首页|华北地区夏季严重臭氧污染事件及气象要素分析

华北地区夏季严重臭氧污染事件及气象要素分析

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
2017年6月中旬,华北地区经历了持续的臭氧污染事件.华北地区55个城市的8h臭氧质量浓度均高于160 μg·m-3,一些主要城市臭氧质量浓度甚至超过200 μg·m-3.在这段时间内,臭氧柱质量浓度、PM2.5和PM10质量浓度也发生了增长.为了分析气象因素对于臭氧的影响,本文按照温度的不同划分为2个时期.此外,为了定量的分析该影响,结合气象参数建立了一个综合气象因子评估模型.结果显示,臭氧质量浓度和气象评估因素的相关性R在北京,天津和唐山分别为0.694、0.803和0.755.同时,根据后向轨迹模型分析了气团的变化.最后,结合2014—2018年的人为排放源分析了该时间段华北地区夏季臭氧的变化趋势.在北京、天津及唐山地区,线性回归的斜率分别为0.422、0.160和0.887.此结果表明,这3个城市近5年来6月份的臭氧质量浓度均有显著的增长.
Heavy summer ozone pollution episode and related meteorological factors in North China
In mid-June 2017,North China experienced an episode of continuous ozone pollution.The eight-hour ozone concentration in 55 cities in North China was all above 160 μg·m-3,or even above 200μg·m-3 in major cities.The concentrations of column ozone,PM2.5 and PM10 all increased in this period.To analyze influence of meteorological parameters on ozone,two phases are defined according to air temperature.In addition,to describe this influence quantitatively,a comprehensive meteorological assessment program is constructed and a meteorological evaluation factor is defined based on combined meteorological parameters.Correlation R between ozone concentration and meteorological evaluation factor in Beijing,Tianjin and Tangshan was found to be 0.694,0.803 and 0.755,respectively.We also analyzed transport of air masses by HYSPLIT backward trajectories.Finally,we combined anthropogenic emissions for these years to analyze trend of summer ozone in North China from 2014 to 2018.Slope of linear regression was 0.422,0.160,0.887 for Beijing,Tianjin and Tangshan respectively.It can be seen that,in these three cities,ozone concentration for June increased distinctly in the past five years.

photochemical pollutionhigh temperatureozonemeteorological factor

薛文晧、张晶、周丽花、乔岩

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北京师范大学全球变化与地球系统科学研究院,100875,北京

光化学污染 高温 臭氧 气象因子

Supported by National Key R&D Program of ChinaNational Science Foundation of ChinaFundamental Research Funds for the Central Universities

2017YFA060360341575144312231103

2019

北京师范大学学报(自然科学版)
北京师范大学

北京师范大学学报(自然科学版)

CSTPCDCSCD北大核心
影响因子：0.505
ISSN：0476-0301
年,卷(期)：2019.55(1)
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