Mechanisms associated with large daily rainfall events in Northeast Brazil

Autores
Liebmann, Brant; Kiladis, George N.; Allured, Dave; Vera, Carolina Susana; Jones, Charles; Carvalho, Leila M. V.; Bladé, Ileana; Gonzalez, Paula Leticia Manuela
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The mechanisms resulting in large daily rainfall events in Northeast Brazil are analyzed using data filtering to exclude periods longer than 30 days. Composites of circulation fields that include all independent events do not reveal any obvious forcing mechanisms as multiple patterns contribute to Northeast Brazil precipitation variability. To isolate coherent patterns, subsets of events are selected based on anomalies that precede the Northeast Brazil precipitation events at different locations. The results indicate that at 108S, 408W, the area of lowest annual rainfall in Brazil, precipitation occurs mainly in association with trailing midlatitude synoptic wave trains originating in either hemisphere. Closer to the equator at 58S, 37.58W, an additional convection precursor is found to the west, with a spatial structure consistent with that of a Kelvin wave. Although these two sites are located within only several hundred kilometers of each other and the midlatitude patterns that induce precipitation appear to be quite similar, the dates on which large precipitation anomalies occur at each location are almost entirely independent, pointing to separate forcing mechanisms.
Fil: Liebmann, Brant. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados Unidos
Fil: Kiladis, George N.. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados Unidos
Fil: Allured, Dave. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados Unidos
Fil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; Argentina
Fil: Jones, Charles. University of California; Estados Unidos
Fil: Carvalho, Leila M. V.. University of California; Estados Unidos. Universidade de Sao Paulo; Brasil
Fil: Bladé, Ileana. Universidad de Barcelona; España
Fil: Gonzalez, Paula Leticia Manuela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; Argentina
Materia
South America
Extreme Events
Rainfall
Kelvin Waves
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/17376
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mechanisms associated with large daily rainfall events in Northeast BrazilLiebmann, BrantKiladis, George N.Allured, DaveVera, Carolina SusanaJones, CharlesCarvalho, Leila M. V.Bladé, IleanaGonzalez, Paula Leticia ManuelaSouth AmericaExtreme EventsRainfallKelvin Waveshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The mechanisms resulting in large daily rainfall events in Northeast Brazil are analyzed using data filtering to exclude periods longer than 30 days. Composites of circulation fields that include all independent events do not reveal any obvious forcing mechanisms as multiple patterns contribute to Northeast Brazil precipitation variability. To isolate coherent patterns, subsets of events are selected based on anomalies that precede the Northeast Brazil precipitation events at different locations. The results indicate that at 108S, 408W, the area of lowest annual rainfall in Brazil, precipitation occurs mainly in association with trailing midlatitude synoptic wave trains originating in either hemisphere. Closer to the equator at 58S, 37.58W, an additional convection precursor is found to the west, with a spatial structure consistent with that of a Kelvin wave. Although these two sites are located within only several hundred kilometers of each other and the midlatitude patterns that induce precipitation appear to be quite similar, the dates on which large precipitation anomalies occur at each location are almost entirely independent, pointing to separate forcing mechanisms.Fil: Liebmann, Brant. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados UnidosFil: Kiladis, George N.. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados UnidosFil: Allured, Dave. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados UnidosFil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; ArgentinaFil: Jones, Charles. University of California; Estados UnidosFil: Carvalho, Leila M. V.. University of California; Estados Unidos. Universidade de Sao Paulo; BrasilFil: Bladé, Ileana. Universidad de Barcelona; EspañaFil: Gonzalez, Paula Leticia Manuela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; ArgentinaAmerican Meteorological Society2011-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17376Liebmann, Brant; Kiladis, George N.; Allured, Dave; Vera, Carolina Susana; Jones, Charles; et al.; Mechanisms associated with large daily rainfall events in Northeast Brazil; American Meteorological Society; Journal Of Climate; 24; 1-2011; 376-3960894-8755enginfo:eu-repo/semantics/altIdentifier/doi/10.1175/2010JCLI3457.1info:eu-repo/semantics/altIdentifier/url/http://journals.ametsoc.org/doi/abs/10.1175/2010JCLI3457.1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:29:06Zoai:ri.conicet.gov.ar:11336/17376instacron: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:34982025-09-29 10:29:06.707CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mechanisms associated with large daily rainfall events in Northeast Brazil
title Mechanisms associated with large daily rainfall events in Northeast Brazil
spellingShingle Mechanisms associated with large daily rainfall events in Northeast Brazil
Liebmann, Brant
South America
Extreme Events
Rainfall
Kelvin Waves
title_short Mechanisms associated with large daily rainfall events in Northeast Brazil
title_full Mechanisms associated with large daily rainfall events in Northeast Brazil
title_fullStr Mechanisms associated with large daily rainfall events in Northeast Brazil
title_full_unstemmed Mechanisms associated with large daily rainfall events in Northeast Brazil
title_sort Mechanisms associated with large daily rainfall events in Northeast Brazil
dc.creator.none.fl_str_mv Liebmann, Brant
Kiladis, George N.
Allured, Dave
Vera, Carolina Susana
Jones, Charles
Carvalho, Leila M. V.
Bladé, Ileana
Gonzalez, Paula Leticia Manuela
author Liebmann, Brant
author_facet Liebmann, Brant
Kiladis, George N.
Allured, Dave
Vera, Carolina Susana
Jones, Charles
Carvalho, Leila M. V.
Bladé, Ileana
Gonzalez, Paula Leticia Manuela
author_role author
author2 Kiladis, George N.
Allured, Dave
Vera, Carolina Susana
Jones, Charles
Carvalho, Leila M. V.
Bladé, Ileana
Gonzalez, Paula Leticia Manuela
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv South America
Extreme Events
Rainfall
Kelvin Waves
topic South America
Extreme Events
Rainfall
Kelvin Waves
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The mechanisms resulting in large daily rainfall events in Northeast Brazil are analyzed using data filtering to exclude periods longer than 30 days. Composites of circulation fields that include all independent events do not reveal any obvious forcing mechanisms as multiple patterns contribute to Northeast Brazil precipitation variability. To isolate coherent patterns, subsets of events are selected based on anomalies that precede the Northeast Brazil precipitation events at different locations. The results indicate that at 108S, 408W, the area of lowest annual rainfall in Brazil, precipitation occurs mainly in association with trailing midlatitude synoptic wave trains originating in either hemisphere. Closer to the equator at 58S, 37.58W, an additional convection precursor is found to the west, with a spatial structure consistent with that of a Kelvin wave. Although these two sites are located within only several hundred kilometers of each other and the midlatitude patterns that induce precipitation appear to be quite similar, the dates on which large precipitation anomalies occur at each location are almost entirely independent, pointing to separate forcing mechanisms.
Fil: Liebmann, Brant. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados Unidos
Fil: Kiladis, George N.. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados Unidos
Fil: Allured, Dave. National Oceanic and Atmospheric Administration. Earth System Research Laboratory; Estados Unidos
Fil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; Argentina
Fil: Jones, Charles. University of California; Estados Unidos
Fil: Carvalho, Leila M. V.. University of California; Estados Unidos. Universidade de Sao Paulo; Brasil
Fil: Bladé, Ileana. Universidad de Barcelona; España
Fil: Gonzalez, Paula Leticia Manuela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; Argentina
description The mechanisms resulting in large daily rainfall events in Northeast Brazil are analyzed using data filtering to exclude periods longer than 30 days. Composites of circulation fields that include all independent events do not reveal any obvious forcing mechanisms as multiple patterns contribute to Northeast Brazil precipitation variability. To isolate coherent patterns, subsets of events are selected based on anomalies that precede the Northeast Brazil precipitation events at different locations. The results indicate that at 108S, 408W, the area of lowest annual rainfall in Brazil, precipitation occurs mainly in association with trailing midlatitude synoptic wave trains originating in either hemisphere. Closer to the equator at 58S, 37.58W, an additional convection precursor is found to the west, with a spatial structure consistent with that of a Kelvin wave. Although these two sites are located within only several hundred kilometers of each other and the midlatitude patterns that induce precipitation appear to be quite similar, the dates on which large precipitation anomalies occur at each location are almost entirely independent, pointing to separate forcing mechanisms.
publishDate 2011
dc.date.none.fl_str_mv 2011-01
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/11336/17376
Liebmann, Brant; Kiladis, George N.; Allured, Dave; Vera, Carolina Susana; Jones, Charles; et al.; Mechanisms associated with large daily rainfall events in Northeast Brazil; American Meteorological Society; Journal Of Climate; 24; 1-2011; 376-396
0894-8755
url http://hdl.handle.net/11336/17376
identifier_str_mv Liebmann, Brant; Kiladis, George N.; Allured, Dave; Vera, Carolina Susana; Jones, Charles; et al.; Mechanisms associated with large daily rainfall events in Northeast Brazil; American Meteorological Society; Journal Of Climate; 24; 1-2011; 376-396
0894-8755
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1175/2010JCLI3457.1
info:eu-repo/semantics/altIdentifier/url/http://journals.ametsoc.org/doi/abs/10.1175/2010JCLI3457.1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Meteorological Society
publisher.none.fl_str_mv American Meteorological Society
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
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score 13.070432

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