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DOI | 10.1007/s00382-018-4307-z |
Multi-scale interactions of equatorial waves associated with tropical cyclogenesis over the western North Pacific | |
Zhao, Haikun1,2; Jiang, Xianan2; Wu, Liguang1; Klotzbach, Philip J.3 | |
2019-03-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:3023-3038 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The tropical cyclone (TC)-centric approach developed in previous studies tends to overemphasize the direct impact of tropical waves and underestimates their large-scale modulation of western North Pacific (WNP) tropical cyclogenesis (TCG). To overcome these limitations, this study proposes a new approach based on empirical orthogonal function analyses to re-examine associations of multiple waves, including the Madden-Julian oscillation (MJO), quasi-biweekly oscillation (QBWO), convective equatorial Rossby (ER) waves, and synoptic scale waves (SSWs), with WNP TCG events. There is a close association between WNP TCG events (total of 273 TCs in this study) and SSWs (64%), MJO (68%), QBWO (64%) and ER (65%) waves. These suggest that SSW is critical for many TCG events, and all of these intra-seasonal waves significantly modulate TCG events. A majority of TCs (79%) were found to be related to more than one wave type, indicating an important role for a combination of dynamic and thermodynamic conditions associated with multiple waves in TCG events. Further analyses show that SSW activity is strongly modulated by the MJO and ER waves, while the QBWO has no significant impact on SSWs. During convectively active MJO and ER phases, stronger SSW trains with more distinct southeast-northwestward aligned structures can be found compared to convectively inactive phases. Similar intra-seasonal modulation of the transition from the mixed Rossby-gravity waves from the equatorial central Pacific to the SSW trains over the WNP by the three waves is noted, with such transitions largely favored during convectively active MJO and ER phases. |
英文关键词 | Tropical waves Tropical cyclogenesis Western North Pacific Intra-seasonal modulation Equatorial wave transition |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463842700029 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; SUMMER INTRASEASONAL OSCILLATIONS ; SYNOPTIC-SCALE DISTURBANCES ; ROSSBY-GRAVITY WAVES ; CYCLONE ACTIVITY ; PART I ; PREEXISTING TYPHOON ; ENERGY DISPERSION ; MODULATION ; 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/181438 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Joint Int Res Lab Climate & Environm Change ILCEC, Key Lab Meteorol Disaster,Minist Educ KLME,CIC FE, Pacific Typhoon Res Ctr,Earth Syst Modeling Ctr, Nanjing 210044, Jiangsu, Peoples R China; 2.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90024 USA; 3.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Zhao, Haikun,Jiang, Xianan,Wu, Liguang,et al. Multi-scale interactions of equatorial waves associated with tropical cyclogenesis over the western North Pacific[J]. CLIMATE DYNAMICS,2019,52:3023-3038. |
APA | Zhao, Haikun,Jiang, Xianan,Wu, Liguang,&Klotzbach, Philip J..(2019).Multi-scale interactions of equatorial waves associated with tropical cyclogenesis over the western North Pacific.CLIMATE DYNAMICS,52,3023-3038. |
MLA | Zhao, Haikun,et al."Multi-scale interactions of equatorial waves associated with tropical cyclogenesis over the western North Pacific".CLIMATE DYNAMICS 52(2019):3023-3038. |
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