The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism

Data from the Global Precipitation Climatology Project covering Central America, the Caribbean Sea, the eastern tropical Pacific and northern South America are used to compute four indexes that describe characteristics of the Inter-Tropical Convergence Zone: the latitudinal center of mass of precipi...

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Detalles Bibliográficos
Autores: Hidalgo León, Hugo G., Durán Quesada, Ana María, Amador Astúa, Jorge Alberto, Alfaro Martínez, Eric J.
Tipo de recurso: artículo
Fecha de publicación:2015
País:Costa Rica
Institución:Universidad de Costa Rica
Repositorio:Kérwá
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/29839
Acceso en línea:http://onlinelibrary.wiley.com/doi/10.1111/geoa.12085/abstract
https://hdl.handle.net/10669/29839
Access Level:acceso embargado
Palabra clave:Caribbean low-level jet
Moisture transport
Central America climatology
Atlantic Ocean
Pacific Ocean
Western Hemisphere Warm Pool
Precipitation
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dc.title.es_ES.fl_str_mv The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism
title The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism
spellingShingle The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism
Hidalgo León, Hugo G.
Caribbean low-level jet
Moisture transport
Central America climatology
Atlantic Ocean
Pacific Ocean
Western Hemisphere Warm Pool
Precipitation
title_short The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism
title_full The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism
title_fullStr The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism
title_full_unstemmed The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism
title_sort The Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanism
dc.creator.none.fl_str_mv Hidalgo León, Hugo G.
Durán Quesada, Ana María
Amador Astúa, Jorge Alberto
Alfaro Martínez, Eric J.
author Hidalgo León, Hugo G.
author_facet Hidalgo León, Hugo G.
Durán Quesada, Ana María
Amador Astúa, Jorge Alberto
Alfaro Martínez, Eric J.
author_role author
author2 Durán Quesada, Ana María
Amador Astúa, Jorge Alberto
Alfaro Martínez, Eric J.
author2_role author
author
author
dc.subject.es_ES.fl_str_mv Caribbean low-level jet
Moisture transport
Central America climatology
Atlantic Ocean
Pacific Ocean
Western Hemisphere Warm Pool
Precipitation
topic Caribbean low-level jet
Moisture transport
Central America climatology
Atlantic Ocean
Pacific Ocean
Western Hemisphere Warm Pool
Precipitation
description Data from the Global Precipitation Climatology Project covering Central America, the Caribbean Sea, the eastern tropical Pacific and northern South America are used to compute four indexes that describe characteristics of the Inter-Tropical Convergence Zone: the latitudinal center of mass of precipitation, the longitudinal center of mass of precipitation, the average precipitation in a region bounded by 10° S–25° N and 100° W–55° W, and the spread of the precipitation patterns.Avery strong correlation is found between summer latitudinal center of mass and a summer index of the Caribbean Low-Level Jet suggesting connections between Pacific and Caribbean climatic processes. The sign of the correlation implies that when the jet is stronger (weaker) there is a lower (higher) latitudinal center of mass and at the same time less (more) precipitation in the Pacific slope of Central America. The connection between the Caribbean and Pacific climate is not only related to high-level wind convergence, but it is proposed here that local convection and the establishment of a zonal circulation may be playing a role in the process. The circulation seems to be consistent during years when latitudinal center of mass is lower than normal, apparently reinforcing the jet, and presents weaker strength during years of high latitudinal center of mass. The proposed mechanism is explained in some detail.
publishDate 2015
dc.date.issued.none.fl_str_mv 2015-01-12
dc.date.accessioned.none.fl_str_mv 2017-05-26T20:57:03Z
dc.date.available.none.fl_str_mv 2017-05-26T20:57:03Z
dc.type.none.fl_str_mv artículo original
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info:eu-repo/semantics/article
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dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10669/29839
dc.identifier.doi.none.fl_str_mv 10.1111/geoa.12085
url http://onlinelibrary.wiley.com/doi/10.1111/geoa.12085/abstract
https://hdl.handle.net/10669/29839
identifier_str_mv 0272-3646
10.1111/geoa.12085
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dc.source.es_ES.fl_str_mv Physical Geography; Volumen 97. 2015
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spelling Hidalgo León, Hugo G.416e4ac6-79d8-42c8-80c6-9736d1278bbb600Durán Quesada, Ana Maríaa0798f13-5c41-4319-9351-0133ac03eb51600Amador Astúa, Jorge Alberto01c375a2-bce8-42eb-8443-1b68b5ec1393600Alfaro Martínez, Eric J.44321b12-4f18-4e60-9c71-e49f26b7d4d36002017-05-26T20:57:03Z2017-05-26T20:57:03Z2015-01-12http://onlinelibrary.wiley.com/doi/10.1111/geoa.12085/abstract0272-3646https://hdl.handle.net/10669/2983910.1111/geoa.12085Data from the Global Precipitation Climatology Project covering Central America, the Caribbean Sea, the eastern tropical Pacific and northern South America are used to compute four indexes that describe characteristics of the Inter-Tropical Convergence Zone: the latitudinal center of mass of precipitation, the longitudinal center of mass of precipitation, the average precipitation in a region bounded by 10° S–25° N and 100° W–55° W, and the spread of the precipitation patterns.Avery strong correlation is found between summer latitudinal center of mass and a summer index of the Caribbean Low-Level Jet suggesting connections between Pacific and Caribbean climatic processes. The sign of the correlation implies that when the jet is stronger (weaker) there is a lower (higher) latitudinal center of mass and at the same time less (more) precipitation in the Pacific slope of Central America. The connection between the Caribbean and Pacific climate is not only related to high-level wind convergence, but it is proposed here that local convection and the establishment of a zonal circulation may be playing a role in the process. The circulation seems to be consistent during years when latitudinal center of mass is lower than normal, apparently reinforcing the jet, and presents weaker strength during years of high latitudinal center of mass. The proposed mechanism is explained in some detail.Universidad de Costa Rica/[805-B3-413]/UCR/Costa RicaUniversidad de Costa Rica/[808-A9-180]/UCR/Costa RicaUniversidad de Costa Rica/[805-A9-532]/UCR/Costa RicaUniversidad de Costa Rica/[805-B3-600]/UCR/Costa RicaUniversidad de Costa Rica/[808-B0-654]/UCR/Costa RicaUniversidad de Costa Rica/[805-B0-065]/UCR/Costa RicaUniversidad de Costa Rica/[805-B4-227]/UCR/Costa RicaUniversidad de Costa Rica/[805-A7-002]/UCR/Costa RicaUniversidad de Costa Rica/[805-A9-224]/UCR/Costa RicaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigaciones Geofísicas (CIGEFI)en_USacceso embargadohttp://purl.org/coar/access_right/c_f1cfinfo:eu-repo/semantics/embargoedAccessPhysical Geography; Volumen 97. 2015reponame:Kérwáinstname:Universidad de Costa Ricainstacron:UCRCaribbean low-level jetMoisture transportCentral America climatologyAtlantic OceanPacific OceanWestern Hemisphere Warm PoolPrecipitationThe Caribbean Low-Level Jet, the Inter-Tropical Convergence Zone and Precipitation Patterns in the Intra-Americas Sea: A Proposed Dynamical Mechanismartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleTHUMBNAIL2015_CLLJ_MECANISM.pdf.jpg2015_CLLJ_MECANISM.pdf.jpgGenerated Thumbnailimage/jpeg4806https://www.kerwa.ucr.ac.cr/bitstreams/09856c88-848e-4224-9a44-fad88875f9ba/download3bfe71dd0640b036f58fad90c8c54692MD54TEXT2015_CLLJ_MECANISM.pdf.txt2015_CLLJ_MECANISM.pdf.txtExtracted texttext/plain52146https://www.kerwa.ucr.ac.cr/bitstreams/64911f01-9eb4-4496-87b2-89c8130f8bcc/download176fd64b775faeb6e0e75aa2e9930798MD53ORIGINAL2015_CLLJ_MECANISM.pdf2015_CLLJ_MECANISM.pdfVersión finalapplication/pdf2271510https://www.kerwa.ucr.ac.cr/bitstreams/e7c6de52-0d36-4f83-b8e5-f7c0f9253f02/download3a2e2056dac379d711fb7336ee2235b2MD51LICENSElicense.txtlicense.txttext/plain; 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