Long-term variation and evaluation of air quality across Hong Kong region

作     者：Yan Tan Shuwen Han Yi Chen Zhongbiao Wu Shun-cheng Lee Yan Tan;Shuwen Han;Yi Chen;Zhongbiao Wu;Shun-cheng Lee

作者机构：School of Environmental and Municipal EngineeringQingdao University of TechnologyQingdao 266520China Department of Civil and Environmental EngineeringThe Hong Kong Polytechnic UniversityHong Kong SAR 999077China Division of Environment and SustainabilityThe Hong Kong University of Science and TechnologyHong Kong SAR 999077China Key Laboratory of Environment Remediation and Ecological HealthMinistry of EducationCollege of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2023年第127卷第5期

页      面：284-294页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：supported by the Research Grants Council of Hong Kong Government(Project No.T24/504/17 and T31-603/21-N) he Environment and Conservation Fund of Hong Kong Governmentt(Project No.ECF 63/2019) 

主　　题：Long-term variation Roadside Hong Kong region air quality Air Quality Objectives(AQO) Air quality health index(AQHI) 

摘      要：Study of Air Quality Objectives(AQOs)and long-term changes of air pollution plays a decisive role in formulating and refining pollution control *** this study,10-year variations of six major air pollutants were analyzed at seven monitoring sites in Hong Kong *** continuous decrease of annual averaged concentrations of NO_(2),SO_(2),CO,PM_(2.5)and PM_(10)and numbers of days with severe pollution conditions validated the efficiency of the series of air pollution control schemes implemented by the Hong Kong region ***,there is still a big gap to meet the ultimate targets described by the World Health ***,the concentration of O_(3)at roadside and urban stations increased by 135%±25%and 37%±18%from 2011 to 2020,respectively,meanwhile the highest 8 hr averaged O_(3)concentration was observed as 294μg/m^(3)at background station in 2020,which pointed out the increasing ozone pollution in Hong Kong *** was a great decrease in the annual times of air quality health index(AQHI)laying in“high,“very highand“seriouscategories from 2011 to 2020 with the decrease rate of 89.70%,91.30%and 89.74%at roadside stations,and 79.03%,95.98%and 72.73%at urban stations,***,the number of days categorized as“highor above at roadside station was twice more than that in the urban station during the past ten ***,more policies and attentions should be given to the roadside air quality and its adverse health effect to pedestrians on street.