吴辉碇,樊增全,孙寿全. 1989. 一次暴雨过程大气边界层结构的数值分析[J]. 气象学报, 47(2):227-236, doi:10.11676/qxxb1989.029
一次暴雨过程大气边界层结构的数值分析
NUMERICAL ANALYSIS OF THE PBL STRUCTURE FOR A RAINSTORM CASE
投稿时间:1987-04-06  修订日期:1987-11-28
DOI:10.11676/qxxb1989.029
中文关键词:  
英文关键词:
基金项目:
作者单位
吴辉碇 国家海洋局海洋环境预报中心 
樊增全 北京大学地球物理系 
孙寿全 河北省气象研究所 
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中文摘要:
      1979年7月28日河北唐山地区的强暴雨,10小时总降水量达430mm,降水强度大,从时间和空间上都非常集中.这次太平洋副热带高压北侧暖区发生的强暴雨引起国内气象界的普遍重视.游景炎[1,2],陆一强[3]等对这次暴雨过程的大尺度环境、中尺度结构进行了详细分析并分别讨论了边界层急流、强对流性云团以及地形等的作用.游景炎[2]根据地面天气图的分析,发现明显的雷暴高压和中尺度低压.
英文摘要:
      In the paper, the planetary boundary layer (PBL) structure for the 28 July 1979 Tangshan rainstorm on the north edge of the subtropical high is diagnosed by use of the of the 9-level unequal-interval PBL model. The synoptic scale variables are interpolated to the upper boundary of the model and the observed wind data at the 1500,900,600,300m levels and the surface are utilized. The effects of thermal stratification and baroclinicity on wind distribution in the PBL are taken into account. The dynamic adjustment scheme is applied to get the wind fields at the model levels, The computed wind fields show that there are a clear convergence zo ne and cyclonic circulation in the lower layer of the PBL. The vertical fluxes of momentum, heat and moisture at the surface as well as the fields of vertical motion, vorticity and divergence at all levels are calculated by using the model. It is clear that the results give full details of the thin structure of the PBL and show the effects of topography forcing. And the quality and ability of the used PBL model are furthes checked.
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