台风“烟花”缓慢移动的机理研究:远距离双台风相互作用  

Numerical study on the mechanisms of slow-moving Typhoon"In-fa"(2106):interaction of binary typhoons with a far distance

作　　者：刘开源 戴竹君 姜有山 黄绮君 葛旭阳[1] LIU Kaiyuan;DAI Zhujun;JIANG Youshan;HUANG Qijun;GE Xuyang(Key Laboratory of Meteorological Disaster,Ministry of Education,Joint International Research Laboratory of Climate and Environment Change,Nanjing University of Information Science&Technology,Nanjing 210044,China;Key Laboratory of Transportation Meteorology,China Meteorological Administration,Nanjing 210009,China;Nanjing Meteorological Bureau,Nanjing 210019,China)

机构地区：[1]南京信息工程大学气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室,南京210044 [2]中国气象局交通气象重点开放实验室,南京210009 [3]南京市气象局,南京210019

出　　处：《气象科学》2024年第2期308-316,共9页Journal of the Meteorological Sciences

基　　金：国家自然科学基金资助项目(U2342202,42175003);江苏省气象局面上资助项目(KM202207);江苏省气象局青年基金资助项目(KQ202314)。

摘　　要：本文通过一系列敏感性试验探究台风"烟花"移动缓慢的可能机理。结果表明:台风"烟花"的移动对台风"尼伯特"的强度较为敏感。"尼伯特"强度主要通过影响其附近大尺度低压系统的强度与范围,间接影响"烟花"的大尺度引导气流,进而影响"烟花"的移动。具体而言,"尼伯特"与其附近大尺度低压系统环流共同激发西北风引导气流,抵消了部分副高西南侧的东南风引导气流,从而造成"烟花"受到的大尺度引导气流偏弱,致使其移动缓慢,路径复杂。此外,当"尼伯特"强度越大时,以上过程对"烟花"移动的影响也越大。因此,当两个台风相距较远时,双台风相互作用可能通过影响周围的大尺度系统,间接对台风路径产生较大影响。This study employed a series of sensitivity experiments to investigate the potential mechanisms of the slow movement of Typhoon"In-fa".The findings show that the movement of Typhoon"In-fa"is influenced by the intensity of Typhoon"Nepartak".The intensity of"Nepartak"mainly affects the strength and range of the nearby large-scale low-pressure system,indirectly affecting the large-scale guiding airflow of"In-fa"and then affects its movement.In particular,the northwest wind-steering flow generated by"Nepartak"and low-pressure system partially neutralizes the southeast wind-steering flow on the southwest side of the subtropical high.This neutralization leads to the reduction in the large-scale steering flow of"In-fa",resulting in its slow movement and a complex track.Moreover,the study points out that the stronger"Nepartak"is,the greater its influences on movement of"In-fa"are.Results emphasize that interaction between distant typhoons can indirectly affect typhoon tracks by influencing the large-scale systems in its vicinity.

关 键 词：台风“烟花” 移动速度 双台风 引导气流 

分 类 号：P444[天文地球—大气科学及气象学] P458.124