Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-16-0123.1 |
A Numerical Study of Outer Rainband Formation in a Sheared Tropical Cyclone | |
Li, Qingqing1,2; Wang, Yuqing3,4; Duan, Yihong2 | |
2017 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The dynamical process of outer rainband formation in a sheared tropical cyclone (TC) is examined in this study using the fully compressible, nonhydrostatic TC model. After the easterly vertical wind shear of 10 m s(-1) was imposed upon an intensifying strong TC, an outer rainband characterized by a wavenumber-1 structure formed as a typical principal rainband downshear. Further analysis indicates that the outer rainband formation was closely connected to the activity of the inner rainband previously formed downshear. Moving radially outward, the inner rainband tended to be filamented owing to the strong radial gradient of angular velocity. As the inner rainband approached the outer boundary of the inner core, convection in its middle and upwind segments reinvigorated and nascent convective cells formed upwind of the rainband, caused mainly by the decreased filamentation and stabilization. Subsequently, the rainband reorganized into a typical outer rainband. Three different scenarios are found to be responsible for the outer rainband formation from downshear inner rainbands. The first is the outer rainband forming from an inner rainband downshear as a sheared vortex Rossby wave. The second is the outer rainband forming directly from a single deformation-induced inner rainband. The third is the outer rainband developing from an inner rainband downshear organized from a blend-merger of inner rainbands that were initiated from locally deformed convection upshear right. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000392419300012 |
WOS关键词 | VERTICAL WIND SHEAR ; VORTEX ROSSBY-WAVES ; PREDICTION SCHEME SHIPS ; SPIRAL BANDS ; PART II ; HURRICANE INTENSITY ; RAPID INTENSIFICATION ; SIMULATED HURRICANE ; POTENTIAL VORTICITY ; ASYMMETRIC STRUCTURE |
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/29400 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Pacific Typhoon Res Ctr, Key Lab Meteorol Disaster, Minist Educ, Nanjing, Jiangsu, Peoples R China; 2.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China; 3.Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA; 4.Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Dept Meteorol, Honolulu, HI USA |
推荐引用方式 GB/T 7714 | Li, Qingqing,Wang, Yuqing,Duan, Yihong. A Numerical Study of Outer Rainband Formation in a Sheared Tropical Cyclone[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(1). |
APA | Li, Qingqing,Wang, Yuqing,&Duan, Yihong.(2017).A Numerical Study of Outer Rainband Formation in a Sheared Tropical Cyclone.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(1). |
MLA | Li, Qingqing,et al."A Numerical Study of Outer Rainband Formation in a Sheared Tropical Cyclone".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.1(2017). |
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