摘要
利用常规观测资料、NCEP/NCAR再分析资料对2006—2010年辽宁地区的寒潮天气过程进行统计分析,并按冷空气路径将影响辽宁地区的寒潮天气划分为3种,即东北路径、西北路径和偏西路径,重点研究东北路径冷空气对辽宁地区的影响。结果表明,影响辽宁地区的东北路径寒潮冷空气从源地到达中西伯利亚后堆积加强,后经内蒙东部或黑龙江地区南下到辽宁,造成辽宁的区域性寒潮天气。从环流形势上来看,东北路径寒潮天气中横槽型占较大比例,其次为小槽发展型。
Based on general observation data and NCEP/NCAR reanalysis data during 2006 to 2010,the general features of the cold wave in Liaoning area were analyzed. The cold wave paths in Liaoning area were divided into three paths,which were northeast path,northwest path and westerly path ,and the northeast path were further discussed.The cold air was from the source southward through central and eastern Inner Mongolia to Liaoning area and caused regional cold weather in Liaoning area after the accumulation and strengthen in West Siberia. The pattern of Lateral grooves accounted for a large proportion in the circulation situation, followed by the pattern of small trough developed.
出处
《现代农业科技》
2015年第19期274-277,共4页
Modern Agricultural Science and Technology
