Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models

A group of eight CMIP5 models are used to evaluate how much of the future changes in winter precipitation can be explained by changes in frontal activity over the Southern Hemisphere (SH). The frontal activity is calculated at the 850 hPa level using the cyclonic vorticity, the horizontal gradient o...

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Autores principales: Blázquez, J., Solman, S.A.
Formato: INPR
Materias:
CMIP5 models
Fronts
Precipitation
Southern Hemisphere
Wintertime
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09307575_v_n_p_Blazquez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09307575_v_n_p_Blazquez2023-10-03T15:48:08Z Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models Blázquez, J. Solman, S.A. CMIP5 models Fronts Precipitation Southern Hemisphere Wintertime A group of eight CMIP5 models are used to evaluate how much of the future changes in winter precipitation can be explained by changes in frontal activity over the Southern Hemisphere (SH). The frontal activity is calculated at the 850 hPa level using the cyclonic vorticity, the horizontal gradient of temperature and the specific humidity. The changes are evaluated taking into account the historical and the RCP45 experiments. Changes in frontal activity are positive over most of the SH, being the areas with the largest increases over the mid to high latitudes. Most of these changes are driven especially by the changes in the specific humidity. The precipitation change shows a decrease at subtropical latitudes, mostly associated with a decrease in non frontal precipitation, controlled by a decrease in relative humidity and in moisture flux convergence. At mid to higher latitudes, the precipitation responds to increases in both frontal and non frontal precipitation, associated with increasing frontal activity and relative humidity and increases in the moisture flux convergence at the lower levels of the atmosphere, respectively. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. INPR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09307575_v_n_p_Blazquez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic CMIP5 models
Fronts
Precipitation
Southern Hemisphere
Wintertime
spellingShingle CMIP5 models
Fronts
Precipitation
Southern Hemisphere
Wintertime
Blázquez, J.
Solman, S.A.
Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models
topic_facet CMIP5 models
Fronts
Precipitation
Southern Hemisphere
Wintertime
description A group of eight CMIP5 models are used to evaluate how much of the future changes in winter precipitation can be explained by changes in frontal activity over the Southern Hemisphere (SH). The frontal activity is calculated at the 850 hPa level using the cyclonic vorticity, the horizontal gradient of temperature and the specific humidity. The changes are evaluated taking into account the historical and the RCP45 experiments. Changes in frontal activity are positive over most of the SH, being the areas with the largest increases over the mid to high latitudes. Most of these changes are driven especially by the changes in the specific humidity. The precipitation change shows a decrease at subtropical latitudes, mostly associated with a decrease in non frontal precipitation, controlled by a decrease in relative humidity and in moisture flux convergence. At mid to higher latitudes, the precipitation responds to increases in both frontal and non frontal precipitation, associated with increasing frontal activity and relative humidity and increases in the moisture flux convergence at the lower levels of the atmosphere, respectively. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
format INPR
author Blázquez, J.
Solman, S.A.
author_facet Blázquez, J.
Solman, S.A.
author_sort Blázquez, J.
title Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models
title_short Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models
title_full Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models
title_fullStr Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models
title_full_unstemmed Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models
title_sort relationship between projected changes in precipitation and fronts in the austral winter of the southern hemisphere from a suite of cmip5 models
url http://hdl.handle.net/20.500.12110/paper_09307575_v_n_p_Blazquez
work_keys_str_mv AT blazquezj relationshipbetweenprojectedchangesinprecipitationandfrontsintheaustralwinterofthesouthernhemispherefromasuiteofcmip5models
AT solmansa relationshipbetweenprojectedchangesinprecipitationandfrontsintheaustralwinterofthesouthernhemispherefromasuiteofcmip5models
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