初夏东亚大尺度低空强西风分支的数值模拟

THE NUMERICAL SIMULATION OF THE BIFURCATION OF THE STRONG LARGE SCALE LOW-LEVEL WESTERLY IN EAST ASIA IN EARLY SUMMER

本文采用p—σ坐标五层原始方程模式模拟出初夏东亚大尺度低空强西风分支的现象.并进一步阐明低空强西风分支及其对应的副热带季风雨带和热带季风雨带形成的物理机制。

The phenomenon of the bifurcation of the strong large scale low-level westerly in East Asia in early summer is simulated with a five -layer primitive equations model. The physical mechanism for forming the bifurcation of the strong low -level westerly and the corresponding subtropical monsoon rain belt and tropical monsoon rain belt is explained further. The simulated results will be beneficial to the fore -casting of the Mei-Yu in the middle-lower reaches of the Yangtze River and pre -cipitation in the South China Sea Waters.