Prediction of Heavy Radiation Fog in Nanjing-Zhenjiang Area along Shanghai- Nanjing Expressway
On the basis of the real-time observation data of 37 days heavy radiation fog from 2006 to 2009, taken from 9 stations along Maqun-Douzhuang of Ningzhen Hill Area, a part of Shanghai-Nanjing Expressway, radiation fog forecasting experiments were carried ont in this study. The results are as follows: (1) According to the practical need of the Highway Administration, the visibility is divided into three levels: 200-500m,50-200m,<50m. When Tdiff≤3℃, the heavy radiation fog with visibility less than 50m may occur before dawn with high possibility, while when Tdiff ≥ 4℃, the minimum visibility will be larger than 500m; (2) The precipitation provides the major vapor source for the heavy radiation fog occurred, which can not come into being without the precipitation of yesterday and the day before yesterday; (3) The predicting significance of the relative humidity of 2 meters above the ground and 10m wind, as predicted in the GFS mode.
Ningzhen Hill Area heavy radiation fog dew point
Jianjun Wu Hongsheng Tang Xiaoyi Tian Chengsong Yuan
Nanjing Institute of Transportation Meteorology, Jiangsu Meteorological Bureau, Nanjing, 210008, China
国际会议
昆明、丽江
英文
890-894
2011-04-15（万方平台首次上网日期，不代表论文的发表时间）