...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric chemistry and physics >Effectiveness of short-term air quality emission controls: a high-resolution model study of Beijing during the Asia-Pacific Economic Cooperation (APEC) summit period
【24h】

Effectiveness of short-term air quality emission controls: a high-resolution model study of Beijing during the Asia-Pacific Economic Cooperation (APEC) summit period

机译：短期空气质量排放控制的有效性：亚太经济合作期间北京高分辨率模型研究（APEC）峰会期

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We explore the impacts of short-term emission controls on haze events in Beijing in OctoberNovember 2014 using high-resolutionWeather Research and Forecasting model with Chemistry (WRF-Chem) simulations. The model reproduces surface temperature and relative humidity profiles over the period well and captures the observed variations in key atmospheric pollutants. We highlight the sensitivity of simulated pollutant levels to meteorological variables and model resolution and in particular to treatment of turbulent mixing in the planetary boundary layer. We note that simulating particle composition in the region remains a challenge, and we overpredict NH4 and NO3 at the expense of SO4. We find that the emission controls implemented for the Asia-Pacific Economic Cooperation (APEC) summit period made a relatively small contribution to improved air quality (20 %-26 %), highlighting the important role played by favourable meteorological conditions over this period. We demonstrate that the same controls applied under less favourable meteorological conditions would have been insufficient in reducing pollutant levels to meet the required standards. Continued application of these controls over the 6-week period considered would only have reduced the number of haze days when daily mean fine particulate matter exceeds 75 mu g m(-3) from 15 to 13 d (days). Our study highlights the limitations of current emission controls and the need for more stringent measures over a wider region during meteo-rologically stagnant weather.
机译：我们探讨了2014年Octognov Erdernov Event Octognov Expernover 2014年北京对寒霾事件的影响，采用高分辨治天气研究和预测化学（WRF-Chem）模拟。该模型在周期中再现表面温度和相对湿度谱，并捕获关键大气污染物的观察到的变化。我们突出了模拟污染水平与气象变量和模型分辨率的敏感性，特别是在行星边界层中的湍流混合处理。我们注意到，模拟该地区的粒子组成仍然是一个挑战，并且我们以SO4为代价占用NH4和NO3。我们发现，为亚太经济合作（APEC）峰会期实施的排放控制对提高空气质量（20％-26％）进行了相对较小的贡献，突出了这一时期在良好的气象条件下发挥的重要作用。我们证明，在不太有利的气象条件下应用的相同对照在减少污染物水平以满足所需标准的情况下不足。在考虑的6周期间继续应用这些对照只会减少每日平均细颗粒物质超过15至13d（天）时的雾度天数。我们的研究突出了当前排放控制的局限性，以及在Meteo-rologly上停滞的天气期间更广泛的地区需要更严格的措施。

著录项

  • 来源
    《Atmospheric chemistry and physics》 |2019年第13期|共18页
  • 作者

    Ansari Tabish Umar; Wild Oliver; Li Jie; Yang Ting; Xu Weiqi; Sun Yele; Wang Zifa;

  • 作者单位

    Univ Lancaster Lancaster Environm Ctr Lancaster England;

    Univ Lancaster Lancaster Environm Ctr Lancaster England;

    Chinese Acad Sci Inst Atmospher Phys State Key Lab Atmospher Boundary Layer Phys &

    Atm Beijing Peoples R China;

    Chinese Acad Sci Inst Atmospher Phys State Key Lab Atmospher Boundary Layer Phys &

    Atm Beijing Peoples R China;

    Chinese Acad Sci Inst Atmospher Phys State Key Lab Atmospher Boundary Layer Phys &

    Atm Beijing Peoples R China;

    Chinese Acad Sci Inst Atmospher Phys State Key Lab Atmospher Boundary Layer Phys &

    Atm Beijing Peoples R China;

    Chinese Acad Sci Inst Atmospher Phys State Key Lab Atmospher Boundary Layer Phys &

    Atm Beijing Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 大气科学（气象学）;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号