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DOI | 10.1175/JCLI-D-18-0722.1 |
Equatorial Windows and Barriers for Stationary Rossby Wave Propagation | |
Li, Yanjie1; Feng, Jin2,3; Li, Jianping4,5; Hu, Aixue6 | |
2019-09-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:18页码:6117-6135 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Rossby waves can cross the equator and connect the Northern Hemisphere (NH) and Southern Hemisphere (SH), or be blocked in the vicinity of the equator. This work explores the windows and barriers for the cross-equatorial waves (CEWs) by the wave ray ensemble method. The eastern Pacific and Atlantic regions are identified as common windows in both boreal winter and summer, while the Africa-Indian Ocean section exists as a window only in boreal summer. The western-central Pacific is found to be a barrier section. These results are consistent with correlation analysis of reanalysis data. Moreover, the dependence on the wavenumber of CEWs is investigated, revealing that they are restricted to long waves with zonal wavenumbers less than 6 and that their wavenumber vectors exhibit a northwest-southeast (southwest-northeast) tilt when they cross the equator from the NH to SH (from the SH to NH). This long-wave dominance of CEWs results from the spectral-selective filtering mechanism, which suggests that long waves have narrower equatorial barriers than short waves. Finally, the main wave duct associated with each window is obtained by the global passing CEW density distribution. The results indicate that the main CEW ducts roughly follow a great circle-like pathway, except for the Africa-Indian Ocean window in boreal summer, which may be modulated by the cross-equatorial monsoonal flow. |
英文关键词 | Dynamics Rossby waves Teleconnections |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000482205200001 |
WOS关键词 | PACIFIC CONVECTION OSCILLATION ; INDO-WESTERN PACIFIC ; GLOBAL TELECONNECTIONS ; INTERHEMISPHERIC INFLUENCE ; HADLEY CIRCULATION ; PLANETARY-WAVES ; NORTH PACIFIC ; ATMOSPHERE ; FREQUENCY ; LATITUDE |
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/186786 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China; 2.China Meteorol Adm, Inst Urban Meteorol, Beijing, Peoples R China; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 4.Ocean Univ China, Inst Adv Ocean Studies, Key Lab Phys Oceanog, Qingdao, Shandong, Peoples R China; 5.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Shandong, Peoples R China; 6.Natl Ctr Atmospher Res, Climate & Global Dynam Lab, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Li, Yanjie,Feng, Jin,Li, Jianping,et al. Equatorial Windows and Barriers for Stationary Rossby Wave Propagation[J]. JOURNAL OF CLIMATE,2019,32(18):6117-6135. |
APA | Li, Yanjie,Feng, Jin,Li, Jianping,&Hu, Aixue.(2019).Equatorial Windows and Barriers for Stationary Rossby Wave Propagation.JOURNAL OF CLIMATE,32(18),6117-6135. |
MLA | Li, Yanjie,et al."Equatorial Windows and Barriers for Stationary Rossby Wave Propagation".JOURNAL OF CLIMATE 32.18(2019):6117-6135. |
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