Analyses of Surface Fronts During TAMEX

山洪灾害是全球性的重大气象灾害。理解这一现象是一个具有挑战性的问题，因为有必要了解运动尺度上的复杂动态和微物理过程，这些运动尺度比传统气象网络通常测量的要小。这种运动尺度被气象学家称为风暴尺度或中尺度。​1987年春举行了一个名为台湾地区中尺度试验（TAMEX）的主要实地项目。该项目由台湾各机构共同努力，国家海洋和大气管理局和国家科学基金会（NSF）也参与其中。科学目标是研究在被称为梅雨锋的准静止和一致的特征上形成的中尺度系统，并导致被称为“梅雨”的暴雨。在NSF之前的奖励下，首席研究员参与了TAMEX的现场阶段，并开始分析数据。初步结果表明，梅雨锋面形成、增强和维持的重要机制可能与以前认为的有所不同。利用飞机、雷达、地面和高空数据，首席研究员将继续对锋面系统的结构及其产生的强降雨事件进行诊断研究。//

Flash floods are major meteorological disasters which occur around the globe. Understanding of this phenomenon is a challenging problem because it is necessary to understand both complex dynamic and microphysical processes at scales of motion that are smaller than typically measured by conventional weather networks. This scale of motion is termed storm-scale or mesoscale by meteorologists. The National Science Council of Taiwan established a Multiple Hazards Mitigation Project whose meteorological component focussed on improving flash flood predictions. A major field project, entitled the Taiwan Area Mesoscale Experiment (TAMEX), was held in the Spring of 1987. The project was a joint effort of various Taiwanese agencies with participation from the National Oceanic and Atmospheric Administration and the National Science Foundation (NSF). The scientific goals were to study the mesoscale systems that form on a quasi-stationary and consistent feature known as the Mei-Yu front and cause the heavy rains known as the "plum rains". Under a previous award from NSF the Principal Investigator participated in the field phase of the TAMEX and began analysis of the data. Preliminary results indicate that the mechanisms important for the formation, intensification and maintenance of the Mei-Yu front may be somewhat different than previously thought. Using aircraft, radar, surface and upper air data, the Principal Investigator will continue his diagnostic studies of the structure of the frontal systems and the severe rain events that they spawn. //