余晖. 1999. 斜压大气中环流非对称结构与台风移速关系的数值研究[J]. 气象学报, 57(6):694-704, doi:10.11676/qxxb1999.067
斜压大气中环流非对称结构与台风移速关系的数值研究
A NUMERICAL STUDY ON THE RELATIONSHIP BETWEEN THE ASYMMETRIC STRUCTURE AND MOVING VELOCITY OF TYPHOON IN BAROCLINIC ATMOSPHERE
投稿时间:1997-12-22  修订日期:1998-09-01
DOI:10.11676/qxxb1999.067
中文关键词:  斜压  台风  移动  非对称结构  数值试验
英文关键词:Baroclinity  Typhoon  Motion  Asymmetric structure  Numerical study
基金项目:上海台风研究所所基金
作者单位
余晖 上海台风研究所, 上海 200030 
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中文摘要:
      采用4层准地转斜压模式,在无环境气流的情况下,进行了两次数值试验,研究了台风环流不同方位、不同半径处的非对称程度与其中心移速的关系,以及不同层次台风环流的非对称结构与台风移速的相关性。结果表明:(1)距台风环流中心100~300km的东-西向和东北-西南向非对称程度与其东西向移速有稳定的强负相关,200~500km的东南一西北向非对称程度与其南北向移速有稳定的强正相关。(2)模式最下层环流的非对称结构与台风移速的关系最密切。在该层,距中心100~400km的东-西向和东北-西南向非对称程度与台风沿东西向移速密切相关,100km以外的东南一西北向非对称程度与台风沿南北向移速密切相关。
英文摘要:
      A quasi-geostrophic baroclinic model is used to study the correlation between the asymmetric structure and moving velocity of typhoon.Results show that:1) the moving velocity of typhoon in west-east direction is negatively interrelated to the asymmetry in west-east and southwest-northeast direction at a distance of 100 km to 300 km away from typhoon center,while the moving velocity in north-south direction has a strong positive relationship with the asymmetry in northwest-southeast direction at a distance of 200 km to 500 km away from the center;2)asymmetry of the lowest level circulation is the highest correlated to typhoon's moving velocity.
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