摘要
对2004年11月30日至12月4日入冬以来中国东部最大范围的大雾天气过程,从大气环流形势背景及其调整和演变,天气气候背景,大气层结条件,近地面水汽条件等方面进行了分析,结果表明:此次大雾是在大气低层暖平流、大气层结相对稳定和充沛的水汽条件下产生的,雾的消散需要雾区有冷空气入侵,出现大风降温天气。
The large range rare fog process which occurred in East China from November 30 to December 4 in 2004 was analyzed, including the circulation background, its adjustment and evolvement, the climatic background, the atmospheric stratification condition and the vapor condition near surface, etc. Results show that the warm advection at the low level, the stable atmospheric stratification and the abundant vapor condition resulted in this rare fog process, and fog dissipation needs the cold air invasion with the cold front.
出处
《干旱气象》
2006年第3期47-51,共5页
Journal of Arid Meteorology
基金
甘肃省科技厅项目"甘肃省高等级公路建设
营运及道路安全
天气气候保障系统"(2GS042-B44-018)资助
关键词
大雾
中国东部
大气层结
天气分析
thick fog
East China
atmospheric stratification
synoptic analysis
