The Long Hazy Tail: Analysis of the Impacts and Trends of Severe Outdoor and Indoor Air Pollution in North China

Meng，Wenjun1,2,3; Cheng，Yafang3; Shen，Guofeng1,2; Shen，Huizhong4; Su，Hang5; Tao，Shu1,2,4

2024-05-14

10.1021/acs.est.4c02778

Environmental Science and Technology   影响因子和分区

0013-936X

1520-5851

China, especially the densely populated North China region, experienced severe haze events in the past decade that concerned the public. Although the most extreme cases have been largely eliminated through recent mitigation measures, severe outdoor air pollution persists and its environmental impact needs to be understood. Severe indoor pollution draws less public attention due to the short visible distance indoors, but its public health impacts cannot be ignored. Herein, we assess the trends and impacts of severe outdoor and indoor air pollution in North China from 2014 to 2021. Our results demonstrate the uneven contribution of severe hazy days to ambient and exposure concentrations of particulate matter with an aerodynamic diameter <2.5 (PM). Although severe indoor pollution contributes to indoor PM concentrations (23%) to a similar extent as severe haze contributes to ambient PM concentrations (21%), the former’s contribution to premature deaths was significantly higher. Furthermore, residential emissions contributed more in the higher PM concentration range both indoors and outdoors. Notably, severe haze had greater health impacts on urban residents, while severe indoor pollution was more impactful in rural areas. Our findings suggest that, besides reducing severe haze, mitigating severe indoor pollution is an important aspect of combating air pollution, especially toward improving public health.

health benefits PM2.5 residential contribution severe haze severe indoor air pollution

SCI ; EI

英语

通讯

ENVIRONMENT/ECOLOGY

2-s2.0-85192237315

Scopus

1.Institute of Carbon Neutrality,Peking University,Beijing,100871,China
2.Laboratory for Earth Surface Processes and College of Urban and Environmental Sciences,Peking University,Beijing,100871,China
3.Minerva Research Group,Max Planck Institute for Chemistry,Mainz,55128,Germany
4.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.Institute for Atmospheric Physics,Chinese Academy of Science,Beijing,100029,China

Meng，Wenjun,Cheng，Yafang,Shen，Guofeng,et al. The Long Hazy Tail: Analysis of the Impacts and Trends of Severe Outdoor and Indoor Air Pollution in North China[J]. Environmental Science and Technology,2024,58(19):8326-8335.

Meng，Wenjun,Cheng，Yafang,Shen，Guofeng,Shen，Huizhong,Su，Hang,&Tao，Shu.(2024).The Long Hazy Tail: Analysis of the Impacts and Trends of Severe Outdoor and Indoor Air Pollution in North China.Environmental Science and Technology,58(19),8326-8335.

Meng，Wenjun,et al."The Long Hazy Tail: Analysis of the Impacts and Trends of Severe Outdoor and Indoor Air Pollution in North China".Environmental Science and Technology 58.19(2024):8326-8335.