热带气象学报2024，Vol.40Issue(2)：189-197,9.DOI:10.16032/j.issn.1004-4965.2024.018
基于组网多普勒雷达径向速度场的福建近海台风中心定位研究
Offshore Tropical Cyclone Locating Method for Fujian Based on Network Doppler Radial Velocity Field
摘要
Abstract
This paper discussed a novel method for locating the center of offshore tropical cyclones in Fujian using the zero velocity line(or zone)in the radial velocity field of networked Doppler radars.This method was based on the fact that the typhoon center is invariably located on the zero velocity line(or zone),as depicted in the radar's radial velocity diagram.The intersection(or the vicinity of the intersection)of the zero velocity line of two or more Doppler radars was identified as the typhoon center.The results showed that this method has high spatial and temporal resolution,and the locations identified are basically consistent with the results from the China Meteorological Administration,thus providing valuable insights for real-time typhoon positioning and forecasting.This method provides a feasible way to navigate the challenges posed by the irregularity of typhoon reflectivity echo shape and velocity ambiguity,enabling quick and accurate positioning of the typhoon's center as it approaches or makes landfall.关键词
台风中心定位/多普勒雷达/组网/径向速度/零速度线Key words
typhoon positioning/Doppler radar/networking/radial velocity/zero velocity line分类
天文与地球科学引用本文复制引用
苏源,倪悦,曾凡辉,张深寿..基于组网多普勒雷达径向速度场的福建近海台风中心定位研究[J].热带气象学报,2024,40(2):189-197,9.基金项目
福建省气象局开放式研究基金项目(2020K07)资助 （2020K07）
