摘要
[目的]探讨徐州市大雾天气的特点及预报方法。[方法]利用1960～2009年徐州地区大雾天气历史资料,对该区大雾的特点以及形成条件进行分析,然后介绍大雾天气的预报方法,最后提出大雾的防灾对策。[结果]徐州一年四季均可能出现大雾,最多的是12月份,占全年的16.4%;6月份最少,占全年的2.2%,且持续时间较短,浓度也不大;冬半年远多于夏半年,10月～次年2月的5个月即占了全年的2/3。大雾的生成时间主要是在后半夜至早晨前后为最多,而午后出现大雾的情况极少,说明徐州市大雾主要以辐射雾为主,纯平流雾较少,而有时也会有平流+辐射混合雾出现。[结论]该研究为徐州市大雾天气的准确预报提供了较为科学的预报方法。
[Objective] The study aimed to discuss the characteristics and forecasting methods of dense fog in Xuzhou City.[Method] Based on the data of dense fog in Xizhou City during 1960-2009,the characteristics and forming conditions of dense fog in the region were analyzed,and then its forecasting methods were introduced,finally corresponding disaster prevention measures were put forward.[Result] Dense fog might appear in each season,its frequency of occurrence was the highest in December,namely 16.4%;it was the lowest in June（2.2%）,and the fog lasted for a short time and was thin.Heavy fog occurred more frequently in winter half year than summer half year,and the frequency of occurrence from October to next February was about 66.7%.In addition,dense fog mostly generated from late midnight to morning,while it appeared less in the afternoon.It shows that dense fog in Xizhou City is mainly radiation fog instead of advection fog,but the two kinds of fog appeared simultaneously sometimes.[Conclusion] The research could provide scientific forecasting methods for the precise prediction of dense fog in Xizhou City.
出处
《安徽农业科学》
CAS
2012年第33期16270-16271,16376,共3页
Journal of Anhui Agricultural Sciences
基金
江苏省气象局预报员专项基金"基于SVM方法的徐州大雾预报模型研究"
关键词
大雾
形成条件
预报
对策
徐州市
Dense fog
Forming conditions
Forecast
Countermeasures Xuzhou City
作者简介
彭明艳（1974-），女，江苏徐州人，工程师，本科，从事大气科学研究，E-mail：771893669@qq．com
