新冠疫情期间南京市Pm_(2.5)浓度变化以及对人为源的响应研究  

Changes in Pm_(2.5)concentration and responses to anthropogenic emissions in Nanjing during the COVID-19

作　　者：宋樊玲 邱新法 曾燕[2] 王勇[3] 姚泽辉 SONG Fan-ling;QIU Xin-fa;ZENG Yan;WANG Yong;YAO Ze-hui(School of Geographical Science,Nanjing University of Information Science and Technology,Nanjing 210044,China;Key Laboratory of Transportation Meteorology of China Meteorological Administration,Nanjing Joint Institute for Atmospheric Sciences,Nanjing 210041,China;School of Applied Meteorology,Nanjing University of Information Science and Technology,Nanjing 210044,China;School of Environment,Beijing Normal University,Beijing 100091,China)

机构地区：[1]南京信息工程大学地理科学学院,江苏南京210044 [2]南京气象科技创新研究院中国气象局交通气象重点开放实验室,江苏南京210041 [3]南京信息工程大学应用气象学院,江苏南京210044 [4]北京师范大学环境学院,北京100091

出　　处：《环境生态学》2024年第5期108-119,共12页Environmental Ecology

基　　金：国家重点研发计划(2019YFB2102003);中国气象服务协会气象科技创新平台项目(CMSA2023MC022);江苏省研究生科研与实践创新计划项目(KYCX23-1344)资助。

摘　　要：新冠疫情暴发初期,各地政府采取了前所未有的防控措施防止病毒传播,为研究Pm_(2.5)浓度如何响应人为排放提供了一次非常难能可贵的机会。本研究通过使用空气质量模型WRF-Chem和最新公开的清华大学MEIC 2019以及MEIC 2020排放清单模拟了2020年疫情暴发初期以及2019年同期南京市Pm_(2.5)的浓度。通过设计排放情景,本研究探讨了南京市疫情暴发初期4个主要排放部门的排放量减少对Pm_(2.5)浓度的影响。结果发现,与2019年相比,2020年疫情暴发初期,Pm_(2.5)浓度下降了30%左右,且下降比例呈现从南京市主城区向外递减的规律。疫情防控措施对于工业源和民用源排放的影响最大,分别下降了37.4%和21.6%,符合南京市的生活特征、人口分布特征和主要工业区的实际位置。综上所述,今后南京市的减排工作应重点放在控制工业排放源和民用排放源上。本研究为之后南京市治理不同部门排放的Pm_(2.5)浓度提供了一定的理论依据。In the initial stage of the COVID-19,local governments took unprecedented measures to prevent the spread of the virus,providing a rare opportunity to study how Pm_(2.5)concentrations respond to anthropogenic emissions.This study simulates Pm_(2.5)concentrations in Nanjing at the beginning of the COVID-19 in 2020 and during the same period in 2019 by using the air quality model WRF-Chem and the latest published Tsinghua University MEIC 2019 and MEIC 2020 emission inventories.By designing emission scenarios,this study explored the impact of emission reductions from four major emission sectors on Pm_(2.5)concentration in the initial stage of the COVID-19 in Nanjing.The results showed that compared with 2019,the Pm_(2.5)concentration decreased by about 30%in the initial stage of the COVID-19 in 2020,and the decline ratio showed a law of decreasing from the main urban area of Nanjing.The COVID-19 control measures had the greatest impact on emissions from industrial emissions and residential emissions,which decreased by 37.4%and 21.6%,respectively,in line with the living characteristics,population distribution characteristics and the actual location of major industrial areas in Nanjing.In conclusion,future emission reduction efforts in Nanjing should prioritize controlling industrial and residential emission sources.This study provides a theoretical basis for the subsequent control of Pm_(2.5)concentrations emitted by different sectors in Nanjing.

关 键 词：新冠疫情 WRF-Chem 人为源排放 MEIC 

分 类 号：X513[环境科学与工程—环境工程]