Early Warning Role of Data from Automatic Stations in Forecast of Dense Fog

• 作者: Chen Weiwei Liu Hui Wang Guichen Yang Hongmei Zhang Honghua Zhang Liwen
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 自动站 预报预警 大雾 相关气象要素 低能见度 气温上升 最低温度 持续时间
• 年，卷（期）: 2014,（7）
• 页码范围: 8-11
• 页数: 4页
• 分类号: P415.12

摘要

Based on observation data from automatic stations in Lianyungang,visibility and weather situation of dense fog leading to a traffic accident in Lianyungang on April 15,2012 were analyzed firstly,and then changes of meteorological factors related to fog appearance and disappearance,such as wind speed,temperature and relative humidity,were discussed. The results showed that wind speed was below 2 m/s when fog occurred,and wind velocity reduced obviously before visibility deceased,appearing a trough. Fog appeared when temperature was nearly the minimum,and there was no great change in wind speed,but visibility went up gradually after temperature rose. The longer the duration of the minimum temperature,the longer the duration of the minimum visibility. Moreover,visibility would become low after temperature rose.