摘要
利用兰州市激光雷达观测结果,结合地面观测数据以及HYSPLIT模式结果,综合分析2018年11月25日-30日兰州市的强沙尘天气过程。结果显示此次沙尘过程起源于甘肃省河西走廊一带,自西北向东南方向传输,并影响兰州市,对兰州市的影响时长达5天;沙尘期间兰州市边界层高度低于1km;激光雷达监测结果显示兰州市沙尘过程期间消光系数达到1.3±0.1km^(-1);与地面颗粒物监测结果相比,激光雷达观测到的兰州受沙尘影响时长要多18小时37分。
A dust process in Lanzhou at November 25 to 30,2018 was comprehensively analyzed based on the results of Lanzhou lidar observation,ground observation data and HYSPLIT model.The results show that the dust process originated in the Hexi Corridor of Gansu province and transmitted from northwest to southeast,affecting Lanzhou for 5 days.During the dust period,the height of the boundary layer of Lanzhou was less than 1 km.Lidar monitoring results showed that the extinction coefficient of the dust process in Lanzhou reached 1.3±0.1 km^(-1),and the depolarization ratio was distributed in the range of 0.3-0.8.The duration of dust that affected Lanzhou observed by lidar was more than 18 hours and 37 minutes when compared with the monitoring results of surface particulate.
作者
包新荣
王莉娜
杨燕萍
陶会杰
杨丽丽
BAO Xinrong;WANG Lina;YANG Yanping;TAO Huijie;YANG Lili(Gansu Province Environmental Monitoring Center,Lanzhou730020,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2021年第1期92-99,共8页
Journal of Arid Land Resources and Environment
