华南沿海暖区暴雨系统研究进展
The Research Progress of the Systems of Warm-Sector Heavy Rainfall in South China Coasts
中文摘要：
重点介绍了活跃在华南沿海暖区暴雨系统的研究和进展，主要系统为华南沿海暖区两类低层辐合线系统（偏南向低层辐合线与西南向低层辐合线系统）， 以及在华南登陆的中低层暴雨东风波系统。目前研究主要是背景环流下暴雨系统活动空间分区特点，系统分类与追踪、系统基本结构、动力热力及水汽条件特征，环境因子影响的数值模拟，暖区暴雨动力和热力机制数值模拟等方面。综合研究显示，客观判定方法有助于确定暖区暴雨系统，有助于跟踪系统发展过程。暖区暴雨系统的热力发展机制主要是中层潜热释放。环境影响因子包括暖海温和沿海山脉地形对暖区暴雨系统有增强以及位置引导作用。环境因子与系统配置将影响暴雨的位置、强度及持续时间。
中文关键词：
华南沿海地区，暖区暴雨，低层辐合线，暴雨东风波，热动力机制，地形影响
KeyWords：
South China coasts, warm-sector heavy rainfall, convergence lines, rainstorm easterly waves, thermodynamics mechanism, the orographic forcing
Abstract：
The research and progress of the warm-sector heavy rainfall in the south China coasts are introduced here. The main systems are the warm-sector convergence lines (the south convergence line and southwest convergence line) at low level and the landing easterly waves with rainstorm at medium-low level. The research is currently focusing on the features of division areas of the rainstorm system under background circulation, the classifying and detecting of systems, the system structure, the characteristics of the thermodynamics and moisture conditions, and the numerical simulations on environmental factor influence, the dynamic and thermodynamic mechanisms of the warm-sector heavy rainfall, etc. The results show that the objective identification method helps to determine the warm-sector rainstorm systems and to follow their evolution. The latent heat release at the medium level is a main thermodynamic mechanism of the warm-sector rainstorm systems. The environmental factors including the sea surface temperature(SST) and the orographic forcing can increase intensity and lead trajectory to warm-sector rainstorm systems. Furthermore the configuration of influence factors and the systems can impact the intensity, location and duration of the warm-sctor rainstorm.