Air Quality Response in China Linked to the 2019 Novel Coronavirus (COVID-19) Lockdown.
COVID‐19
NO2
air quality
health impact
ozone
Journal
Geophysical research letters
ISSN: 0094-8276
Titre abrégé: Geophys Res Lett
Pays: United States
ID NLM: 9882887
Informations de publication
Date de publication:
16 Oct 2020
16 Oct 2020
Historique:
received:
09
06
2020
revised:
21
08
2020
accepted:
08
09
2020
entrez:
11
11
2020
pubmed:
12
11
2020
medline:
12
11
2020
Statut:
ppublish
Résumé
Efforts to stem the spread of COVID-19 in China hinged on severe restrictions to human movement starting 23 January 2020 in Wuhan and subsequently to other provinces. Here, we quantify the ancillary impacts on air pollution and human health using inverse emissions estimates based on multiple satellite observations. We find that Chinese NOx emissions were reduced by 36% from early January to mid-February, with more than 80% of reductions occurring after their respective lockdown in most provinces. The reduced precursor emissions increased surface ozone by up to 16 ppb over northern China but decreased PM2.5 by up to 23 μg m
Identifiants
pubmed: 33173248
doi: 10.1029/2020GL089252
pii: GRL61293
pmc: PMC7646019
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e2020GL089252Informations de copyright
© 2020. The Authors.
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