高速公路上低能见度的监测与预报  

Monitoring and Forecasting of Low Visibility on Highways

作　　者：袁成松[1] 卞光辉[1] 冯民学[1] 吴震[1] 周曾奎[1] 

机构地区：[1]江苏省气象局,南京210008

出　　处：《气象》2003年第11期36-40,共5页Meteorological Monthly

摘　　要：介绍了对高速公路低能见度的数学描述 ,从相变理论、能见度突变的实际表现及车辆制动距离的需求 ,论证了对低能见度监测与预报的必要性 ,并介绍了在沪宁高速公路无锡段应用了一年多的低能见度监测与预报系统 ,实例表明对高速公路上造成低能见度的浓雾、包括局地性雾和突发性团雾具有可预报性 。The mathematical description of low visibility over highways is intruduced. It proves the necessity of monitoring and forecasting of low visibility on the basis of the theory of phase change and the actual sudden change of visibility and the braking distance requirement. The monitoring and forecasting system of low visibility that has been used on the Shanghai-Nanjing highway in Wuxi for more than a year are discribed. Some examples are given to show that this system can forecast the heavy fog, including the regional fog and the sudden fog so that serious traffic accidents can be lessened or avoided.

关 键 词：高速公路 低能见度 监测 预报 

分 类 号：P457.7[天文地球—大气科学及气象学]