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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/17376
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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 Técnicas2025-09-03T10:06:08Zoai: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:34982025-09-03 10:06:08.813CONICET 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 |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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13.13397 |