济南机场初冬一次连续性大雾过程分析  

Analysis of a Continuous Heavy Fog Process at Jinan Airport in Early Winter

作　　者：王光辉 WANG Guang-hui(Jiyang District Meteorological Bureau,Jinan,Shandong 251400)

机构地区：[1]济南市济阳区气象局,山东济南251400

出　　处：《农业灾害研究》2021年第7期91-92,94,共3页Journal of Agricultural Catastrophology

摘　　要：结合天气形势、物理量场,再利用地面气象观测资料、GDAS资料、NCEP再分析资料和轨迹分析方法,详细分析济南机场2019年12月7—10日的持续性大雾天气。结果表明:此次大雾是在稳定大尺度天气背景下发生的。持续性大雾形成有以下几个主要原因:地面辐射冷却和低层冷暖平流有利于维持大雾天气;低层弱上升运动配合中层的弱下沉运动有利于大雾的维持和发展;大雾的主要水汽来源于近低层偏南气流的水汽输送,比例高达61%,西北气流输送的水汽较少,主要是其表征短波槽后的冷平流及高压前部的弱冷空气是一支干冷的辐散下沉气流。Combined with the weather situation and physical quantity field, and using the ground meteorological observation data, GDAS data, NCEP reanalysis data and trajectory analysis method, the continuous heavy fog weather of Jinan airport from December 7 to 10, 2019 is analyzed in detail. The results show that the heavy fog occurred under the background of stable large-scale weather. There are several main reasons for the formation of persistent heavy fog: ground radiation cooling and low-level cold and warm advection are conducive to maintaining heavy fog weather;The weak ascending movement in the lower layer and the weak sinking movement in the middle layer are conducive to the maintenance and development of heavy fog;The main water vapor of the fog comes from the water vapor transportation of the South air flow in the near lower layer, accounting for 61%, while the water vapor transported by the northwest air flow is less, mainly because it indicates that the cold advection behind the short wave trough and the weak cold air in front of the high pressure are a dry and cold divergent downdraft.

关 键 词：持续大雾 逆温层 HYSPLIT模式 

分 类 号：P458[天文地球—大气科学及气象学]