No severe ozone depletion in the tropical stratosphere in recent decades - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Atmospheric Chemistry and Physics Discussions Année : 2024

No severe ozone depletion in the tropical stratosphere in recent decades

Résumé

Stratospheric ozone is an important constituent of the atmosphere. Significant changes in its concentrations have great consequences for the environment in general and for ecosystems, in particular. Here, we analyse ground-based, ozonesonde and satellite ozone measurements, and reanalysis data to examine the ozone depletion in the tropics, and the spatiotemporal trends in ozone during the past five decades (1980-2020). In the tropics, the amount of column ozone is small (250-270 DU) compared to high and mid-latitudes. In addition, the tropical total ozone trend is very small (±0-0.2 DU/yr), compared to high (±1-1.5 DU/yr) and mid-latitudes (±0.75-1 DU/yr) of both hemispheres as estimated for the period 1998-2018. No measurements and no analyses show any signature of severe stratospheric ozone depletion in the tropics in contrast to a recent claim. Finally, it is very unlikely that an ozone hole would occur outside the Antarctic today with respect to the current stratospheric halogen levels.
Fichier principal
Vignette du fichier
egusphere-2023-2574.pdf (1.63 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Licence : CC BY - Paternité

Dates et versions

insu-04311976 , version 1 (28-11-2023)

Licence

Paternité

Identifiants

Citer

Jayanarayanan Kuttippurath, Gopalakrishna Pillai Gopikrishnan, Rolf Müller, Sophie Godin-Beekmann, Jerome Brioude. No severe ozone depletion in the tropical stratosphere in recent decades. Atmospheric Chemistry and Physics Discussions, 2024, ⟨10.5194/egusphere-2023-2574⟩. ⟨insu-04311976⟩
73 Consultations
50 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More