Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0060.1 |
Atmospheric Overturning across Multiple Scales of an MJO Event during the CINDY/DYNAMO Campaign | |
Chen, Xingchao1,2; Pauluis, Olivier M.1,2; Zhang, Fuqing3,4 | |
2018-02-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:2页码:381-399 |
文章类型 | Article |
语种 | 英语 |
国家 | U Arab Emirates; USA |
英文摘要 | This study investigates the atmospheric overturning of the October 2011 MJO event observed during the Cooperative Indian Ocean Experiment on Intraseasonal Variability in the Year 2011 (CINDY)/DYNAMO field experiment using a cloud-permitting numerical model. The isentropic analysis is used to sort the vertical mass transport in terms of the equivalent potential temperature of the air parcels, which naturally decomposes the atmospheric overturning between ascending air with high entropy and subsiding air with low entropy. The circulation is further decomposed into contributions of four main scales: basinwide ascent, meridional overturning, regional overturning, and convection. Results show that the convective scale dominates the upwardmass transport while larger scales play an important role both by allowing a deeper overturning and by modulating convective activity. There are substantial changes in the atmospheric overturning during different phases of this MJO event. Increased convective activity at low levels precedes the onset of the MJO by several days. The initiation of the MJO itself is associated with a substantial increase in the atmospheric overturning over the Indian Ocean. The subsequent eastward propagation of the MJO event can be clearly captured by the evolutions of convective-scale vertical mass fluxes at different altitudes. The equivalent potential temperatures of the rising and subsiding air parcels in the convective-scale overturning are also increased in the troposphere during the active phase of the MJO. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425753300001 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; COUPLED EQUATORIAL WAVES ; VERTICAL STRUCTURE ; INTRASEASONAL VARIABILITY ; INDIAN-OCEAN ; PART I ; CLOUD ; CIRCULATION ; CONVECTION ; MODEL |
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/29291 |
专题 | 地球科学 |
作者单位 | 1.New York Univ Abu Dhabi, Ctr Prototype Climate Modeling, Abu Dhabi, U Arab Emirates; 2.NYU, Courant Inst Math Sci, New York, NY 10003 USA; 3.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA; 4.Penn State Univ, Ctr Adv Data Assimilat & Predictabil Tech, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Chen, Xingchao,Pauluis, Olivier M.,Zhang, Fuqing. Atmospheric Overturning across Multiple Scales of an MJO Event during the CINDY/DYNAMO Campaign[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(2):381-399. |
APA | Chen, Xingchao,Pauluis, Olivier M.,&Zhang, Fuqing.(2018).Atmospheric Overturning across Multiple Scales of an MJO Event during the CINDY/DYNAMO Campaign.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(2),381-399. |
MLA | Chen, Xingchao,et al."Atmospheric Overturning across Multiple Scales of an MJO Event during the CINDY/DYNAMO Campaign".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.2(2018):381-399. |
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