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DOI | 10.1175/JCLI-D-17-0476.1 |
Effect of Madden-Julian Oscillation Occurrence Frequency on the Interannual Variability of Northern Hemisphere Stratospheric Wave Activity in Winter | |
Wang, Feiyang1; Tian, Wenshou1; Xie, Fei2; Zhang, Jiankai1; Han, Yuanyuan1 | |
2018-07-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:13页码:5031-5049 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | This study uses reanalysis datasets and numerical experiments to investigate the influence of the occurrence frequency of the individual phases of the Madden-Julian oscillation (MJO) on the interannual variability of stratospheric wave activity in the middle and high latitudes of the Northern Hemisphere during boreal winter [November-February (NDJF)]. Our analysis reveals that the occurrence frequency of MJO phase 4 in winter is significantly positively correlated with the interannual variability of the Eliassen-Palm (E-P) flux divergence anomalies in the northern extratropical stratosphere; that is, higher (lower) occurrence frequency of MJO phase 4 corresponds to weaker (stronger) upward wave fluxes and increased (decreased) E-P flux divergence anomalies in the middle and upper stratosphere at mid-to-high latitudes, which implies depressed (enhanced) wave activity accompanied by a stronger (weaker) polar vortex in that region. The convection anomalies over the Maritime Continent related to MJO phase 4 excite a Rossby wave train that propagates poleward to middle and high latitudes, and is in antiphase with the climatological stationary waves of wavenumber 1 at middle and high latitudes. As the spatial distribution of the convection anomalies during MJO phase 7 has an almost opposite, but weaker, pattern to that during MJO phase 4, the occurrence frequency of MJO phase 7 has an opposite and weaker effect on the northern extratropical stratosphere to MJO phase 4. However, the other MJO phases (1, 2, 3, 5, 6, and 8) cannot significantly influence the northern extratropical stratosphere because the wave responses in these phases are neither totally in nor out of phase with the background stationary wavenumber 1. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437827700005 |
WOS关键词 | QUASI-BIENNIAL OSCILLATION ; ARCTIC POLAR VORTEX ; BOREAL WINTER ; EL-NINO ; PLANETARY-WAVES ; RELATIVE ROLES ; SEA-ICE ; CIRCULATION ; OZONE ; MJO |
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/20666 |
专题 | 气候变化 |
作者单位 | 1.Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou, Gansu, Peoples R China; 2.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Feiyang,Tian, Wenshou,Xie, Fei,et al. Effect of Madden-Julian Oscillation Occurrence Frequency on the Interannual Variability of Northern Hemisphere Stratospheric Wave Activity in Winter[J]. JOURNAL OF CLIMATE,2018,31(13):5031-5049. |
APA | Wang, Feiyang,Tian, Wenshou,Xie, Fei,Zhang, Jiankai,&Han, Yuanyuan.(2018).Effect of Madden-Julian Oscillation Occurrence Frequency on the Interannual Variability of Northern Hemisphere Stratospheric Wave Activity in Winter.JOURNAL OF CLIMATE,31(13),5031-5049. |
MLA | Wang, Feiyang,et al."Effect of Madden-Julian Oscillation Occurrence Frequency on the Interannual Variability of Northern Hemisphere Stratospheric Wave Activity in Winter".JOURNAL OF CLIMATE 31.13(2018):5031-5049. |
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