Revisiting regional and seasonal variations in decadal carbon monoxide variability: Global reversal of growth rate.
Carbon monoxide
Emissions
Inter-decadal
Regional trend analysis
Trends
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
20 Jan 2024
20 Jan 2024
Historique:
received:
30
06
2023
revised:
09
10
2023
accepted:
08
11
2023
medline:
21
11
2023
pubmed:
21
11
2023
entrez:
20
11
2023
Statut:
ppublish
Résumé
Carbon monoxide (CO) is one of the important trace gases in the atmosphere capturing the evolution of chemical properties of the troposphere. Here we analyze the growth rates of CO during the period of 1991-2020 using in situ measurements from the World Meteorological Organization's (WMO) Global Atmospheric Watch (GAW) program. The analysis of trends has been done on different spatial and temporal scales. Our analysis supports the decline in the overall CO mixing ratios over the globe but inter-decadal and regional trend analysis has shown heterogeneous changes in the given period of study. On average, there has been a decrease of -16.22 ± 1.92 ppb and -4.5 ± 0.64 ppb observed at the sites in the northern hemisphere (NH) and southern hemisphere (SH), respectively. This decline occurred at rates of -0.80 ± 0.12 ppb yr
Identifiants
pubmed: 37984655
pii: S0048-9697(23)07104-8
doi: 10.1016/j.scitotenv.2023.168476
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
168476Informations de copyright
Copyright © 2023 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.