| 成都市一次重雾霾过程成因及污染源的HYSPLIT模式分析 |
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| 引用本文： | 文雯,刘自牧.成都市一次重雾霾过程成因及污染源的HYSPLIT模式分析[J].新疆气象,2023,17(3):87-92. |
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| 作者姓名： | 文雯 刘自牧 |
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| 作者单位： | 四川省气象服务中心 |
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| 基金项目： | 高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金项目青年专项(SCQXKJQN2020032) |
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| 摘 要： | 利用成都地区环境空气质量指数资料、常规气象观测资料和ECMWF第五代全球再分析资料（ERA5），对2017年成都市冬季一次持续重雾霾过程的成因进行分析，并利用HYSPLIT后向轨迹模式分析此次污染物的来源。结果表明：此次重雾霾过程的成因是高低空相配合的不利环流形势，风速较低，垂直切变小，层结稳定，对流层中低层存在干暖空气构成逆温层，抑制了污染物的扩散。根据模式的结果，此次污染气团主要来源于较远距离的西北地区、四川盆地西南地区及盆地内部流转的气团。
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| 关 键 词： | 成都市 雾霾 气象条件 HYSPLIT模式 |
| 收稿时间： | 2021/5/17 0:00:00 |
| 修稿时间： | 2021/11/18 0:00:00 |
The cause of a heavy fog-haze process and HYSPLIT model analysis of its sources in Chengdu |
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| wenwen.The cause of a heavy fog-haze process and HYSPLIT model analysis of its sources in Chengdu[J].Bimonthly of Xinjiang Meteorology,2023,17(3):87-92. |
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| Authors: | wenwen |
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| Institution: | Chengdu University of Information Technology |
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| Abstract: | Based on air quality index data, meteorological observation data and the EC fifth-generation global reanalysis data, the cause of a long-lasting fog-haze process in Chengdu during the winter of 2017 was analyzed, and the pollutant source were discussed using HYSPLIT(Hybrid Single Particle Lagrangian Integrated Trajectory) backward trajectory mode. The results show that the fog-haze process is due to the adverse circulation situation with the upper and lower altitudes cooperate. The meteorological conditions are low wind speed, small vertical shear and stable stratification, and the inversion layer composed of dry warm air in the middle and lower troposphere inhibits the diffusion of pollutants. According to the model resultsl, the polluted air masses mainly comes from the long-distance northwestern region, the southwestern region of the lower reaches of the basin and the circulating air mass within the basin. |
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| Keywords: | Chengdu Fog-haze Meteorologic condition HYSPLIT model |
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