Non-negligible contributions to human health from increased household air pollution exposure during the COVID-19 lockdown in China.
Ambient Air pollution
COVID-19
Household air pollution
Mortality
Journal
Environment international
ISSN: 1873-6750
Titre abrégé: Environ Int
Pays: Netherlands
ID NLM: 7807270
Informations de publication
Date de publication:
01 2022
01 2022
Historique:
received:
19
05
2021
revised:
23
09
2021
accepted:
03
10
2021
pubmed:
15
10
2021
medline:
24
12
2021
entrez:
14
10
2021
Statut:
ppublish
Résumé
Ambient and household air pollution are found to lead to premature deaths from all-cause or cause-specific death. The national lockdown measures in China during COVID-19 were found to lead to abrupt changes in ambient surface air quality, but indoor air quality changes were neglected. In this study, we aim to investigate the impacts of lockdown measures on both ambient and household air pollution as well as the short-term health effects of air pollution changes. In this study, an up-to-date emission inventory from January to March 2020 in China was developed based on air quality observations in combination with emission-concentration response functions derived from chemical transport modeling. These emission inventories, together with the emissions data from 2017 to 2019, were fed into the state-of-the-art regional chemistry transport model to simulate the air quality in the North China Plain. A hypothetical scenario assuming no lockdown effects in 2020 was also performed to determine the effects of the lockdown on air quality in 2020. A difference-to-difference approach was adopted to isolate the effects on air quality due to meteorological conditions and long-term decreasing emission trends by comparing the PM The national lockdown measures during COVID-19 led to a reduction of 5.1 µg m Our study indicates that lockdown measures in China led to abrupt reductions in ambient PM
Sections du résumé
BACKGROUND
Ambient and household air pollution are found to lead to premature deaths from all-cause or cause-specific death. The national lockdown measures in China during COVID-19 were found to lead to abrupt changes in ambient surface air quality, but indoor air quality changes were neglected. In this study, we aim to investigate the impacts of lockdown measures on both ambient and household air pollution as well as the short-term health effects of air pollution changes.
METHODS
In this study, an up-to-date emission inventory from January to March 2020 in China was developed based on air quality observations in combination with emission-concentration response functions derived from chemical transport modeling. These emission inventories, together with the emissions data from 2017 to 2019, were fed into the state-of-the-art regional chemistry transport model to simulate the air quality in the North China Plain. A hypothetical scenario assuming no lockdown effects in 2020 was also performed to determine the effects of the lockdown on air quality in 2020. A difference-to-difference approach was adopted to isolate the effects on air quality due to meteorological conditions and long-term decreasing emission trends by comparing the PM
FINDINGS
The national lockdown measures during COVID-19 led to a reduction of 5.1 µg m
INTERPRETATION
Our study indicates that lockdown measures in China led to abrupt reductions in ambient PM
Identifiants
pubmed: 34649048
pii: S0160-4120(21)00543-2
doi: 10.1016/j.envint.2021.106918
pmc: PMC8502102
pii:
doi:
Substances chimiques
Air Pollutants
0
Particulate Matter
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
106918Informations de copyright
Copyright © 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved.