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新型冠状病毒肺炎疫情防控时期上海市空气质量特征及成因分析

孔琳 胡婷莛 牛植 周梦鸽 饶品华 葛大逢 彭王敏子

孔琳, 胡婷莛, 牛植, 周梦鸽, 饶品华, 葛大逢, 彭王敏子. 新型冠状病毒肺炎疫情防控时期上海市空气质量特征及成因分析[J]. 环境工程, 2021, 39(9): 110-116,198. doi: 10.13205/j.hjgc.202109016
引用本文: 孔琳, 胡婷莛, 牛植, 周梦鸽, 饶品华, 葛大逢, 彭王敏子. 新型冠状病毒肺炎疫情防控时期上海市空气质量特征及成因分析[J]. 环境工程, 2021, 39(9): 110-116,198. doi: 10.13205/j.hjgc.202109016
KONG Lin, HU Ting-ting, NIU Zhi, ZHOU Meng-ge, RAO Pin-hua, GE Da-feng, PENG Wang-min-zi. CHARACTERISTICS AND CAUSES OF AIR CONDITION IN SHANGHAI DURING COVID-19 PREVENTION PERIODS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 110-116,198. doi: 10.13205/j.hjgc.202109016
Citation: KONG Lin, HU Ting-ting, NIU Zhi, ZHOU Meng-ge, RAO Pin-hua, GE Da-feng, PENG Wang-min-zi. CHARACTERISTICS AND CAUSES OF AIR CONDITION IN SHANGHAI DURING COVID-19 PREVENTION PERIODS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 110-116,198. doi: 10.13205/j.hjgc.202109016

新型冠状病毒肺炎疫情防控时期上海市空气质量特征及成因分析

doi: 10.13205/j.hjgc.202109016
基金项目: 

国家自然科学基金青年科学基金项目(51508395);中国博士后科学基金第57批面上基金项目(2015M571599)。

详细信息
    作者简介:

    孔琳(1999-),女,主要研究方向为大气环境监测。konglinflora@163.com

    通讯作者:

    胡婷莛(1984-),女,博士,讲师,主要从事城区大气污染监测与模拟、城区通风规划与设计方面研究。tingtinghu@sues.edu.cn

CHARACTERISTICS AND CAUSES OF AIR CONDITION IN SHANGHAI DURING COVID-19 PREVENTION PERIODS

  • 摘要: 为研究新型冠状病毒肺炎(COVID-19)疫情防控政策实施对上海市大气污染物质量浓度的影响,利用上海市内环某高层顶楼微环境平台观测了政策实施前10 d(2020-01-14—23)和实施后20 d(2020-01-24—02-12)的PM2.5和PM10质量浓度及气象要素(温度、相对湿度、风向、风速、大气压及降雨),结合2019年同期观测数据和杨浦四漂空气质量监测点的气态污染物逐时数据,采用描述性统计、合成分析、拉格朗日粒子扩散模式和Spearman相关系数方法,分析了政策实施前、后大气污染物特征及其影响因素。结果表明:1)污染物浓度变化方面。政策实施后,ρ(PM2.5)和ρ(PM10)和ρ(NO2)均明显降低,ρ(PM2.5)和ρ(PM10)分别由61.4,102.4 μg/m3降至38.1,63.5 μg/m3,降幅均为38.0%,ρ(NO2)由57.3 μg/m3降至27.0 μg/m3,降幅达到52.9%,而ρ(O3)由47.6 μg/m3增至69.5 μg/m3ρ(PM2.5)和ρ(PM10)日变化特征由实施前的双峰双谷型变为单谷型。2)气象因素影响方面。上海地区南风异常减弱了冬季风强度,对流层中层正距平异常抑制了对流活动的发展,易导致大气污染物在近地面的汇聚。ρ(PM2.5)和ρ(PM10)与相对湿度呈负相关,风速对ρ(PM2.5)和ρ(PM10)的影响与风向有关。3)外源输入影响方面。长三角城市群及山东省、河南省等周边区域对上海市ρ(PM2.5)和ρ(PM10)贡献显著。
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  • 收稿日期:  2020-09-17
  • 网络出版日期:  2022-01-21

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