湖北一次飑线天气过程对流发展机制分析  

Analysis on Ambient Condition and Initialization Mechanism of Convection in a Severe Squall Line Storm Event in Hubei

作　　者：尹恒[1] 沈定成[1] 夏金[1,2] 李易[1] 杨占婷[1,3] 廖小华[1] 

机构地区：[1]湖北省十堰市气象局,十堰442000 [2]湖北省气象局,武汉430074 [3]湖北省气象服务中心,武汉430074

出　　处：《气象科技进展》2014年第1期55-59,共5页Advances in Meteorological Science and Technology

摘　　要：利用常规气象观测、区域加密自动站、FY-2E卫星、多普勒天气雷达及组网产品等资料,对2011年7月下旬发生在湖北省的一次大范围雷雨大风天气过程进行分析,探讨了强对流天气产生的天气学条件和物理机制。结果表明:雷雨大风是高空槽、切变线、低空急流与河套南下冷空气相互作用的结果,西太平洋副热带高压西侧的偏南气流为雷雨大风提供了水汽和能量输送,卫星和雷达监测反映出中尺度对流体生消发展中有多个较小尺度对流体新生和发展,雷雨大风出现在中尺度云团前端及强回波地区。By using the conventional meteorological observation, regional automatic station, FY-2E satellites, Doppler radar andnetworking products such as data, the thunderstorm weather process which occurred in Hubei Province on a large scale is analyzed, andthe causes of convective weather conditions and physical mechanism are discussed. The results show that the thunderstorm gale is dueto the upper trough, shear line, low-level jet and the cold air southward interaction results. The southerly airflow on the west side of WestPacific subtropical high provided the water vapor and energy transport for thunderstorm gale. Satellite and radar monitoring reflects aplurality of a small scale on the generation. The development of mesoscale convective fluid body dissipation development, in effect, isa thunderstorm. The thunderstorm appears in the mesoscale-cloud-cluster front end and the strong echo area, strong weather of deepconvective index and convective inhibition energy high value area, located in the upstream of strong convective weather which occurred.

关 键 词：雷雨大风 天气学条件 稳定度 

分 类 号：P458.12[天文地球—大气科学及气象学]