Abstract：Based on the FNL 0.25°×0.25°reanalysis data every 6 hours,encrypted automatic weather station,airport automatic observation data and radar data,this paper analyzes the characteristics and causes of thunderstorm gale at Urumqi Airport on June 5,2020.The results show that it lasts for a short time,but has a large effect.Before the thunderstorm gale,during and at the late stage of thunderstorm gale,a strong horizontal wind shear of runway is generated,especially in the early and late periods,which is extremely harmful to flight.Under the background of the west Siberian vortex splitting trough moving southeastward,the low-level warm moist advection accumulates a large amount of unstable energy,forming the unstable stratification and circulation background favorable for the development of strong convection.A large amount of convective available potential energy is accumulated over the airport,and the atmosphere is in a strong unstable state,which is very easy to produce strong convective weather.Under the combined action of large-scale forced uplift and low-level shear convergence,this thunderstorm gale weather is triggered,and the surface mesoscale convergence line promotes the further development and maintenance of convective cloud clusters.
杜安妮, 陈阳权. 乌鲁木齐机场1次短时雷雨大风天气特征及成因分析[J]. 气象水文海洋仪器, 2021, 38(4): 59-62.
Du Anni, Chen Yangquan. Weather characteristics and cause analysis of a short-term thunderstorm gale at Urumqi Airport. Meteorological Hydrological and Marine Instrument, 2021, 38(4): 59-62.
2021, Vol. 38 
