Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0348.1 |
Dynamics of the Transition from Spiral Rainbands to a Secondary Eyewall in Hurricane Earl (2010) | |
Didlake, Anthony C., Jr.1; Reasor, Paul D.2; Rogers, Robert F.2; Lee, Wen-Chau3 | |
2018-09-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:9页码:2909-2929 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Airborne Doppler radar captured the inner core of Hurricane Earl during the early stages of secondary eyewall formation (SEF), providing needed insight into the SEF dynamics. An organized rainband complex outside of the primary eyewall transitioned into an axisymmetric secondary eyewall containing a low-level tangential wind maximum. During this transition, the downshear-left quadrant of the storm exhibited several notable features. A mesoscale descending inflow (MDI) jet persistently occurred across broad stretches of stratiform precipitation in a pattern similar to previous studies. This negatively buoyant jet traveled radially inward and descended into the boundary layer. Farther inward, enhanced low-level inflow and intense updrafts appeared. The updraft adjacent to the MDI was likely triggered by a region of convergence and upward acceleration (induced by the negatively buoyant MDI) entering the high-(e) boundary layer. This updraft and the MDI in the downshear-left quadrant accelerated the tangential winds in a radial range where the axisymmetric wind maximum of the secondary eyewall soon developed. This same quadrant eventually exhibited the strongest overturning circulation and wind maximum of the forming secondary eyewall. Given these features occurring in succession in the downshear-left quadrant, we hypothesize that the MDI plays a significant dynamical role in SEF. The MDI within a mature rainband complex persistently perturbs the boundary layer, which locally forces enhanced convection and tangential winds. These perturbations provide steady low-level forcing that projects strongly onto the axisymmetric field, and forges the way for secondary eyewall development via one of several SEF theories that invoke axisymmetric dynamical processes. |
英文关键词 | Hurricanes Tropical cyclones Hurricanes typhoons Radars Radar observations |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440800500001 |
WOS关键词 | VORTEX ROSSBY-WAVES ; CYCLONE KINEMATIC STRUCTURE ; TRMM PRECIPITATION RADAR ; REPLACEMENT CYCLES ; TROPICAL CYCLONES ; PART I ; RAPID INTENSIFICATION ; POTENTIAL VORTICITY ; VERTICAL STRUCTURE ; WIND-FIELD |
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/29579 |
专题 | 地球科学 |
作者单位 | 1.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA; 2.NOAA, Atlantic Oceanog & Meteorol Lab, Hurricane Res Div, Miami, FL 33149 USA; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Didlake, Anthony C., Jr.,Reasor, Paul D.,Rogers, Robert F.,et al. Dynamics of the Transition from Spiral Rainbands to a Secondary Eyewall in Hurricane Earl (2010)[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(9):2909-2929. |
APA | Didlake, Anthony C., Jr.,Reasor, Paul D.,Rogers, Robert F.,&Lee, Wen-Chau.(2018).Dynamics of the Transition from Spiral Rainbands to a Secondary Eyewall in Hurricane Earl (2010).JOURNAL OF THE ATMOSPHERIC SCIENCES,75(9),2909-2929. |
MLA | Didlake, Anthony C., Jr.,et al."Dynamics of the Transition from Spiral Rainbands to a Secondary Eyewall in Hurricane Earl (2010)".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.9(2018):2909-2929. |
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