Mostrar el registro sencillo del ítem
dc.contributor.author
Bracegirdle, T.J.
dc.contributor.author
Holmes, C.R.
dc.contributor.author
Hosking, J.S.
dc.contributor.author
Marshall, G.J.
dc.contributor.author
Osman, Marisol
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Patterson, M.
dc.contributor.author
Rackow, T.
dc.date.available
2021-10-18T15:34:18Z
dc.date.issued
2020-05
dc.identifier.citation
Bracegirdle, T.J.; Holmes, C.R.; Hosking, J.S.; Marshall, G.J.; Osman, Marisol; et al.; Improvements in Circumpolar Southern Hemisphere Extratropical Atmospheric Circulation in CMIP6 Compared to CMIP; Wiley Blackwell Publishing, Inc; Earth and Space Science; 7; 6; 5-2020; 1-25
dc.identifier.issn
2333-5084
dc.identifier.uri
http://hdl.handle.net/11336/144092
dc.description.abstract
One of the major globally relevant systematic biases in previous generations of climate models has been an equatorward bias in the latitude of the Southern Hemisphere (SH) mid-latitude tropospheric eddy driven westerly jet. The far-reaching implications of this for Southern Ocean heat and carbon uptake and Antarctic land and sea ice are key reasons why addressing this bias is a high priority. It is therefore of primary importance to evaluate the representation of the SH westerly jet in the latest generation of global climate and earth system models that comprise the Coupled Model Intercomparison Project Phase 6 (CMIP6). In this paper we assess the representation of major indices of SH extratropical atmospheric circulation in CMIP6 by comparison against both observations and the previous generation of CMIP5 models. Indices assessed are the latitude and speed of the westerly jet, variability of the Southern Annular Mode (SAM), and representation of the Amundsen Sea Low (ASL). These are calculated from the historical forcing simulations of both CMIP5 and CMIP6 for time periods matching available observational and reanalysis data sets. From the 39 CMIP6 models available at the time of writing there is an overall reduction in the equatorward bias of the annual mean westerly jet from 1.9° in CMIP5 to 0.4° in CMIP6 and from a seasonal perspective the reduction is clearest in austral spring and summer. This is accompanied by a halving of the bias of SAM decorrelation timescales compared to CMIP5. However, no such overall improvements are evident for the ASL.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
AMUNDSEN SEA LOW
dc.subject
ANTARCTIC
dc.subject
CMIP5
dc.subject
CMIP6
dc.subject
SOUTHERN OCEAN
dc.subject
WESTERLY JET
dc.subject.classification
Investigación Climatológica
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
Improvements in Circumpolar Southern Hemisphere Extratropical Atmospheric Circulation in CMIP6 Compared to CMIP
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-07T18:13:56Z
dc.journal.volume
7
dc.journal.number
6
dc.journal.pagination
1-25
dc.journal.pais
Estados Unidos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.description.fil
Fil: Bracegirdle, T.J.. British Antarctic Survey; Reino Unido
dc.description.fil
Fil: Holmes, C.R.. British Artarctic Survey; Reino Unido
dc.description.fil
Fil: Hosking, J.S.. British Antarctic Survey; Reino Unido
dc.description.fil
Fil: Marshall, G.J.. British Antarctic Survey; Reino Unido
dc.description.fil
Fil: Osman, Marisol. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
dc.description.fil
Fil: Patterson, M.. University of Oxford; Reino Unido
dc.description.fil
Fil: Rackow, T.. Helmholtz Centre for Polar and Marine Research; Alemania
dc.journal.title
Earth and Space Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1029/2019EA001065
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2019EA001065
Archivos asociados