摘要
利用京津塘高速公路沿线5个气象站（北京、武清、北辰、东丽和塘沽）1971～2006年的地面观测资料分析发现,近36年该高速公路沿线的大雾日数呈微弱下降趋势,具有明显的年际、季节、日变化特征和地域差异;秋、冬季是大雾多发期,大雾持续时间多数为8 h,且冬季大雾有越靠近沿海雾日越多的特征;同时,还发现京津塘高速公路出现辐射雾的几率明显多于平流雾。在此分析的基础上,探讨了雾天气对交通安全的影响及控制策略。
The analysis on the data of 5 meteorological stations （ Beijing, Wuqing, Beichen, Dongli and Tanggu） along Jing-Jin-Tang expressway from 1971 to 2006 shows that the dense fog days along Jing-Jin-Tang expressway in recent 36 years indicates a declining trend, with obvious inter-annual, seasonal, daily and regional changes. Autumn and winter are the frequent periods of dense fog. The most of dense fogs last about 8 hours. It is of characteristics that dense fog days are more in winter in coast areas than that of other area. At the same time, the probability of radiation fog is more than advection fog along Jing-Jin-Tang expressway. Base on the analysis, the strategy for controlling the influences of fogs to traffic is discussed.
出处
《灾害学》
CSCD
2008年第3期48-53,共6页
Journal of Catastrophology
基金
国家科技部项目之一“影响城市群高速路安全的高危险天气预报系统”子专题--“京津塘高速公路沿线高危险天气的气候特征与数值释用方法研究“资助(2005DIB3J09)
关键词
高速公路
大雾
气候特征
交通安全
影响
expressway
dense fog
climatic characteristics
traffic safety
influence
