空气质量保障措施的量化评估——以杭州G20峰会为例

唐甲洁; 陈敏东; 高庆先; 马占云; 李迎新

doi:10.12153/j.issn.1674-991X.20200088

空气质量保障措施的量化评估——以杭州G20峰会为例

doi: 10.12153/j.issn.1674-991X.20200088

唐甲洁^1,2,,
陈敏东^1,*, ,,
高庆先²,
马占云²,
李迎新²

1.
江苏省大气环境监测与污染控制重点实验室,南京信息工程大学环境科学与工程学院
2.
中国环境科学研究院

详细信息

作者简介:
唐甲洁(1995—),女,硕士研究生,主要从事气候变化和环境影响研究,18262618975@163.com

通讯作者:
陈敏东 E-mail: 001126@nuist.edu.cn

中图分类号: X51
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出版历程
- 收稿日期: 2020-04-14
- 刊出日期: 2021-01-20

Quantitative assessment of air quality guarantee measures: take G20 Summit in Hangzhou as an example

1.
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, College of Environmental Science and Engineering, Nanjing University of Information Science & Technology
2.
Chinese Research Academy of Environmental Sciences

More Information

Corresponding author: CHEN Mindong E-mail: 001126@nuist.edu.cn

摘要

摘要: 选择杭州G20峰会保障措施实施期间的2016年8月24日—9月6日及其前后各14 d,分别确定为保障措施实施期间、实施前期与实施后期,对保障区域内主要大气污染物浓度变化进行分析,利用WRF/SMOKE/CMAQ模型对4类污染源(工业源、电厂源、扬尘源和道路移动源)设置6种减排情景,模拟计算并分析PM_2.5和O₃浓度变化,以评估强化环保措施对空气质量改善的成效。结果表明:1)研究期间杭州市各项污染物浓度呈起伏波动状,保障措施实施期间大部分时段污染物浓度峰谷差值明显比前期和后期小;NO₂平均浓度表现为保障措施实施后期>前期>期间,保障措施对NO₂减排效果显著;O₃浓度表现为保障措施实施期间远高于前期与后期。2)与2015年同期相比,2016年保障措施实施期间,NO₂、SO₂、PM_2.5、CO和PM₁₀浓度在核心区和严控区下降,降幅表现为核心区>严控区>管控区;2016年核心区NO₂、PM_2.5、CO和PM₁₀浓度均低于2017年;2016年相较2015年和2017年同期空气质量较好,不同力度的管控措施对空气质量的影响有差异,O₃浓度变化规律与其他污染物浓度变化呈负相关。3)模拟对4类污染源都实施保障措施,核心区与严控区较强的管控措施执行力度使PM_2.5浓度下降,O₃浓度升高。4)模拟结果显示,对工业源做管控措施,能有效降低核心区与严控区PM_2.5和O₃排放;对电厂源或扬尘源实行管控措施只能略微抑制核心区与管控区PM_2.5和O₃排放;对道路移动源做减排措施,核心区与严控区O₃浓度升幅较大。
- 杭州G20峰会 /
- 保障措施成效 /
- WRF/SMOKE/CMAQ模型
Abstract: From August 24 to September 6, 2016, and 14 days before and after the implementation period of the guarantee measures of G20 Summit in Hangzhou were selected as the earlier and the later stages of the implementation of the guarantee measures, and the concentration changes of the main air pollutants in the guarantee area were analyzed. The WRF/SMOKE/CMAQ model was used to set up six scenarios of emission reduction for four types of pollution sources (industrial source, power plant source, dust source and road mobile source), and PM_2.5 and O₃ concentration changes were analyzed to evaluate the effect of strengthening environmental protection measures on air quality improvement. The results showed that: 1)During the whole research period, the concentrations of pollutants in Hangzhou were in the form of a wave, and the difference between the peak and valley concentrations of pollutants in most periods of the implementation of the guarantee measures was significantly smaller than that in the earlier and later periods; the average concentration of NO₂was in the later period > the earlier period > the period of the implementation of the guarantee measures, and the effect of the guarantee measures on the emission reduction of NO₂ was significant; the concentration of O₃in the period of the implementation of the guarantee measures was much higher than that in the earlier and later periods. 2)Compared with the same period in 2015, the concentrations of NO₂, SO₂, PM_2.5, CO and PM₁₀ in the core area and strict control area decreased during the implementation of the measures in 2016, with a decrease of core area > strict control area > control area; the concentrations of NO₂, PM_2.5, CO and PM₁₀ in the core area in 2016 were lower than those in 2017; the air quality in 2016 was better than that in 2015 and 2017; the impact of different control measures on air quality was different, and the variation of O₃ concentration was negatively correlated with the variation of other pollutants. 3)Four types of pollution sources were simulated to implement guarantee measures; the strong implementation of control measures in the core area and strict control area made PM_2.5 concentration decrease and O₃ concentration increase. 4)The simulation results showed that the control measures for industrial sources could effectively reduce PM_2.5 and O₃ emissions in the core area and strict control area; the control measures for power plant sources or dust sources could only slightly inhibit PM_2.5 and O₃ emissions in the core area and control area; the emission reduction measures for road mobile sources could significantly increase O₃ concentration in the core area and strict control area.
- G20 Summit in Hangzhou /
- effectiveness of guarantee measures /
- WRF/SMOKE/CMAQ model

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