycle over the MC could be necessary for realistic depiction of the interaction between the MC and MJO. |
英文关键词 | the madden-julian oscillation the maritime continent convection moisture preconditioning diurnal cycle |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000503691900001 |
WOS关键词 | DIURNAL CYCLE ; INTRASEASONAL OSCILLATION ; EASTWARD PROPAGATION ; SCALE INTERACTIONS ; PREDICTION SKILL ; MOISTURE MODES ; MJO ; PRECIPITATION ; CONVECTION ; RAINFALL |
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/225959 |
专题 | 环境与发展全球科技态势 |
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 91125 USA |
推荐引用方式 GB/T 7714 | Jiang, Xianan,Su, Hui,Waliser, Duane E.. A Damping Effect of the Maritime Continent for the Madden-Julian Oscillation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(24):13693-13713. |
APA | Jiang, Xianan,Su, Hui,&Waliser, Duane E..(2019).A Damping Effect of the Maritime Continent for the Madden-Julian Oscillation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(24),13693-13713. |
MLA | Jiang, Xianan,et al."A Damping Effect of the Maritime Continent for the Madden-Julian Oscillation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.24(2019):13693-13713. |
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