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首页> 外文期刊>Building and Environment >Characteristics of urban air pollution in different regions of China between 2015 and 2019
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Characteristics of urban air pollution in different regions of China between 2015 and 2019

机译：2015年至2019年中国不同地区城市空气污染特征

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摘要

The severity of urban air pollution problems in China increases with the city's size and population density. Outdoor air pollution not only affects indoor air quality but also increases building energy consumption. We analyzed the characteristics of urban air pollution in China based on long-period monitoring data with high temporal resolution (hourly) recorded between September 1, 2014 and August 31, 2019. We compared five key regions in detail: "2 + 26 cities," the Yangtze River delta (YRD), the Pearl River delta (PRD), the Northeast China Plain (NECP), and the Sichuan Basin (SCB). The results show decreases in the annual mean concentrations of particulate matter, PM2.5 and PM10, SO2, and CO but an increase in the O-3 concentration. The increasing O-3 rate in the 2 + 26 cities region was nearly 14 times that of the global rate. In terms of diurnal variation, NO2 and CO reached maxima between 8:00 and 9:00 a.m. due to morning rush hour traffic, which was approximately 1 h before the PMs and SO2 reached their maxima. In the monthly variation profiles, the SO2 concentration magnitudes in the NECP were similar to those of the 2 + 26 cities during winter heating periods and the YRD region during the non-heating periods. Minima associated with "plum rain" and the rainy season were also observed in the O-3 monthly variation profiles of the YRD and SCB regions, respectively. In the 2 + 26 cities region, each pollutant showed significantly large temporal variation relative to the spatial variation, which is indicative of the regional air pollution trend.
机译：中国城市空气污染问题的严重程度随着城市的规模和人口密度而增加。室外空气污染不仅影响室内空气质量，还会增加建筑能耗。我们根据长期监测数据分析了中国城市空气污染的特点，以2014年9月1日至2019年8月31日录得高时的监测数据（每小时）。我们将五个关键地区进行了比较：“2 + 26个城市， “长江三角洲（YRD），珠江三角洲（珠三角），中国东北地区（NECP）和四川盆地（SCB）。结果表明，颗粒物质，PM2.5和PM10，SO 2和CO的年平均浓度降低，但是o-3浓度的增加。 2 + 26城市地区的o-3率的增加近14倍，即全球速率。在日元变异方面，NO2和CO在上午8:00至9:00之间达到了最大值。由于早晨的高峰时间流量，在PMS和SO2达到最大值之前大约1小时。在月度变化型材中，NECP中的SO2浓度幅度与在冬季加热时段期间的2 + 26个城市中的SO2浓度幅度和在非加热时段期间的YRD区域。在YRD和SCB地区的O-3每月变化轮廓中也观察到与“梅花”和雨季相关的最小值。在2 + 26个城市地区，每个污染物相对于空间变异显示出显着大的时间变化，这表明区域空气污染趋势。

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  • 来源
    《Building and Environment》 |2020年第8期|107048.1-107048.17|共17页
  • 作者

    Fan Yifan; Ding Xiaotian; Hang Jian; Ge Jian;

  • 作者单位

    Zhejiang Univ Coll Civil Engn & Architecture Hangzhou Peoples R China;

    Zhejiang Univ Coll Civil Engn & Architecture Hangzhou Peoples R China;

    Sun Yat Sen Univ Sch Atmospher Sci Guangdong Prov Key Lab Climate Change & Nat Disas Guangzhou Peoples R China;

    Zhejiang Univ Coll Civil Engn & Architecture Hangzhou Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Urban air pollution; China haze; Temporal variation; Spatial variation;

    机译：城市空气污染;中国阴霾;时间变异;空间变异;

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