Kinematics and Microphysics of Convection in the Outer Rainband of Typhoon Nida (2016) Revealed by Polarimetric Radar

被引：84

作者：

Wu, Dan ^{[1
,2
,3
,4
,5
]}

Zhao, Kun ^{[1
,2
,3
,4
]}

Kumjian, Matthew R. ^{[6
]}

Chen, Xiaomin ^{[1
,2
,3
,4
]}

Huang, Hao ^{[1
,2
,3
,4
]}

Wang, Mingjun ^{[1
,2
,3
,4
]}

Didlake, Anthony C., Jr. ^{[6
]}

Duan, Yihong ^{[7
]}

Zhang, Fuqing ^{[6
]}

机构：

[1] Nanjing Univ, MOE, Key Lab Mesoscale Severe Weather, Nanjing, Jiangsu, Peoples R China

[2] Nanjing Univ, Sch Atmospher Sci, Nanjing, Jiangsu, Peoples R China

[3] Nanjing Univ, China Meteorol Adm, State Key Lab Severe Weather, Beijing, Peoples R China

[4] Nanjing Univ, Joint Ctr Atmospher Radar Res, Beijing, Peoples R China

[5] Shanghai Typhoon Inst, Shanghai, Peoples R China

[6] Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA

[7] Chinese Acad Meteorol Sci, China Meteorol Adm, State Key Lab Severe Weather, Beijing, Peoples R China

来源：

MONTHLY WEATHER REVIEW | 2018年 / 146卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Tropical cyclones; Cloud microphysics; Radars; Radar observations; SECONDARY EYEWALL FORMATION; TROPICAL CYCLONE STRUCTURE; BOUNDARY-LAYER STRUCTURE; HURRICANE RAINBANDS; SPIRAL RAINBANDS; SQUALL LINES; MESOSCALE; DYNAMICS; ICE; PRECIPITATION;

D O I：

10.1175/MWR-D-17-0320.1

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

This study analyzes the microphysics of convective cells in an outer rainband of Typhoon Nida (2016) using data collected by a newly upgraded operational polarimetric radar in China. The life cycle of these convective cells is divided into three stages: developing, mature, and decaying according to the intensity of the corresponding updraft. Composite analysis shows that deep columns of Z(DR) and K-DP collocate well with the enhanced updraft as the cells develop to their mature stage. A layered microphysical structure is observed in the ice region with riming near the -5 degrees C level within the updraft, aggregation around the -15 degrees C level, and deposition anywhere above the 0 degrees C level. These ice-phase microphysical processes are important pathways of particle growth in the outer rainbands. In particular, riming contributes significantly to surface heavy rainfall. These contrast to previously documented inner rainbands, where warm-rain processes are the predominant pathway of particle growth.

引用

页码：2147 / 2159

页数：13

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