2011—2015年安徽省高速公路低能见度变化特征

发布时间：2019-04-11 11:38

【摘要】：利用2011—2015年安徽省高速公路自动气象观测站观测的能见度资料,分析了安徽省低能见度年、日变化及其与降水的关系,结果表明:受降雨影响,大别山区和皖南山区部分站点低能见度出现频率最高时段在汛期(5—9月),其他地区主要出现在10月和11月。低能见度出现时间存在明显日变化,夜间出现频率高于白天,19:00以后开始逐渐增多,日出前后达到最大,之后迅速减少。7—8月的13:00—17:00出现与降水相关的低能见度频率较高。不同季节里,各站低能见度出现最多的时间和频率存在一定差异,春季和秋季最低能见度主要出现在日出前后,冬季主要出现在夜间到日出之前,夏季江淮之间北部和淮北地区主要出现在日出前后,江淮之间南部到江南在一天各时间段内出现频率较为均匀。
[Abstract]:Based on the visibility data observed by the automatic meteorological observation station in Anhui Province in 2011-2015, the relationship between the annual change of the low visibility and its relationship with the precipitation in Anhui Province is analyzed. The results show that the rainfall is affected by the rainfall. The highest frequency of the low visibility of some stations in the Dabie Mountains and the southern part of the Southern Anhui is in the flood season (May, September), and the other areas mainly occurred in October and November. There was a significant daily change in the time of low visibility. The frequency of the night was higher than that in the day. The maximum before and after the sunrise was reached before and after the sunrise. The low visibility frequency associated with the precipitation was higher in the 13:00 to 17:00 in August. In different seasons, the time and frequency of low visibility in each station are different. The lowest visibility in the spring and fall mainly occurs before and after the sunrise, and mainly in the north and the Huaibei area before and after the sunrise in the summer before and after the sunrise. In that south to the south of the Jianghuai, the frequency of the south to the south is more uniform over the time period of the day.
【作者单位】：安徽省公共气象服务中心;江苏省气象科学研究所;合肥市气象局;
【基金】：江苏省气象科学研究所北极阁基金资助项目(BJG201501) 安徽省气象局预报员专项项目(KY201607);安徽省气象局科研基金项目(KM201513)资助
【分类号】：U491.53

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