Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0201.1 |
Sensitivity of Tropical Cyclone Track to the Vertical Structure of a Nearby Monsoon Gyre | |
Ge, Xuyang1; Yan, Ziyu1; Peng, Melinda2,3; Bi, Mingyu1; Li, Tim4,5 | |
2018-06-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:6页码:2017-2028 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The impact of different vertical structures of a nearby monsoon gyre (MG) on a tropical cyclone (TC) track is investigated using idealized numerical simulations. In the experiment with a relatively deeper MG, the TC experiences a sharp northward turn at a critical point when its zonal westward-moving speed slows down to zero. At the same time, the total vorticity tendency for the TC wavenumber-1 component nearly vanishes as the vorticity advection by the MG cancels the vorticity advection by the TC. At this point, the TC motion is dominated by the beta effect, as in a no-mean-flow environment, and takes a sharp northward turn. In contrast, the TC does not exhibit a sharp northward turn with a shallower MG nearby. In the case with a deeper MG, a greater relative vorticity gradient of the MG promotes a quicker attraction between the TC and MG through the vorticity segregation process. In addition, a larger outer size of the TC also favors a faster westward propagation from its initial position, thus having more potential to collocate with the MG. Once the coalescence is in place, the Rossby wave energy dispersion associated with the TC and MG together is enhanced and rapidly strengthens the southwesterly flow on the eastern flank of both systems. The steering flow from both the beta gyre and the Rossby wave dispersion leads the TC to take a sharp northward track when the total vorticity tendency is at its minimum. This study indicates the importance of good representations of the TC structure and its nearby environmental flows in order to accurately predict TC motions. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434942300014 |
WOS关键词 | MOTION ; PREDICTION ; PACIFIC ; MODEL ; ENSO ; FLOW |
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/29681 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Joint Int Res Lab Climate & Environm Change, Key Lab Meteorol Disaster,Minist Educ, Nanjing, Jiangsu, Peoples R China; 2.CSRA Inc, Monterey, CA USA; 3.Naval Res Lab, Monterey, CA USA; 4.Univ Hawaii Manoa, Dept Meteorol, Honolulu, HI 96822 USA; 5.Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA |
推荐引用方式 GB/T 7714 | Ge, Xuyang,Yan, Ziyu,Peng, Melinda,et al. Sensitivity of Tropical Cyclone Track to the Vertical Structure of a Nearby Monsoon Gyre[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(6):2017-2028. |
APA | Ge, Xuyang,Yan, Ziyu,Peng, Melinda,Bi, Mingyu,&Li, Tim.(2018).Sensitivity of Tropical Cyclone Track to the Vertical Structure of a Nearby Monsoon Gyre.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(6),2017-2028. |
MLA | Ge, Xuyang,et al."Sensitivity of Tropical Cyclone Track to the Vertical Structure of a Nearby Monsoon Gyre".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.6(2018):2017-2028. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论