【作者】 王金兰； 寿绍文； 刘泽军； 王新红； 田春娜；

【Author】 Wang Jinlan1,2,Shou Shaowen1,Liu Zejun3 ,Wang Xinhong1,2 ,Tian Chunna2 (1. Jiangsu Key Laboratory of Meteorological Disaster,Nanjing University of Information Science & Technology, Nanjing 210044; 2. Xinxiang Meteorological Bureau,Henan, 453003; 3. Guangxi Institude of Meteorology and Disaster-reducing Research)

【机构】 南京信息工程大学江苏省气象灾害重点实验室； 广西气象减灾研究所； 新乡市气象局；

【摘要】 应用非静力平衡中尺度模式MM5及NCEP资料和高空地面资料,模拟分析了2006年1月28日发生在河南省的一次大雾天气过程,结果发现:雾体最强的时段是在日出后的1-2h内,相对湿度下降的拐点滞后于气温回升的拐点2h左右;先出现贴地逆温再出现大雾,逆温最强的时段也是雾体最强的时段,逆温层顶始终覆盖在雾体上方;近地面的微风和风向的转变,有利于雾体的形成和向上发展,风向转变的时间也是雾体形成的时间;增温、减湿和逆温层的破坏是大雾消散的主要原因。更多还原

【Abstract】 This paper presents results of simulations for a case of heavy fog that occurred in January 2007 in Henan province using the fifth generation Penn state/NCAR mesoscale model(MM5).The model result show the major observed features of these events as well as the associated mesoscale system.;The time of the most heavy was behind sunrise about 1-2 hour, the turning point of humidity was behind temperature’s about 2 hours; It was earlier that inversion layer appeared than heavy fog, the most inversion was consistent with the most heavy fog, and the inversion layer was above the fog; the change of ground layer’s wind direction was favorable the heavy fog appearing and growing; the major reason of heavy fog vanishing was increased temperature, reduced humidity and destroyed inversion layer.更多还原