沈山高速公路大雾天气气候特征及其对交通的影响及防御  

Climatic Feathers of Heavy Fog in Shenshan Highway and Its Impact to Traffic and Preventing Strategy

作　　者：侯亚红[1] 亢云龙 王启威[1] 赵凡[1] 张蕊[3] 

机构地区：[1]辽宁省气象服务中心,沈阳110166 [2]抚顺市气象局,辽宁抚顺113006 [3]沈阳市东陵区气象局,沈阳110168

出　　处：《中国农学通报》2015年第28期221-228,共8页Chinese Agricultural Science Bulletin

基　　金：中国气象局行业专项"道路天气预警服务;对策与气象服务效益评估"(GYHY201106001)

摘　　要：利用沈山高速公路沿线8个气象观测站（沈阳、辽中、台安、盘锦、锦州、葫芦岛、兴城、绥中）1981—2012年的大雾实况资料,分析沈山高速公路沿线大雾时空分布特征。结果表明：在时间分布上,2003—2012年,沈山高速公路大雾日数呈上升趋势,年平均为16.4天,比20世纪80年代增加1.8天;辽中、台安、盘锦和沈阳4个站大雾天气主要出现在秋、冬季,而锦州、葫芦岛、兴城、绥中4个站大雾天气主要出现在夏、秋季。大雾日变化明显,有2个生成的高发阶段,一个在早晨3—6时,另一个在夜里21—24时,大雾消散的时间主要在15时之前,消散的峰值在上午9时左右,89%的大雾持续时间不超过10 h,2-4 h左右的雾发生频率最高。在空间分布上,沈山高速沿线西南部沿海雾日多,内陆地区雾日少,有明显的地区差异。在对沈山高速公路沿线大雾天气气候特征分析的基础上,结合2008—2012年沈山高速由于大雾的原因引发的交通事故分析,探讨了大雾对沈山高速公路交通的影响,选取大雾灾害隐患点,找出服务关键期,并有针对性地提出防御建议。Using heavy fog data from 8 meteorological observation stations（Shenyang, Liaozhong, Tai＇an,Panjin, Jinzhou, Huludao, Xingcheng, Suizhong） in 1981- 2012 along Shenshan highway, we analyzed thespatial and temporal pattern of heavy fog along Shenshan highway. Results showed that the heavy fog timesincreased in the past 10 years with 16.4 days per year on average, 1.8 days more compared with that of 1980 s.Data of Liaozhong, Tai＇an, Panjin and Shenyang stations indicated that the heavy fog weather appeared mainlyat fall and winter, while in Jinzhou, Huludao, Xingcheng and Suizhong, the fog weather happened mainly insummer and fall. There were two peak times for heavy fog occurrences： one in 03-06 am, the other in 21-24 pm. The fog dissipation time was mainly before 15 pm, with peak time at 9 am. 89% of heavy fog only lastedless than 10 hours, with most lasting for 2-4 hours. Southwestern section of the Shenshan highway along seahad more fog days, while inland section had few fog days, with distinctive regional differences. Based on theanalysis of traffic accidents caused by heavy fog from 2008 to 2012, we discussed the impact of heavy fog ontransportation, selected key hidden trouble spot, and proposed suggestions on the prevention of heavy fog.

关 键 词：沈山高速 大雾 气候特征 服务关键期 隐患点 

分 类 号：P49[天文地球—大气科学及气象学]