摘要
利用一次较成功地模拟了“96.1”青藏高原东北部暴雪过程的 MM4中尺度模式输出资料 ,用非线性横波型不稳定模式对“96.1”暴雪发生发展过程的动力学机制进行了数值试验 ,结果指出 :横波型不稳定的分布和演变与暴雪切变线的发生发展过程相当一致 ,说明横波型不稳定是这次暴雪过程的一种动力学机制 .
Using the output data of an MM4 mesoscale numerical model which fairly well simulated the developing structure and the evolution of the “96.1” snowstorm event over the Qinghai Xizang Plateau, a nonlinear transversal wave instability model and simulation system is developed to validate the formation mechanism of the snowstorm process. The results show that the fields of vertical velocity are coincident with not only with those of the streamfunction, but also with the observations. It indicates that the transversal wave instability is substantially a formation mechanism for the occurrence of the “96.1” snowstorm.
出处
《应用气象学报》
CSCD
北大核心
2000年第4期392-392,共1页
Journal of Applied Meteorological Science
基金
国家自然科学基金资助项目!:4 97752 71
