Non-equilibrium Vibration and Diagnosis Analysis of A Rainstorm  

一次暴雨过程的非平衡振动与诊断分析(英文)

作　　者：张驹[1,2] 谯捷[2] 周天华[2] 周春花[3] 

机构地区：[1]成都高原气象研究所,四川成都610072 [2]四川省气象局科技与预报处,四川成都610072 [3]四川省气象台,四川成都610072

出　　处：《Meteorological and Environmental Research》2010年第12期14-17,共4页气象与环境研究（英文版）

基　　金：Supported by Sichuan Meteorology Subject Fund(2010-Youth-02)~~

摘　　要：The rainstorm weather from July 15,2010 to July 18,2010 is researched by diagnosis analysis method.The results suggest that in the strong and lasting period,the upward air current in the basin is prevail and is above 300 hPa.The convergence layer during strong rainstorm period is not thick.The convergence movement of air current is under 500 hPa.In this rainstorm process,the positive vortex maximum value center of the lower layer of convection layer is perfectly corresponding to rainstorm zone.The air current convergence and divergence intensity is one magnitude larger than the turning intensity.Flux plays a leading role in the system changes process;the non-equilibrium value of the low layer of convection layer during the strong rainstorm period U<0.Strong non-equilibrium is favorable for the movement of convergence.The non-equilibrium value of the high layer of convection layer U>0,and it stimulates the divergence movement of high layer.The divergence of high layer pushes the convergence of the lower layer and thus forms strong upward movement.The rainstorm weather from July 15,2010 to July 18,2010 is researched by diagnosis analysis method.The results suggest that in the strong and lasting period,the upward air current in the basin is prevail and is above 300 hPa.The convergence layer during strong rainstorm period is not thick.The convergence movement of air current is under 500 hPa.In this rainstorm process,the positive vortex maximum value center of the lower layer of convection layer is perfectly corresponding to rainstorm zone.The air current convergence and divergence intensity is one magnitude larger than the turning intensity.Flux plays a leading role in the system changes process;the non-equilibrium value of the low layer of convection layer during the strong rainstorm period U<0.Strong non-equilibrium is favorable for the movement of convergence.The non-equilibrium value of the high layer of convection layer U>0,and it stimulates the divergence movement of high layer.The divergence of high layer pushes the convergence of the lower layer and thus forms strong upward movement.

关 键 词：NON-EQUILIBRIUM RAINSTORM FLUX China 

分 类 号：P458.121.1[天文地球—大气科学及气象学]