基于激光雷达的京津冀地区大气边界层高度特征研究

发布时间：2018-11-12 09:24

【摘要】：大气边界层高度对大气颗粒物污染具有重要的影响。为研究京津冀区域的大气边界层高度变化特征,利用该地区多个站点的激光雷达数据,进行了统计研究,并将激光雷达观测值与美国国家气象局国家环境预报中心全球资料同化系统模式模拟结果进行了对比。观测数据表明,京津冀地区的大气边界层具有明显的日变化特征和季节变化特征:白天的大气边界层高度高于夜晚,且边界层高值出现在14:00左右;夏、冬季的大气边界层高度高于春、冬季;冬季大气边界层高度有降低趋势。此外,2014年11月多个站点由激光雷达测得的边界层高度的统计分析表明,京津冀地区大气边界层高度在300~900m之间,且东南方向较高。
[Abstract]:The height of atmospheric boundary layer has an important effect on atmospheric particulate pollution. In order to study the variation characteristics of atmospheric boundary layer height in Beijing-Tianjin-Hebei region, a statistical study was carried out using lidar data from several stations in this area. The lidar observations are compared with the simulation results of the global data assimilation system of the National Center for Environmental Prediction of the National Weather Service. The observational data show that the atmospheric boundary layer in the Beijing-Tianjin-Hebei region has obvious diurnal and seasonal variation characteristics: the height of the atmospheric boundary layer in the daytime is higher than that in the night, and the height of the boundary layer appears at about 14:00; The height of atmospheric boundary layer in summer and winter is higher than that in spring and winter, and the height of atmospheric boundary layer decreases in winter. In addition, the statistical analysis of the height of the boundary layer measured by lidar at several stations in November 2014 shows that the height of the atmospheric boundary layer in the Beijing-Tianjin-Hebei region is between 300 ~ 900m and is relatively high to the southeast.
【作者单位】：中国科学院安徽光学精密机械研究所环境光学与技术重点实验室;中国科学技术大学;
【基金】：国家自然科学基金(41305126);国家自然科学基金重大研究计划(91544232) 国家973计划(2014CB447900)
【分类号】：TN958.98

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