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大气科学  2007 

暴雨激发和维持的正、斜压强迫机制的理论研究

DOI: 10.3878/j.issn.1006-9895.2007.02.10

Keywords: 暴雨天气,散度演化,正压非平衡强迫,热动力耦合强迫

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Abstract:

针对暴雨天气的发生、发展都伴随着对流层中低层有很强的气流与水汽辐合持续的天气事实,摒弃传统研究中把散度方程局限于水平动力方程约束的观念,从湿斜压原始方程出发,导出了包含热、动力耦合强迫作用的散度演化方程,揭示了正压大气非平衡强迫和湿斜压大气热、动力耦合强迫在暴雨激发和维持中的重要作用,阐明了持续性暴雨过程中对流层中低层强烈的气流与水汽辐合长时间维持的动力机制。

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