INVESTIGATION ON GEOSTROPHIC ADJUSTMENT,FRONTOGENESIS AND OSCILLATIONS  

作　　者：PAN Yinong(潘益农) WU Rongsheng(伍荣生) 

机构地区：[1]The Key Laboratory of Mesosacle Severe Weather, Department of Atmospheric Sciences,Nanjing University, Nanjing 210093 The Key Laboratory of Mesosacle Severe Weather, Department of Atmospheric Sciences,Nanjing University, Nanjing 210093

出　　处：《Acta meteorologica Sinica》2001年第3期346-355,共10页

基　　金：This research was supported by the National Natural Science Foundation of China under Grants:49675259 and 49735180;The National Key Basic Research Development Program:CHERES

摘　　要：Geostrophic adjustment and frontogenesis are examined by means of the 2-D ARPS model. The simulation shows that.without the large-scale forcing,both the frontogenesis and frontolysis are observed during the geostrophic adjustment process and the intensity of the front oscillates in the case of no discontinuity.The convergence (divergence) induced by the secondary circulation is the most important factor for frontogenesis (frontolysis) at the top and bottom boundaries.The amplitude and period of oscillation are dependent on the initial atmospheric stratification and the Coriolis frequency,and they are related to the inertio-gravity wave.Geostrophic adjustment and frontogenesis are examined by means of the 2-D ARPS model. The simulation shows that.without the large-scale forcing,both the frontogenesis and frontolysis are observed during the geostrophic adjustment process and the intensity of the front oscillates in the case of no discontinuity.The convergence (divergence) induced by the secondary circulation is the most important factor for frontogenesis (frontolysis) at the top and bottom boundaries.The amplitude and period of oscillation are dependent on the initial atmospheric stratification and the Coriolis frequency,and they are related to the inertio-gravity wave.

关 键 词：geostrophic adjustment frontogenesis and frontolysis inertio-gravity oscillation 

分 类 号：P4[天文地球—大气科学及气象学]