气象要素变化对城市空气质量影响的评估方法与应用——以PM2.5为例
摘要 从城市尺度空气质量模型和平流扩散理论出发，通过对气象要素归类，利用空气质量与各类气象条件对应排放源强表征量的关联，建立了气象要素变化对城市空气质量影响的评估方法.该方法考虑了包括风（风速和风向）、云量、太阳辐射强度、大气稳定度、混合层高度等基本气象要素，能定量有效评估长期气象要素变化对空气质量的改善幅度.该方法在河南省鹤壁市的应用表明，相对2020年，2021年PM2.5浓度下降7.2μg/m3，气象要素变化和人为减排分别下降0.4和6.8μg/m3，占改善浓度的5.6%和94.4%，人努力起到主导作用；从季度来看，大气污染防治工作使夏、秋、冬季PM2.5浓度均有所降低，其中冬季下降27.8μg/m3，减排措施贡献16.8μg/m3，人努力效果尤为显著.服务把本文推荐给朋友加入我的书架加入引用管理器 E-mail AlertRSS作者相关文章赵妤希任家豪陈义珍张新民张凯杨欣何友江关键词 ：排放源强表征量, 气象要素变化, 空气质量, 评估方法, 鹤壁市, PM2.5 Abstract：Based on the urban scale air quality model and the advection diffusion theory, this research classified the meteorological elements, then studied the correlation between the air quality and the emission source intensity corresponding to various meteorological conditions, and finally established an assessment method of the impact of meteorological element changes on urban air quality. The method considered the basic meteorological elements including wind (wind speed and direction), cloud cover, solar radiation intensity, atmospheric stability, mixing layer height and so on. The method can evaluate the improvement of air quality caused by long-term meteorological changes quantitatively and effectively. A case study was carried out for Hebi in which the PM2.5 concentration decreased by 7.2μg/m3 in 2021 compared with that in 2020. The calculation result showed that the change of meteorological elements and emission reduction were decreased by 0.4μg/m3 and 6.8μg/m3 which accounted for 5.6% and 94.4%, respectively. The results indicated a leading role of the human efforts on the improvement of the air quality. At the same time, the calculation results showed that concentration of PM2.5 decreased in all of summer, autumn and winter due to the effective prevention and control of air pollution. The most significant effect of human efforts was found in winter. The concentration of PM2.5 decreased by 27.8μg/m3 in winter and the contribution of human efforts was 16.8μg/m3.Key words：emission source intensity change of meteorological elements air quality evaluation method Hebi PM2.5 收稿日期: 2022-05-31 基金资助:大气重污染成因与治理攻关项目（DQGG0304）通讯作者:张凯,研究员,zhangkai@craes.org.cn E-mail: zhangkai@craes.org.cn作者简介: 赵妤希(1987-),女,北京人,工程师,学士,主要研究方向为大气环境过程探测研究.发表论文10余篇.引用本文: 赵妤希, 任家豪, 陈义珍, 张新民, 张凯, 杨欣, 何友江. 气象要素变化对城市空气质量影响的评估方法与应用——以PM2.5为例[J]. 中国环境科学, 2022, 42(12): 5610-5616. ZHAO Yu-xi, REN Jia-hao, CHEN Yi-zhen, ZHANG Xin-min, ZHANG Kai, YANG Xin, HE You-jiang. Evaluation method and application in influences of meteorological element on urban air quality: taking PM2.5 as an example. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(12): 5610-5616.链接本文: http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I12/5610
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