摘要
本文利用钱永甫的五层有地形的原始方程模式,模拟了一次高原低涡的东移过程。发现非绝热因子(辐射、积云对流、大尺度凝结潜热)只影响高原低涡的强度,其中辐射加热对高原低涡强度影响最大。当高原低涡西部有冷槽配合或高原北部45—55°N有高压脊存在时,有利于高原低涡东移。
By using a five-layer primitive equation model with topography, the process in which a vortex moves eastward out of the Qinghai-Xizang Plateau is simulated It is found that diabatic factors, such as radiation, cumulus convection, large-scale condensation latent heat, etc., only influence the intensity of the plateau vortex. Of all the factors, radiative heating is the most important, and the vortex is apt to move eastward when there is a cold trough in the west of the vortex or a high pressure ridge at 45-55°N in the north of the plateau.
出处
《南京气象学院学报》
CSCD
1990年第3期426-433,共8页
Journal of Nanjing Institute of Meteorology
