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Modulation of boreal extended summer tropical cyclogenesis over the northwest Pacific by the quasi-biweekly oscillation under different El Nino-southern oscillation phases
Han, Xiang1,2,3; Zhao, Haikun1; Li, Xun1; Raga, Graciela B.; Wang, Chao; Li, Qingqing
Source PublicationINTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN0899-8418
AbstractThe study of the interannual and intraseasonal modulation of tropical cyclogenesis (TCG) in the northwest Pacific (NWP) basin has received significant attention in the past. Most previous studies have focused on the individual impact of El Nino-southern oscillation (ENSO) or Madden-Julian Oscillation on TCG, whereas the combined effect of ENSO and another leading intraseasonal oscillation mode, quasi-biweekly oscillation (QBWO), on NWP TCG has rarely been studied. Therefore, this study systemically investigates the modulation of NWP TCG by the QBWO under different ENSO phases. A significant modulation of TCG by QBWO in the ENSO neutral years is observed, with significantly increased (decreased) TCG over the NWP in QBWO active (inactive) phases. Moreover, during El Nino years and La Nina years, the modulation of TCG by QBWO is not significant and no distinctive difference in the TCG frequency can be detected. Further analyses show that the modulation of TCG by the QBWO is mainly related to the changes in large-scale environment and energy that affect TCG associated with active or inactive phases of the QBWO under different ENSO phases. Large-scale environmental factors and energy are more favourable for TCG during ENSO neutral years compared with El Nino and La Nina years. These results are associated with QBWO cycle under the impact of background (e.g., boundary layer moisture and zonal wind shear) which is determined by ENSO conditions.
DepartmentLTO
KeywordEl Nino-southern oscillation northwest Pacific quasi-biweekly oscillation tropical cyclogenesis
DOI10.1002/joc.6244
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17696
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster,Minist Educ, Pacific Typhoon Res Ctr,Earth Syst Modeling Ctr, Joint Int Res Lab Climate & Environm Change,Colla, Nanjing 210044, Jiangsu, Peoples R China
2.Key Lab South China Sea Meteorol Disaster Prevent, Haikoum, Peoples R China
3.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Raga, Graciela B.] Univ Nacl Autonoma Mexico, Ctr Ciencias Atmosfera, Mexico City, DF, Mexico
Recommended Citation
GB/T 7714
Han, Xiang,Zhao, Haikun,Li, Xun,et al. Modulation of boreal extended summer tropical cyclogenesis over the northwest Pacific by the quasi-biweekly oscillation under different El Nino-southern oscillation phases[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY.
APA Han, Xiang,Zhao, Haikun,Li, Xun,Raga, Graciela B.,Wang, Chao,&Li, Qingqing.
MLA Han, Xiang,et al."Modulation of boreal extended summer tropical cyclogenesis over the northwest Pacific by the quasi-biweekly oscillation under different El Nino-southern oscillation phases".INTERNATIONAL JOURNAL OF CLIMATOLOGY
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