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庄荫模, 徐玉貌, 程箴荣. 华南前汛期低空西南急流-锋面暴雨过程初期的中—中间尺度波状降水过程[J]. 大气科学, 1985, 9(2): 148-155. DOI: 10.3878/j.issn.1006-9895.1985.02.05
引用本文: 庄荫模, 徐玉貌, 程箴荣. 华南前汛期低空西南急流-锋面暴雨过程初期的中—中间尺度波状降水过程[J]. 大气科学, 1985, 9(2): 148-155. DOI: 10.3878/j.issn.1006-9895.1985.02.05
Zhuang Yinmo, Xu Yumao, Cheng Zhenrong. The meso-intermediate scale wavelike precipitation process at the beginning of the low level southwest jet-front heavy rain process during the pre-flood season in South China[J]. Chinese Journal of Atmospheric Sciences, 1985, 9(2): 148-155. DOI: 10.3878/j.issn.1006-9895.1985.02.05
Citation: Zhuang Yinmo, Xu Yumao, Cheng Zhenrong. The meso-intermediate scale wavelike precipitation process at the beginning of the low level southwest jet-front heavy rain process during the pre-flood season in South China[J]. Chinese Journal of Atmospheric Sciences, 1985, 9(2): 148-155. DOI: 10.3878/j.issn.1006-9895.1985.02.05

华南前汛期低空西南急流-锋面暴雨过程初期的中—中间尺度波状降水过程

The meso-intermediate scale wavelike precipitation process at the beginning of the low level southwest jet-front heavy rain process during the pre-flood season in South China

  • 摘要: 在华南前汛期低空西南急流一锋面暴雨过程的初期.存在着一种自西南向东北方向传播的中尺度波状雨带或中到中间尺度的波状雨区.波状雨区的波长为20—100公里左右,传播速度为20—45公里/小时,对应的降水周期为1—4小时.波状雨区出现在500百帕槽前、850百帕冷切变线南面和地面锋面的暖区,以及850百帕冷切变南侧低空西南急流移近、加强的过程中.估计这种波状降水可能是暴雨过程中1—4小时的周期性强非地转西南风风速脉动造成的辐合或重力波触发产生的.中尺度波状雨区的持续旺盛发展可能产生新的中到中间尺度雨成冷性切变线雨带,形成强降水和第一个暴雨区.

     

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