Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina

The aim of the work was to evaluate the capability of the SMHI-RCA4 regional climate model (RCM) driven by the ERA-Interim reanalysis to simulate heat waves in Argentina. Firstly, we evaluated simulations of summer daily maximum temperature (Tmax) against observed data from nine stations. The model...

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Autor principal:	Rusticucci, Matilde
Publicado:	2018
Materias:	Argentina ENSO extreme events heat waves maximum temperature RCM Atmospheric pressure Climate models Nickel Pressure gradient Sea level Extreme events Heat waves Maximum temperature Climatology climate modeling El Nino-Southern Oscillation extreme event heat wave high temperature pressure gradient regional climate sea level pressure summer
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08998418_v38_n1_p483_Collazo http://hdl.handle.net/20.500.12110/paper_08998418_v38_n1_p483_Collazo
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_08998418_v38_n1_p483_Collazo
record_format	dspace
spelling	paper:paper_08998418_v38_n1_p483_Collazo2023-06-08T15:49:49Z Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina Rusticucci, Matilde Argentina ENSO extreme events heat waves maximum temperature RCM Atmospheric pressure Climate models Nickel Pressure gradient Sea level Argentina ENSO Extreme events Heat waves Maximum temperature Climatology climate modeling El Nino-Southern Oscillation extreme event heat wave high temperature pressure gradient regional climate sea level pressure summer Argentina The aim of the work was to evaluate the capability of the SMHI-RCA4 regional climate model (RCM) driven by the ERA-Interim reanalysis to simulate heat waves in Argentina. Firstly, we evaluated simulations of summer daily maximum temperature (Tmax) against observed data from nine stations. The model showed a warm Tmax bias at six locations and the smallest and/or negative biases were located over regions with complex topography. Heat waves were defined based on exceedances of the daily 90th percentile of Tmax at individual stations. The model overestimated the intensity, duration, and number of heat waves at all locations, but more intense heat waves were underestimated. In particular, we analysed the extreme heat wave that occurred in November 1985 in northeastern Argentina and found out that a possible reason for its underestimation was an inaccurate simulation of the sea level pressure gradient in the region. The weaker pressure gradient in the model caused a reduction of the warm northerly advection. Finally, we studied how the parameters of heat waves varied among different phases of El Niño-Southern Oscillation (ENSO) for observed and modelled data. At five stations, the strongest heat waves occurred during La Niña years and were probably associated with the decrease in precipitation. © 2017 Royal Meteorological Society Fil:Rusticucci, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08998418_v38_n1_p483_Collazo http://hdl.handle.net/20.500.12110/paper_08998418_v38_n1_p483_Collazo
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Argentina ENSO extreme events heat waves maximum temperature RCM Atmospheric pressure Climate models Nickel Pressure gradient Sea level Argentina ENSO Extreme events Heat waves Maximum temperature Climatology climate modeling El Nino-Southern Oscillation extreme event heat wave high temperature pressure gradient regional climate sea level pressure summer Argentina
spellingShingle	Argentina ENSO extreme events heat waves maximum temperature RCM Atmospheric pressure Climate models Nickel Pressure gradient Sea level Argentina ENSO Extreme events Heat waves Maximum temperature Climatology climate modeling El Nino-Southern Oscillation extreme event heat wave high temperature pressure gradient regional climate sea level pressure summer Argentina Rusticucci, Matilde Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina
topic_facet	Argentina ENSO extreme events heat waves maximum temperature RCM Atmospheric pressure Climate models Nickel Pressure gradient Sea level Argentina ENSO Extreme events Heat waves Maximum temperature Climatology climate modeling El Nino-Southern Oscillation extreme event heat wave high temperature pressure gradient regional climate sea level pressure summer Argentina
description	The aim of the work was to evaluate the capability of the SMHI-RCA4 regional climate model (RCM) driven by the ERA-Interim reanalysis to simulate heat waves in Argentina. Firstly, we evaluated simulations of summer daily maximum temperature (Tmax) against observed data from nine stations. The model showed a warm Tmax bias at six locations and the smallest and/or negative biases were located over regions with complex topography. Heat waves were defined based on exceedances of the daily 90th percentile of Tmax at individual stations. The model overestimated the intensity, duration, and number of heat waves at all locations, but more intense heat waves were underestimated. In particular, we analysed the extreme heat wave that occurred in November 1985 in northeastern Argentina and found out that a possible reason for its underestimation was an inaccurate simulation of the sea level pressure gradient in the region. The weaker pressure gradient in the model caused a reduction of the warm northerly advection. Finally, we studied how the parameters of heat waves varied among different phases of El Niño-Southern Oscillation (ENSO) for observed and modelled data. At five stations, the strongest heat waves occurred during La Niña years and were probably associated with the decrease in precipitation. © 2017 Royal Meteorological Society
author	Rusticucci, Matilde
author_facet	Rusticucci, Matilde
author_sort	Rusticucci, Matilde
title	Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina
title_short	Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina
title_full	Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina
title_fullStr	Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina
title_full_unstemmed	Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina
title_sort	capability of the smhi-rca4 rcm driven by the era-interim reanalysis to simulate heat waves in argentina
publishDate	2018
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08998418_v38_n1_p483_Collazo http://hdl.handle.net/20.500.12110/paper_08998418_v38_n1_p483_Collazo
work_keys_str_mv	AT rusticuccimatilde capabilityofthesmhirca4rcmdrivenbytheerainterimreanalysistosimulateheatwavesinargentina
_version_	1768541659997405184

Capability of the SMHI-RCA4 RCM driven by the ERA-Interim reanalysis to simulate heat waves in Argentina

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