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基于multiple-TSMs的北京奥体中心2月颗粒物来源解析<sub><sup>*</sup></sub>
李炟, 盛黎, 宋振鑫, 陈静, 胡江凯, 佟华
(国家气象中心)
Analysis of the Olympic Center pollutants source in February based on multiple-TSMs
Li Da, shengli, SONG Zhenxin, CHEN Jing, HU Jiangkai, tong hua
(National Meteorological Center Of CMA)
摘要
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投稿时间:2018-09-17    修订日期:2020-03-02
中文摘要: 利用HYSPLIT模型和ERA_INTERIM数据,以北京奥体中心为起点,计算2013-2017年2月期间抵达其的72小时后向轨迹。结合聚类分析和奥体中心污染物浓度数据,分析2月份不同轨迹路径对奥体中心污染物浓度影响,通过multiple-TSMs方法分析奥体中心污染物来源地特征。结果表明:奥体中心2月份主导气流明显,为西北路径,出现概率为55.85%。清洁通道为北向气流,污染来源为南向路径和偏东路径,对应颗粒物浓度最高;通过轨迹统计方法得到奥体中心2月份颗粒物主要污染来源为河北地区、山东半岛、黄渤海区域、新疆北部与河西走廊。PSCF和CWT方法适用于近距离污染源识别,RTWC方法在识别中指示性较好,QTBA适用于大范围污染源识别,RTWC方法和QTBA结合使用可消除污染物虚假来源。
Abstract:Using HYSPLIT model and ERA_INTERIM data, the 72-hours back forward trajectories were calculated that arrived in February 2013-2017 starting from the Beijing Olympic Center. Combined with cluster analysis and pollutant concentration data in the Olympic Center, the influence of different trajectory paths on the concentration of pollutants in the Olympic Center was analyzed. The multiple-TSMs was used to analyze the source characteristics of the pollutants in the Olympic Center. The results show that the dominant airflow in the Olympic Sports Center is obvious in February, which is the northwestern route with a probability of 55.85%. The cleaning path is northward airflow, and the pollution source is a southward path and an eastward path, corresponding the highest particulate matter concentration. By trajectory statistical method, the main sources of particulate matter at the Olympic Center in February were Hebei, Shandong Peninsula, Yellow Sea Region, Northern Xinjiang and Hexi Corridor. The PSCF and CWT methods are suitable for close-range pollution source identification. The RTWC method is better indicative in identification. QTBA gives consistent results in estimating locations for large and clearly defined sources.The combination of RTWC and QTBA method can eliminate the false pollutants source.
文章编号:201809170407     中图分类号:    文献标志码:
基金项目:科技部国家基础研究发展规划项目,国家自然科学基金项目(面上项目,重点项目,重大项目)
引用文本:
李炟,盛黎,宋振鑫,陈静,胡江凯,佟华,0.[en_title][J].Meteor Mon,():-.
Li Da,shengli,SONG Zhenxin,CHEN Jing,HU Jiangkai,tong hua,0.Analysis of the Olympic Center pollutants source in February based on multiple-TSMs[J].Meteor Mon,():-.