On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics.
Geophys Res Lett
; 48(22): e2021GL095232, 2021 Nov 28.
Article
em En
| MEDLINE
| ID: mdl-35864979
ABSTRACT
The 2015 and 2020 ozone holes set record sizes in October-December. We show that these years, as well as other recent large ozone holes, still adhere to a fundamental recovery metric the later onset of early spring ozone depletion as chlorine and bromine diminishes. This behavior is also captured in the Whole Atmosphere Chemistry Climate Model. We quantify observed recovery trends of the onset of the ozone hole and in the size of the September ozone hole, with good model agreement. A substantial reduction in ozone hole depth during September over the past decade is also seen. Our results indicate that, due to dynamical phenomena, it is likely that large ozone holes will continue to occur intermittently in October-December, but ozone recovery will still be detectable through the later onset, smaller, and less deep September ozone holes metrics that are governed more by chemical processes.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Geophys Res Lett
Ano de publicação:
2021
Tipo de documento:
Article