A Numerical Study of the Impact of Vertical Shear on the Distribution of Rainfall in Hurricane Bonnie (1998)
A Numerical Study of the Impact of Vertical Shear on the Distribution of Rainfall in Hurricane Bonnie (1998)
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DOI：
10.1175//2546.1
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发表时间：
2003-08
影响因子：
3.2
通讯作者：
R. Rogers;Shuyi S. Chen;J. Tenerelli;H. Willoughby
中科院分区：
文献类型：
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作者：
R. Rogers;Shuyi S. Chen;J. Tenerelli;H. Willoughby
摘要 尽管登陆时热带气旋带来的暴雨造成了重大影响，但定量降水预报（QPF）仍然是一个尚未解决的问题。改善热带气旋 QPF 的一项关键任务是了解影响风暴周围降雨强度和分布的因素。其中包括风暴运动、地形和海岸方向，以及与环境流的相互作用。这些效应的结合可以产生近轴对称或高度不对称的降雨分布，以及降雨量范围从 1 或 2 厘米到 >30 厘米。本研究通过飓风邦尼（1998）的数值模拟来研究风暴与其环境流之间的相互作用，重点关注垂直风切变在控制降雨方位角变化中的作用。该模拟使用高分辨率非静水力第五代宾夕法尼亚州立大学-NCAR 中尺度模型 (MM5) 来模拟 0000...
Abstract Despite the significant impacts of torrential rainfall from tropical cyclones at landfall, quantitative precipitation forecasting (QPF) remains an unsolved problem. A key task in improving tropical cyclone QPF is understanding the factors that affect the intensity and distribution of rainfall around the storm. These include the storm motion, topography, and orientation of the coast, and interactions with the environmental flow. The combination of these effects can produce rainfall distributions that may be nearly axisymmetric or highly asymmetric and rainfall amounts that range from 1 or 2 cm to >30 cm. This study investigates the interactions between a storm and its environmental flow through a numerical simulation of Hurricane Bonnie (1998) that focuses on the role of vertical wind shear in governing azimuthal variations of rainfall. The simulation uses the high-resolution nonhydrostatic fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5) to simulate the storm between 0000...