Evaluation of the effect of regional joint-control measures on changing photochemical transformation: a comprehensive study of the optimization scenario analysis
Evaluation of the effect of regional joint-control measures on changing photochemical transformation: a comprehensive study of the optimization scenario analysis
复制标题
区域联控措施改变光化学转化效果评价：优化情景分析综合研究
DOI：
10.5194/acp-19-9037-2019
复制
发表时间：
2019-07-17
影响因子：
6.3
通讯作者：
Fu, Joshua S.
中科院分区：
文献类型：
--
作者：
Li, Li;Zhu, Shuhui;Fu, Joshua S.
中国东部地区的冬季通常会出现严重的雾霾天气。为控制本季度的严重空气污染，我们在整个行动中实施了全面的区域联防联控策略。为了评价这些策略的有效性，并为加强区域联防联控机制提供一些启示，采用测量-排放-模拟一体化方法，估算了控制措施对大气污染水平的影响。为了全面研究气象条件对空气质量的影响，以及控制措施，第二届世界互联网大会于2015年12月16日至18日在浙江省嘉兴市举行。首先分析了四种气象条件下的空气质量变化，然后在静态气象条件下比较了调节前、调节中和调节后的空气污染物浓度。接下来，我们进行了模拟情景，以量化空气污染控制措施造成的影响。结果表明，嘉兴市SO2、NOx、PM2. 5和挥发性有机物（VOCs）的排放总量分别减少了56%、58%、64%和80%，长三角地区SO2、NOx、PM2. 5和VOCs的排放总量分别减少了10%、9%、10%和11%。模拟结果表明，在12月8日至18日的活动期间，PM2.5日平均浓度下降了10 μ g（3），平均下降了14.6%。与以往研究相比，我们实施的优化分析也表明，本地减排在空气质量改善中起着关键作用，但它应辅以区域联动。在区域联合控制方面，在事件发生前48 h实施污染通道控制最有利于获得类似的效果。因此，建议应建立和加强以本地污染减排为核心的相邻地区之间的协同减排计划，并保留通过更强的区域联动针对不同污染类型的减排计划。
Heavy haze usually occurs in winter in eastern China. To control the severe air pollution during the season, comprehensive regional joint-control strategies were implemented throughout a campaign. To evaluate the effectiveness of these strategies and to provide some insights into strengthening the regional joint-control mechanism, the influence of control measures on levels of air pollution was estimated with an integrated measurement-emission-modeling method. To determine the influence of meteorological conditions, and the control measures on the air quality, in a comprehensive study, the 2nd World Internet Conference was held during 16-18 December 2015 in Jiaxing City, Zhejiang province, in the Yangtze River Delta (YRD) region. We first analyzed the air quality changes during four meteorological regimes and then compared the air pollutant concentrations before, during, and after the regulation under static meteorological conditions. Next, we conducted modeling scenarios to quantify the effects caused due to the air pollution control measures. We found that total emissions of SO2, NOx, PM2.5, and volatile organic compounds (VOCs) in Jiaxing were reduced by 56 %, 58 %, 64 %, and 80 %, respectively, while total emission reductions of SO2, NOx, PM2.5, and VOCs over the YRD region are estimated to be 10 %, 9 %, 10 %, and 11 %, respectively. Modeling results suggest that during the campaign from 8 to 18 December, PM2.5 daily average concentrations decreased by 10 mu gm(3) with an average decrease of 14.6 %. Our implemented optimization analysis compared with previous studies also reveals that local emission reductions play a key role in air quality improvement, although it shall be supplemented by regional linkage. In terms of regional joint control, implementing pollution channel control 48 h before the event is of most benefit in getting similar results. Therefore, it is recommended that a synergistic emission reduction plan between adjacent areas with local pollution emission reductions as the core part should be established and strengthened, and emission reduction plans for different types of pollution through a stronger regional linkage should be reserved.