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气象:1993,19(1):3-8
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用多层非线性平衡ω方程分析“91·7”梅雨锋暴雨
(1.空军气象研究所,北京 100085;2.中国气象科学研究院,北京 100081)
The Application of Multi-Level Nonlinear Balanced ω-Equation to the Study of Mei-yu of July, 1991
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中文摘要: 利用多层非线性平衡ω方程,诊断分析了1991年6月29日-7月12日梅雨锋暴雨的特点。结果表明:应用该方程计算出的垂直运动的空间分布与该段梅雨期雨带的位置对应得较好。在诸强迫项中,稳定性凝结加热对这一时段梅雨锋暴雨的贡献最大,而对流凝结加热的作用很小。另外,涡度水平平流的作用小于温度水平平流的作用,而涡度平流垂直变化的作用比较重要。
Abstract:The multi-level nonlinear balanced ω-equation is used to study the Mei-yu from June 29th to July 12th of 1991. The results show that the distribution of the vertical velocity calculated this e-quation can reflect the position of the rain belt properly. The stable condensation heating is the most important factor to the maintenance of the storm rainfall during this period. The horizontal advection of the vorticity is less important than the thermal advection. But the normal advection of the vorticity is important. During this period, the effect of convective condensation heating is very weak.
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引用文本:
杨越奎,刘玉玲,万振栓,吴宝俊,沈文海,1993.用多层非线性平衡ω方程分析“91·7”梅雨锋暴雨[J].气象,19(1):3-8.
,1993.The Application of Multi-Level Nonlinear Balanced ω-Equation to the Study of Mei-yu of July, 1991[J].Meteor Mon,19(1):3-8.