Verification of global and regional NWP models over South America

Autores
De Elia, Ramon; Haiden, Thomas; Matsudo, Cynthia Mariana; Otero, Federico; Gascón, Estíbaliz; Castro, Lucía; Magnusson, Linus; Godoy, Alejandro; Coelho, Caio; Bechis, Hernán; Casati, Barbara; D Amen, Daniela Lilian; Frassoni, Ariane; Galgano, Santiago; Osman, Marisol; Osores, María Soledad; Righetti, Silvina Andrea; Salio, Paola Veronica; Saucedo, Marcos Adolfo; Garcia Skabar, Yanina; Spennemann, Pablo Cristian; Stell, José Luis; Wedi, Nils
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
South America has received less attention from the global numerical weather prediction community than many other regions. This is reflected, for example, in its absence as a region in the standardised WMO verification score exchange. As a result, global modelling centres may have missed out on interesting scientific challenges, and potential insights, in a unique testing ground in one of the few land masses in the Southern Hemisphere. To address this situation, a pilot project was launched in early 2024 by the Working Group on Numerical Experimentation (WGNE) and the Joint Working Group on Forecast Verification Research (JWGFVR), partly in response to the requirements of the United Nations Early Warnings for All initiative (EW4All). This pilot project, led by the Argentine National Meteorological Service (SMN) and the European Centre for Medium Range Forecasting (ECMWF), aims to explore the performance of global and regional forecasts over South America and their potential as early warning tools. For the sake of simplicity, we have focused mainly on the territory of Argentina and on deterministic operational forecasts. This Technical Memorandum presents the first results of the pilot project, focusing on two perspectives: a general statistical verification of the ECMWF Integrated Forecasting System (IFS) control operational forecast, and an in-depth evaluation of model performance in three individual High Impact Weather (HIW) events which, due to their characteristics, are both of societal relevance and posing a challenge to models. Within the first perspective, temporally and/or spatially aggregated summary verification statistics are produced for upper air variables by comparing forecasts with their own analysis, and for surface variables by comparing surface forecast fields with SYNOP station data. In addition, the IFS deterministic operational forecast is compared with other global models and with a limited area model over the South America region. Within the second perspective, three individual case studies covering HIW events with very different characteristics are analysed: a convective storm causing severe wind damage and loss of life, a strong Zonda wind (Foehn) on the lee side of the Andes, and a prolonged heat wave.
Fil: De Elia, Ramon. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Haiden, Thomas. European Centre For Medium Range Forecasting; Reino Unido
Fil: Matsudo, Cynthia Mariana. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Otero, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Gascón, Estíbaliz. European Centre For Medium Range Forecasting; Reino Unido
Fil: Castro, Lucía. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Magnusson, Linus. European Centre For Medium Range Forecasting; Reino Unido
Fil: Godoy, Alejandro. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Coelho, Caio. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Bechis, Hernán. 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
Fil: Casati, Barbara. Environment And Climate Change Canada; Canadá
Fil: D Amen, Daniela Lilian. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Frassoni, Ariane. Environment And Climate Change Canada; Canadá
Fil: Galgano, Santiago. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
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. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Osores, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Righetti, Silvina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina
Fil: Salio, Paola Veronica. 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. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Saucedo, Marcos Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Garcia Skabar, Yanina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Spennemann, Pablo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Stell, José Luis. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Wedi, Nils. European Centre For Medium Range Forecasting; Reino Unido
Materia
REGIONAL MODELS
SOUTH AMERICA
VERIFICATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/290754

id CONICETDig_70e8cfff2d4cdaaca03946d6a3e93956
oai_identifier_str oai:ri.conicet.gov.ar:11336/290754
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Verification of global and regional NWP models over South AmericaDe Elia, RamonHaiden, ThomasMatsudo, Cynthia MarianaOtero, FedericoGascón, EstíbalizCastro, LucíaMagnusson, LinusGodoy, AlejandroCoelho, CaioBechis, HernánCasati, BarbaraD Amen, Daniela LilianFrassoni, ArianeGalgano, SantiagoOsman, MarisolOsores, María SoledadRighetti, Silvina AndreaSalio, Paola VeronicaSaucedo, Marcos AdolfoGarcia Skabar, YaninaSpennemann, Pablo CristianStell, José LuisWedi, NilsREGIONAL MODELSSOUTH AMERICAVERIFICATIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1South America has received less attention from the global numerical weather prediction community than many other regions. This is reflected, for example, in its absence as a region in the standardised WMO verification score exchange. As a result, global modelling centres may have missed out on interesting scientific challenges, and potential insights, in a unique testing ground in one of the few land masses in the Southern Hemisphere. To address this situation, a pilot project was launched in early 2024 by the Working Group on Numerical Experimentation (WGNE) and the Joint Working Group on Forecast Verification Research (JWGFVR), partly in response to the requirements of the United Nations Early Warnings for All initiative (EW4All). This pilot project, led by the Argentine National Meteorological Service (SMN) and the European Centre for Medium Range Forecasting (ECMWF), aims to explore the performance of global and regional forecasts over South America and their potential as early warning tools. For the sake of simplicity, we have focused mainly on the territory of Argentina and on deterministic operational forecasts. This Technical Memorandum presents the first results of the pilot project, focusing on two perspectives: a general statistical verification of the ECMWF Integrated Forecasting System (IFS) control operational forecast, and an in-depth evaluation of model performance in three individual High Impact Weather (HIW) events which, due to their characteristics, are both of societal relevance and posing a challenge to models. Within the first perspective, temporally and/or spatially aggregated summary verification statistics are produced for upper air variables by comparing forecasts with their own analysis, and for surface variables by comparing surface forecast fields with SYNOP station data. In addition, the IFS deterministic operational forecast is compared with other global models and with a limited area model over the South America region. Within the second perspective, three individual case studies covering HIW events with very different characteristics are analysed: a convective storm causing severe wind damage and loss of life, a strong Zonda wind (Foehn) on the lee side of the Andes, and a prolonged heat wave.Fil: De Elia, Ramon. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Haiden, Thomas. European Centre For Medium Range Forecasting; Reino UnidoFil: Matsudo, Cynthia Mariana. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Otero, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Gascón, Estíbaliz. European Centre For Medium Range Forecasting; Reino UnidoFil: Castro, Lucía. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Magnusson, Linus. European Centre For Medium Range Forecasting; Reino UnidoFil: Godoy, Alejandro. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Coelho, Caio. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; BrasilFil: Bechis, Hernán. 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; ArgentinaFil: Casati, Barbara. Environment And Climate Change Canada; CanadáFil: D Amen, Daniela Lilian. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Frassoni, Ariane. Environment And Climate Change Canada; CanadáFil: Galgano, Santiago. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: 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. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; ArgentinaFil: Osores, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Righetti, Silvina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; ArgentinaFil: Salio, Paola Veronica. 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. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; ArgentinaFil: Saucedo, Marcos Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Garcia Skabar, Yanina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Spennemann, Pablo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Stell, José Luis. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; ArgentinaFil: Wedi, Nils. European Centre For Medium Range Forecasting; Reino UnidoEuropean Centre for Medium Range Weather Forecasts2025-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/290754De Elia, Ramon; Haiden, Thomas; Matsudo, Cynthia Mariana; Otero, Federico; Gascón, Estíbaliz ; et al.; Verification of global and regional NWP models over South America; European Centre for Medium Range Weather Forecasts; European Centre for Medium Range Forecasting; 928; 6-2025; 1-401012-6899CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.ecmwf.int/en/elibrary/81664-verification-global-and-regional-nwp-models-over-south-americainfo:eu-repo/semantics/altIdentifier/doi/10.21957/85fc99659cinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T15:50:26Zoai:ri.conicet.gov.ar:11336/290754instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-08-25 15:50:26.444CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Verification of global and regional NWP models over South America
title Verification of global and regional NWP models over South America
spellingShingle Verification of global and regional NWP models over South America
De Elia, Ramon
REGIONAL MODELS
SOUTH AMERICA
VERIFICATION
title_short Verification of global and regional NWP models over South America
title_full Verification of global and regional NWP models over South America
title_fullStr Verification of global and regional NWP models over South America
title_full_unstemmed Verification of global and regional NWP models over South America
title_sort Verification of global and regional NWP models over South America
dc.creator.none.fl_str_mv De Elia, Ramon
Haiden, Thomas
Matsudo, Cynthia Mariana
Otero, Federico
Gascón, Estíbaliz
Castro, Lucía
Magnusson, Linus
Godoy, Alejandro
Coelho, Caio
Bechis, Hernán
Casati, Barbara
D Amen, Daniela Lilian
Frassoni, Ariane
Galgano, Santiago
Osman, Marisol
Osores, María Soledad
Righetti, Silvina Andrea
Salio, Paola Veronica
Saucedo, Marcos Adolfo
Garcia Skabar, Yanina
Spennemann, Pablo Cristian
Stell, José Luis
Wedi, Nils
author De Elia, Ramon
author_facet De Elia, Ramon
Haiden, Thomas
Matsudo, Cynthia Mariana
Otero, Federico
Gascón, Estíbaliz
Castro, Lucía
Magnusson, Linus
Godoy, Alejandro
Coelho, Caio
Bechis, Hernán
Casati, Barbara
D Amen, Daniela Lilian
Frassoni, Ariane
Galgano, Santiago
Osman, Marisol
Osores, María Soledad
Righetti, Silvina Andrea
Salio, Paola Veronica
Saucedo, Marcos Adolfo
Garcia Skabar, Yanina
Spennemann, Pablo Cristian
Stell, José Luis
Wedi, Nils
author_role author
author2 Haiden, Thomas
Matsudo, Cynthia Mariana
Otero, Federico
Gascón, Estíbaliz
Castro, Lucía
Magnusson, Linus
Godoy, Alejandro
Coelho, Caio
Bechis, Hernán
Casati, Barbara
D Amen, Daniela Lilian
Frassoni, Ariane
Galgano, Santiago
Osman, Marisol
Osores, María Soledad
Righetti, Silvina Andrea
Salio, Paola Veronica
Saucedo, Marcos Adolfo
Garcia Skabar, Yanina
Spennemann, Pablo Cristian
Stell, José Luis
Wedi, Nils
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv REGIONAL MODELS
SOUTH AMERICA
VERIFICATION
topic REGIONAL MODELS
SOUTH AMERICA
VERIFICATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv South America has received less attention from the global numerical weather prediction community than many other regions. This is reflected, for example, in its absence as a region in the standardised WMO verification score exchange. As a result, global modelling centres may have missed out on interesting scientific challenges, and potential insights, in a unique testing ground in one of the few land masses in the Southern Hemisphere. To address this situation, a pilot project was launched in early 2024 by the Working Group on Numerical Experimentation (WGNE) and the Joint Working Group on Forecast Verification Research (JWGFVR), partly in response to the requirements of the United Nations Early Warnings for All initiative (EW4All). This pilot project, led by the Argentine National Meteorological Service (SMN) and the European Centre for Medium Range Forecasting (ECMWF), aims to explore the performance of global and regional forecasts over South America and their potential as early warning tools. For the sake of simplicity, we have focused mainly on the territory of Argentina and on deterministic operational forecasts. This Technical Memorandum presents the first results of the pilot project, focusing on two perspectives: a general statistical verification of the ECMWF Integrated Forecasting System (IFS) control operational forecast, and an in-depth evaluation of model performance in three individual High Impact Weather (HIW) events which, due to their characteristics, are both of societal relevance and posing a challenge to models. Within the first perspective, temporally and/or spatially aggregated summary verification statistics are produced for upper air variables by comparing forecasts with their own analysis, and for surface variables by comparing surface forecast fields with SYNOP station data. In addition, the IFS deterministic operational forecast is compared with other global models and with a limited area model over the South America region. Within the second perspective, three individual case studies covering HIW events with very different characteristics are analysed: a convective storm causing severe wind damage and loss of life, a strong Zonda wind (Foehn) on the lee side of the Andes, and a prolonged heat wave.
Fil: De Elia, Ramon. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Haiden, Thomas. European Centre For Medium Range Forecasting; Reino Unido
Fil: Matsudo, Cynthia Mariana. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Otero, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Gascón, Estíbaliz. European Centre For Medium Range Forecasting; Reino Unido
Fil: Castro, Lucía. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Magnusson, Linus. European Centre For Medium Range Forecasting; Reino Unido
Fil: Godoy, Alejandro. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Coelho, Caio. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Bechis, Hernán. 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
Fil: Casati, Barbara. Environment And Climate Change Canada; Canadá
Fil: D Amen, Daniela Lilian. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Frassoni, Ariane. Environment And Climate Change Canada; Canadá
Fil: Galgano, Santiago. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
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. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Osores, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Righetti, Silvina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina
Fil: Salio, Paola Veronica. 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. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Saucedo, Marcos Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Garcia Skabar, Yanina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Spennemann, Pablo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Stell, José Luis. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina
Fil: Wedi, Nils. European Centre For Medium Range Forecasting; Reino Unido
description South America has received less attention from the global numerical weather prediction community than many other regions. This is reflected, for example, in its absence as a region in the standardised WMO verification score exchange. As a result, global modelling centres may have missed out on interesting scientific challenges, and potential insights, in a unique testing ground in one of the few land masses in the Southern Hemisphere. To address this situation, a pilot project was launched in early 2024 by the Working Group on Numerical Experimentation (WGNE) and the Joint Working Group on Forecast Verification Research (JWGFVR), partly in response to the requirements of the United Nations Early Warnings for All initiative (EW4All). This pilot project, led by the Argentine National Meteorological Service (SMN) and the European Centre for Medium Range Forecasting (ECMWF), aims to explore the performance of global and regional forecasts over South America and their potential as early warning tools. For the sake of simplicity, we have focused mainly on the territory of Argentina and on deterministic operational forecasts. This Technical Memorandum presents the first results of the pilot project, focusing on two perspectives: a general statistical verification of the ECMWF Integrated Forecasting System (IFS) control operational forecast, and an in-depth evaluation of model performance in three individual High Impact Weather (HIW) events which, due to their characteristics, are both of societal relevance and posing a challenge to models. Within the first perspective, temporally and/or spatially aggregated summary verification statistics are produced for upper air variables by comparing forecasts with their own analysis, and for surface variables by comparing surface forecast fields with SYNOP station data. In addition, the IFS deterministic operational forecast is compared with other global models and with a limited area model over the South America region. Within the second perspective, three individual case studies covering HIW events with very different characteristics are analysed: a convective storm causing severe wind damage and loss of life, a strong Zonda wind (Foehn) on the lee side of the Andes, and a prolonged heat wave.
publishDate 2025
dc.date.none.fl_str_mv 2025-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/290754
De Elia, Ramon; Haiden, Thomas; Matsudo, Cynthia Mariana; Otero, Federico; Gascón, Estíbaliz ; et al.; Verification of global and regional NWP models over South America; European Centre for Medium Range Weather Forecasts; European Centre for Medium Range Forecasting; 928; 6-2025; 1-40
1012-6899
CONICET Digital
CONICET
url http://hdl.handle.net/11336/290754
identifier_str_mv De Elia, Ramon; Haiden, Thomas; Matsudo, Cynthia Mariana; Otero, Federico; Gascón, Estíbaliz ; et al.; Verification of global and regional NWP models over South America; European Centre for Medium Range Weather Forecasts; European Centre for Medium Range Forecasting; 928; 6-2025; 1-40
1012-6899
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.ecmwf.int/en/elibrary/81664-verification-global-and-regional-nwp-models-over-south-america
info:eu-repo/semantics/altIdentifier/doi/10.21957/85fc99659c
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv European Centre for Medium Range Weather Forecasts
publisher.none.fl_str_mv European Centre for Medium Range Weather Forecasts
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1874775867930968064
score 13.24418