2014~2017年云南省典型城市空气污染特征对比分析
Comparative Analysis of Air Pollution Characteristics in Typical Cities of Yunnan Province in 2014-2017
DOI: 10.12677/AEP.2019.95099, PDF,  被引量    国家科技经费支持
作者: 罗意然:桂林理工大学,环境科学与工程学院,广西 桂林;广西大学,资源环境与材料学院,广西 南宁;钟承韡:桂林理工大学,环境科学与工程学院,广西 桂林;王洪强*:桂林理工大学,环境科学与工程学院,广西 桂林;广西环境污染控制理论与技术重点实验室,广西 桂林
关键词: PM2.5O3空气污染后向轨迹分析 PM2.5 O3 Air Pollution Backward Trajectory Analysis
摘要: 通过云南省昆明、曲靖和玉溪3个典型城市2014年1月1日~2017年12月31日空气污染状况数据,分析了PM2.5和O3的时间变化特征,讨论了冬季两个典型污染观测期间的气团后向轨迹。结果表明:2014年至2017年PM2.5质量浓度呈下降趋势,浓度水平受污染源排放和气象条件影响,存在明显的季节和时段变化特征;O3浓度呈逐年上升的趋势;冬季两个典型污染观测期间采样点的气团后向轨迹显示,云南重污染天气的出现,与外来源叠加有密切关系,最可能的是云南西南部污染和来自缅甸等国家的长距离传输叠加导致。
Abstract: The air pollution data of 3 typical cities in Kunming, Qujing and Yuxi in January 1, 2014 to Decem-ber 31, 2017 were collected in Yunnan province. Analyzing the time varied characteristics of PM2.5 and O3, the backward trajectories of air masses during the two typical polluted observation periods in winter are discussed. The results showed that the concentration of PM2.5 decreased. There are obvious seasonal and temporal variations in the concentration level under the influence of pollution sources and meteorological conditions. The concentration of O3 is increasing year after year. According to the backward trajectory of air masses at sampling points during two typical pollution observation periods in winter, the occurrence of heavy pollution weather in Yunnan is closely related to the superposition of external sources, most likely due to pollution in southwestern Yunnan and long-distance transmission from Burma and other countries.
文章引用:罗意然, 钟承韡, 王洪强. 2014~2017年云南省典型城市空气污染特征对比分析[J]. 环境保护前沿, 2019, 9(5): 750-760. https://doi.org/10.12677/AEP.2019.95099

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