Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD025665 |
The role of global circumnavigating mode in the MJO initiation and propagation | |
Zhang, Fuqing1,2; Taraphdar, Sourav1,2; Wang, Shuguang3 | |
2017-06-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A series of convection-permitting regional-model simulations are used to study the influences of intraseasonal forcings from the periphery of the tropical Indian Ocean on the October 2011 Madden-Julian Oscillation (MJO) event well observed during the Dynamics of the Madden-Julian Oscillation field campaign. These sensitivity experiments demonstrate the predominant role of a global circumnavigating mode in the initiation and propagation of this MJO event, although the regional framework would not completely rule out influences from the extratropics through the western boundary of the model domain. It is found that filtering out intraseasonal forcing leads to the absence of Kelvin waves, which may reduce moisture transport and weakened lower level convergence at the leading edge of the westerlies and further leads to diminishing MJO signatures in these sensitivity experiments. Meanwhile, for the same regional domain initiated 2weeks before the onset of the MJO convection, there is little impact of whether or not the global MJO signals retained in the initial conditions. On the other hand, the removal of the global MJO signals from the lateral boundary conditions will not affect the propagation of the MJO after it has been initiated in the regional model domain. |
英文关键词 | Madden-Julian Oscillation DYNAMO global circumnavigating mode tropical waves |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131800018 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; COUPLED EQUATORIAL WAVES ; WEST PACIFIC OCEANS ; CLIMATE MODELS ; MEAN STATE ; PRECIPITATION ; EXTRATROPICS ; ADVECTION ; DYNAMICS ; SIGNALS |
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/34383 |
专题 | 气候变化 |
作者单位 | 1.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA; 2.Penn State Univ, Ctr Adv Data Assimilat & Predictabil Tech, University Pk, PA 16802 USA; 3.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA |
推荐引用方式 GB/T 7714 | Zhang, Fuqing,Taraphdar, Sourav,Wang, Shuguang. The role of global circumnavigating mode in the MJO initiation and propagation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(11). |
APA | Zhang, Fuqing,Taraphdar, Sourav,&Wang, Shuguang.(2017).The role of global circumnavigating mode in the MJO initiation and propagation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(11). |
MLA | Zhang, Fuqing,et al."The role of global circumnavigating mode in the MJO initiation and propagation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.11(2017). |
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