COVID-19 Crisis Reduces Free Tropospheric Ozone Across the Northern Hemisphere.
COVID‐19
emissions
ozone
troposphere
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 Mar 2021
16 Mar 2021
Historique:
received:
04
12
2020
revised:
28
01
2021
accepted:
03
02
2021
entrez:
31
3
2021
pubmed:
1
4
2021
medline:
1
4
2021
Statut:
ppublish
Résumé
Throughout spring and summer 2020, ozone stations in the northern extratropics recorded unusually low ozone in the free troposphere. From April to August, and from 1 to 8 kilometers altitude, ozone was on average 7% (≈4 nmol/mol) below the 2000-2020 climatological mean. Such low ozone, over several months, and at so many stations, has not been observed in any previous year since at least 2000. Atmospheric composition analyses from the Copernicus Atmosphere Monitoring Service and simulations from the NASA GMI model indicate that the large 2020 springtime ozone depletion in the Arctic stratosphere contributed less than one-quarter of the observed tropospheric anomaly. The observed anomaly is consistent with recent chemistry-climate model simulations, which assume emissions reductions similar to those caused by the COVID-19 crisis. COVID-19 related emissions reductions appear to be the major cause for the observed reduced free tropospheric ozone in 2020.
Identifiants
pubmed: 33785974
doi: 10.1029/2020GL091987
pii: GRL61988
pmc: PMC7995013
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e2020GL091987Informations de copyright
© 2021. The Authors.
Références
Sci Total Environ. 2020 Nov 1;741:140426
pubmed: 32593893
Nat Commun. 2020 Oct 14;11(1):5172
pubmed: 33057164
Sci Total Environ. 2020 Aug 25;732:139280
pubmed: 32402928
J Geophys Res Atmos. 2019 Aug 16;124(15):8837-8850
pubmed: 32071827
J Clim. 2017 Jun 20;Volume 30(Iss 13):5419-5454
pubmed: 32020988
Sci Total Environ. 2020 Nov 25;745:141105
pubmed: 32731074
Geophys Res Lett. 2020 May 18;:e2020GL088070
pubmed: 32836516
Sci Total Environ. 2020 Dec 10;747:141322
pubmed: 32781318
Geophys Res Lett. 2020 Oct 28;47(20):e2020GL090326
pubmed: 33173249
Sci Total Environ. 2020 Sep 15;735:139542
pubmed: 32447070
Sci Total Environ. 2020 Oct 1;737:139765
pubmed: 32480061
J Geophys Res Atmos. 2018 Mar 27;123(6):3243-3268
pubmed: 33154879
Proc Natl Acad Sci U S A. 2020 Aug 11;117(32):18984-18990
pubmed: 32723816
Geophys Res Lett. 2020 Aug 17;:e2020GL089269
pubmed: 32904906
Geophys Res Lett. 2020 Oct 16;47(19):e2020GL090080
pubmed: 33041389
Nat Chem. 2020 Sep;12(9):777-779
pubmed: 32843750
Geophys Res Lett. 2020 May 08;:e2020GL087978
pubmed: 32836515