饱和湿大气Brunt-Visl频率及修正的相当位温

被引：7

作者：

刘栋

高守亭

机构：

[1] 中国科学院大气物理研究所

来源：

气象学报 | 2003年 / 03期

关键词：

饱和湿空气; Brunt-Visl频率; 相当位温;

D O I：

暂无

中图分类号：

P434 [大气环流];

学科分类号：

摘要：

实际大气中受扰动的饱和气块发生凝结后 ,凝结水会部分脱离气块。以前研究饱和湿大气的Brunt V is l 频率 (N2 m)没有考虑凝结水的部分脱离 ,相当位温 (θe)也忽略了饱和气块的混合比的作用。文中针对这些不足 ,在假设饱和空气中只存在气液转换条件下 ,推导出液态水部分脱离气块的、更符合实际情况的N2 m 表达式和修正的饱和湿大气θe 表达式。新的N2 m 表达式增加了部分脱离气块的液态水的作用项 ,新的θe 表达式中包含有饱和气块的混合比 ,并对有关的表达式分别作了讨论和比较

引用

页码：379 / 383

页数：5

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