Moist Potential Vorticity Anomaly with Heat and Mass Forcings in Torrential Rain Systems

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（6）
• 页码范围: 878-880
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

The moist potential vorticity (MPV) equation is derived from complete atmospheric dynamic equations with both heat and mass forcings, with which the impermeability theorem of the "MPV substance" is proven. It is clarified that both heat and mass forcings induced by the intensive precipitation in torrential rain systems can lead to the MPV anomaly. The MPV substance anomaly is a dynamical tracer for tracking a torrential rain system.