Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/185763
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

Response of Arctic ozone to sudden stratospheric warmings

AutorCámara, Álvaro de la; Abalos, Marta; Hitchcock, Peter B.; Calvo, N.; García, Rolando R.
Fecha de publicación21-nov-2018
EditorEuropean Geosciences Union
CitaciónAtmospheric Chemistry and Physics 18(22): 16499-16513 (2018)
ResumenSudden stratospheric warmings (SSWs) are the main source of intra-seasonal and interannual variability in the extratropical stratosphere. The profound alterations to the stratospheric circulation that accompany such events produce rapid changes in the atmospheric composition. The goal of this study is to deepen our understanding of the dynamics that control changes of Arctic ozone during the life cycle of SSWs, providing a quantitative analysis of advective transport and mixing. We use output from four ensemble members (60 years each) of the Whole Atmospheric Community Climate Model version 4 performed for the Chemistry Climate Model Initiative and also use reanalysis and satellite data for validation purposes. The composite evolution of ozone displays positive mixing ratio anomalies of up to 0.5–0.6 ppmv above 550 K (∼ 50 hPa) around the central warming date and negative anomalies below (−0.2 to −0.3 ppmv), consistently in observations, reanalysis, and the model. Our analysis shows a clear temporal offset between ozone eddy transport and diffusive ozone fluxes. The initial changes in ozone are mainly driven by isentropic eddy fluxes linked to enhanced wave drag responsible for the SSW. The recovery of climatological values in the aftermath of SSWs is slower in the lower than in the upper stratosphere and is driven by the competing effects of cross-isentropic motions (which work towards the recovery) and isentropic irreversible mixing (which delays the recovery). These features are enhanced in strength and duration during sufficiently deep SSWs, particularly those followed by polar-night jet oscillation (PJO) events. It is found that SSW-induced ozone concentration anomalies below 600 K (∼ 40 hPa), as well as total column estimates, persist around 1 month longer in PJO than in non-PJO warmings.
Versión del editorhttps://doi.org/10.5194/acp-18-16499-2018
URIhttp://hdl.handle.net/10261/185763
DOI10.5194/acp-18-16499-2018
ISSN1680-7316
E-ISSN1680-7324
Aparece en las colecciones: (IGEO) Artículos




Ficheros en este ítem:
Fichero Descripción Tamaño Formato
Response of Arctic ozone_Camara.pdf1,72 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

SCOPUSTM   
Citations

26
checked on 14-mar-2024

WEB OF SCIENCETM
Citations

24
checked on 24-feb-2024

Page view(s)

173
checked on 18-mar-2024

Download(s)

198
checked on 18-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


Este item está licenciado bajo una Licencia Creative Commons Creative Commons