甘肃陇东地区2017年2月19-21日强降雪天气成因及影响分析  

Analysis on the Causes and Effects of Heavy Snowfall in Longdong Region of Gansu Province from February 19 to 21,2017

作　　者：常臻 CHANG Zhen(Pingliang Meteorological Bureau,Pingliang,Gansu 744000)

机构地区：[1]平凉市气象局,甘肃平凉744000

出　　处：《现代农业研究》2020年第7期27-28,共2页Modern Agriculture Research

摘　　要：对甘肃陇东2017年2月19-20日强降雪天气成因分析得出,此次强降雪是在高空槽、冷锋、南支槽、西南急流等有利的天气系统影响下产生的,水汽通量散度、散度场等物理量变化对应降雪天气发生发展,引发该地区暴雪天气。Based on the analysis of the causes of heavy snowfall in longdong,gansu province on February 19-20,2017,it is concluded that the heavy snowfall was generated under the influence of favorable weather systems such as high altitude trough,cold front,south branch trough,southwest jet stream,etc.,the variation of moisture flux divergence,divergence field and other physical quantities correspond to the development of snowfall weather,causing blizzard weatherin this region.

关 键 词：强降雪 环流形势 水汽通量散度 散度场 

分 类 号：P426.634[天文地球—大气科学及气象学]