Analysis on a Severe Hail Weather Occurred in Western Talimu Basin of Southern Xinjiang
Based on routine meteorological data,CINRAD/CC Doppler radar data and numerical model,a severe hail weather process occurred in Maigaiti area of western Talimu basin in southern Xinjiang on 17 June,2011 was analyzed.The results show that the hail weather was triggered by the beneficial vertical atmospheric circulation pattern and the unstable atmosphere stratification.The typical echo characteristics of hail cloud,such as hook echoes,weak echo regions,suspended echoes and mesocyclones,were significant on the radar chart,which may be regarded as an indicator for hailstorm forecasting.In addition,the numerical simulation show that the hail cloud had the vertical structure with convergence at the low level,a pair of vortex at the middle level,and divergence at the upper level.The space allocation was in favor of the developing and maintaining of hail clouds.
severe hailcirculation patternvault echoesmesoscale vortexnumerical simulation
NETL
NSTL
万方数据
维普
