Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0042.1 |
Doppler Radar Analysis of the Rapid Intensification of Typhoon Goni (2015) after Eyewall Replacement | |
Shimada, Udai1; Sawada, Masahiro1; Yamada, Hiroyuki2 | |
2018 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:1页码:143-162 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | A ground-based Doppler radar observed the rapid intensification (RI) of Typhoon Goni (2015) for 24 h immediately after it completed an eyewall replacement cycle. Goni's RI processes were examined by using radar reflectivity and wind fields retrieved by the ground-based velocity track display (GBVTD) technique. The maximum wind at 2-km altitude increased by 30m(-1) during the first 6 h of RI, and it further increased by 20ms(-1) during the subsequent 12 h. Around the onset of RI, relatively strong outflow (>2ms(-1)) was present both inside and outside the radius of maximum wind (RMW) above the boundary layer (BL), suggesting the existence of supergradient flow in and just above the BL. Despite this outflow, angular momentum increased inside the RMW. The low-levelRMWcontracted rapidly from 50 to 33 km, causing theRMWto slope greatly outward with height. The radius of maximum reflectivity was a few kilometers inside the RMW. A budget analysis of absolute angular momentum showed that the outflow contributed to the contraction of the tangential wind field. During RI, eyewall convection was enhanced, and a well-defined eye appeared. The low-level outflow changed into inflow immediately outside the RMW. Then the tangential wind field and high inertial stability region expanded radially outward, followed by the formation of an outer reflectivity maximum at twice the RMW. The contraction speed of the low-level RMW slowed down. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425750200008 |
WOS关键词 | TROPICAL CYCLONE INTENSIFICATION ; HURRICANE EDOUARD 2014 ; AXISYMMETRICAL BALANCE DYNAMICS ; LAYER WIND STRUCTURE ; VORTEX ROSSBY-WAVES ; PART I ; KINEMATIC STRUCTURE ; BOUNDARY-LAYER ; ISABEL 2003 ; NUMERICAL-SIMULATION |
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/29654 |
专题 | 地球科学 |
作者单位 | 1.Meteorol Res Inst, Tsukuba, Ibaraki, Japan; 2.Univ Ryukyus, Nishihara, Okinawa, Japan |
推荐引用方式 GB/T 7714 | Shimada, Udai,Sawada, Masahiro,Yamada, Hiroyuki. Doppler Radar Analysis of the Rapid Intensification of Typhoon Goni (2015) after Eyewall Replacement[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(1):143-162. |
APA | Shimada, Udai,Sawada, Masahiro,&Yamada, Hiroyuki.(2018).Doppler Radar Analysis of the Rapid Intensification of Typhoon Goni (2015) after Eyewall Replacement.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(1),143-162. |
MLA | Shimada, Udai,et al."Doppler Radar Analysis of the Rapid Intensification of Typhoon Goni (2015) after Eyewall Replacement".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.1(2018):143-162. |
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