Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0519.1 |
Contributions of Different Time-Scale Variations to Tropical Cyclogenesis over the Western North Pacific | |
Cao, Xi1; Wu, Renguang1,2; Bi, Mingyu3,4 | |
2018-04-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The present study investigates relative contributions of different time-scale variations of environmental factors to the tropical cyclone (TC) genesis over the western North Pacific (WNP) during July-August-September-October (JASO). Distinct from previous studies that are concerned with large-scale spatial patterns during a certain period, the present study focuses on local and instantaneous conditions of the TC genesis. Analysis shows that the contribution of convection and lower-level vorticity to the TC genesis is mainly due to intraseasonal and synoptic variations. The contribution of vertical wind shear is largely related to synoptic variations. The contribution of midlevel specific humidity is almost 2 times more from intraseasonal variations than from synoptic variations. The contribution of sea surface temperature (SST) to the TC genesis is mainly due to interannual and intraseasonal variations. The barotropic energy for synoptic-scale disturbances during the TC genesis comes mainly from climatological mean flows over the southwest quadrant and from intraseasonal wind variations over the northeast quadrant of the WNP, respectively. The contribution of interannual variations to the TC genesis is enhanced over the southeast quadrant of the WNP. More TCs form under weak easterly and westerly vertical shears, respectively, during El Nino developing and decaying JASO. The contribution of interannual variations of SST tends to be larger during El Nino decaying than during developing JASO. |
英文关键词 | Atmosphere Pacific Ocean ENSO Tropical cyclones Statistical techniques Tropical variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428694000010 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; CYCLONE ACTIVITY ; PART I ; INTRASEASONAL OSCILLATION ; MONSOON TROUGH ; GENESIS ; ENSO ; SST ; VARIABILITY ; SUMMER |
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/19779 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Int Lab Climate & Environm Change, Nanjing, Jiangsu, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Cao, Xi,Wu, Renguang,Bi, Mingyu. Contributions of Different Time-Scale Variations to Tropical Cyclogenesis over the Western North Pacific[J]. JOURNAL OF CLIMATE,2018,31(8). |
APA | Cao, Xi,Wu, Renguang,&Bi, Mingyu.(2018).Contributions of Different Time-Scale Variations to Tropical Cyclogenesis over the Western North Pacific.JOURNAL OF CLIMATE,31(8). |
MLA | Cao, Xi,et al."Contributions of Different Time-Scale Variations to Tropical Cyclogenesis over the Western North Pacific".JOURNAL OF CLIMATE 31.8(2018). |
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