The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model

The atmospheric response to the 11 year solar cycle (SC) and its combination with the quasi-biennal oscillation (QBO) are analyzed in four simulations of the Whole Atmosphere Community Climate Model version 3.5 (WACCM3.5), which were performed with observed sea surface temperatures, volcanic eruptio...

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Authors: Chiodo, G., Calvo Fernández, Natalia, Marsh, D. R., García Herrera, Ricardo Francisco
Format: article
Publication Date:2012
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/44194
Online Access:https://hdl.handle.net/20.500.14352/44194
Access Level:Open access
Keyword:52
Quasi-biennial oscillation
North polar-region
Stratospheric ozone
Dynamical response
Middle atmosphere
Uv-radiation
Night jet
Variability Qbo
Temperature
Astrofísica
Astronomía (Física)
Física atmosférica
2501 Ciencias de la Atmósfera
id ES_2c87e5db48b6fc3cff099bc5d31c7348
oai_identifier_str oai:docta.ucm.es:20.500.14352/44194
network_acronym_str ES
network_name_str España
repository_id_str
spelling The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate ModelChiodo, G.Calvo Fernández, NataliaMarsh, D. R.García Herrera, Ricardo Francisco52Quasi-biennial oscillationNorth polar-regionStratospheric ozoneDynamical responseMiddle atmosphereUv-radiationNight jetVariability QboTemperatureAstrofísicaAstronomía (Física)Física atmosférica2501 Ciencias de la AtmósferaThe atmospheric response to the 11 year solar cycle (SC) and its combination with the quasi-biennal oscillation (QBO) are analyzed in four simulations of the Whole Atmosphere Community Climate Model version 3.5 (WACCM3.5), which were performed with observed sea surface temperatures, volcanic eruptions, greenhouse gases, and a nudged QBO. The analysis focuses on the annual mean response of the model to the SC and on the evolution of the solar signal during the Northern Hemispheric winter. WACCM3.5 simulates a significantly warmer stratosphere under solar maximum conditions compared to solar minimum. The vertical structure of the signal in temperature and ozone at low latitudes agrees with observations better than previous versions of the model. The temperature and wind response in the extratropics is more uncertain because of its seasonal dependence and the large dynamical variability of the polar vortex. However, all four simulations reproduce the observed downward propagation of zonal wind anomalies from the upper stratosphere to the lower stratosphere during boreal winter resulting from solar-induced modulation of the polar night jet and the Brewer-Dobson circulation. Combined QBO-SC effects in the extratropics are consistent with observations, but they are not robust across the ensemble members. During boreal winter, solar signals are also found in tropospheric circulation and surface temperature. Overall, these results confirm the plausibility of proposed dynamical mechanisms driving the atmospheric response to the SC. The improvement of the model climatology and variability in the polar stratosphere is the basis for the success in simulating the evolution and magnitude of the solar signal.American Geophysical UnionUniversidad Complutense de Madrid20122012-03-2920122012-03-29journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44194reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/441942026-06-02T12:44:21Z
dc.title.none.fl_str_mv The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model
title The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model
spellingShingle The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model
Chiodo, G.
52
Quasi-biennial oscillation
North polar-region
Stratospheric ozone
Dynamical response
Middle atmosphere
Uv-radiation
Night jet
Variability Qbo
Temperature
Astrofísica
Astronomía (Física)
Física atmosférica
2501 Ciencias de la Atmósfera
title_short The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model
title_full The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model
title_fullStr The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model
title_full_unstemmed The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model
title_sort The 11 year solar cycle signal in transient simulations from the Whole Atmosphere Community Climate Model
dc.creator.none.fl_str_mv Chiodo, G.
Calvo Fernández, Natalia
Marsh, D. R.
García Herrera, Ricardo Francisco
author Chiodo, G.
author_facet Chiodo, G.
Calvo Fernández, Natalia
Marsh, D. R.
García Herrera, Ricardo Francisco
author_role author
author2 Calvo Fernández, Natalia
Marsh, D. R.
García Herrera, Ricardo Francisco
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Quasi-biennial oscillation
North polar-region
Stratospheric ozone
Dynamical response
Middle atmosphere
Uv-radiation
Night jet
Variability Qbo
Temperature
Astrofísica
Astronomía (Física)
Física atmosférica
2501 Ciencias de la Atmósfera
topic 52
Quasi-biennial oscillation
North polar-region
Stratospheric ozone
Dynamical response
Middle atmosphere
Uv-radiation
Night jet
Variability Qbo
Temperature
Astrofísica
Astronomía (Física)
Física atmosférica
2501 Ciencias de la Atmósfera
description The atmospheric response to the 11 year solar cycle (SC) and its combination with the quasi-biennal oscillation (QBO) are analyzed in four simulations of the Whole Atmosphere Community Climate Model version 3.5 (WACCM3.5), which were performed with observed sea surface temperatures, volcanic eruptions, greenhouse gases, and a nudged QBO. The analysis focuses on the annual mean response of the model to the SC and on the evolution of the solar signal during the Northern Hemispheric winter. WACCM3.5 simulates a significantly warmer stratosphere under solar maximum conditions compared to solar minimum. The vertical structure of the signal in temperature and ozone at low latitudes agrees with observations better than previous versions of the model. The temperature and wind response in the extratropics is more uncertain because of its seasonal dependence and the large dynamical variability of the polar vortex. However, all four simulations reproduce the observed downward propagation of zonal wind anomalies from the upper stratosphere to the lower stratosphere during boreal winter resulting from solar-induced modulation of the polar night jet and the Brewer-Dobson circulation. Combined QBO-SC effects in the extratropics are consistent with observations, but they are not robust across the ensemble members. During boreal winter, solar signals are also found in tropospheric circulation and surface temperature. Overall, these results confirm the plausibility of proposed dynamical mechanisms driving the atmospheric response to the SC. The improvement of the model climatology and variability in the polar stratosphere is the basis for the success in simulating the evolution and magnitude of the solar signal.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-03-29
2012
2012-03-29
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/44194
url https://hdl.handle.net/20.500.14352/44194
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405247718293504
score 15,228081

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