滨州市两次大雾天气过程的总结分析  

Study on Two Heavy Fog Processes of Binzhou City

作　　者：刘德安 王凤娇 刘慧 徐玲玲 

机构地区：[1]山东省博兴县气象局,山东博兴256500 [2]山东省滨州市气象局,山东滨州256612 [3]山东省无棣县气象局,山东无棣251900

出　　处：《安徽农业科学》2014年第4期1117-1120,1131,共5页Journal of Anhui Agricultural Sciences

摘　　要：利用多种常规观测资料对滨州市2011年12月3-7日和2012年3月16-17日2次大雾天气过程进行分析，探讨了大雾天气产生的环流形势及其形成的大气层结特征、垂直运动特征、温湿条件等。结果表明，稳定的环流形势及地面较弱的气压场是大雾形成的有利天气形势；风力小，空气湿度大，有利于雾的形成；低层西南气流是大雾形成并维持的主要水汽来源；近地层形成逆温层，使大气层结处于稳定状态，是大雾形成和维持的重要条件；低层垂直运动较弱，对水汽的扩散不利，有利于雾的维持。A variety of routine observations was used to analyze the process of the two heavy fog of Binzhou City on December 3 to 7, 2011 and March 16 to 17, 2012, and discuss the circulation situation of the fog formation, the characteristics of its atmospheric stratification, verti- cal motion characteristics, including temperature and humidity conditions. The results showed that stable circulation situation and weak ground pressure field is favorable weather situation for fog formation ; Small wind and higher air humidity is conducive to the formation of fog; The low- level southwesterly flow is the main source of water vapor for fog to form and maintain; Inversion layer near the ground makes atmospheric stratification in a stable state. It is an important condition for fog formation and maintenance ; The weaker vertical movement near the ground a- gainst the diffusion of water vapor. However, it is conducive to the maintenance of fog.

关 键 词：大雾 环流形势 垂直运动 温湿条件 层结特征 滨州市 

分 类 号：S161.5[农业科学—农业气象学]