摘要
利用常规观测资料,从环流形势、物理量场和雷达资料等方面,对2016年7月19—20日发生在济南地区的暴雨天气过程进行综合分析,并对其数值预报进行了检验。结果表明,这是一次由低涡、切变线、低空急流和黄淮气旋共同作用产生的暴雨。暴雨过程发生在气旋暖区,为层状云和积状云混合云降水,降雨范围大、效率高;对流性的特征仅表现为短时强降水,雨量分布相对于单纯的积云降雨更均匀。数值模式对此次过程的强降雨时段的预报普遍较好,但由于预报的气旋路径较实况更偏东,造成降雨量级上大多偏大。
According to the rainstorm weather process occurred in July 19 -20, 2016 in Jinan area, using conventional observational data, the circulation situation, physical quantity fields and radar data were comprehensively analyzed, and numerical prediction was tested. The results showed that： the rainstorm was interaction of vortex, shear line, low jet flow and Huang-Huai cyclone. The rainstorm process occurred in the warm zone of the cyclone, which is mixed cloud precipitation of stratiform cloud and cumuliform cloud; The characteristics of convective only showed short-term strong precipitation, rainfall distribution was more uniform compared with cumulus precipitation. Numerical model for the prediction of heavy rain periods was generally good, but because of the forecast cyclone was more easterly, most of the precipitation forecast was too large.
作者
刘新彦
褚颖佳
王华
赵玉翠
张悦
LIU Xin-yan CHU Ying-jia WANG Hua et al(Jiyang Meteorological Bureau, Jiyang, Shandong 251400 Jinan Meteorrological Bureau, Jinan, Shandong 250102)
出处
《安徽农业科学》
CAS
2017年第6期200-204,共5页
Journal of Anhui Agricultural Sciences
关键词
暴雨
环流形势
物理量场
雷达资料
Rainstorm
Circulation situation
Physical quantity field
Radar data
