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dc.creatorMaldonado Mora, Tito José
dc.creatorRutgersson, Anna
dc.creatorAmador Astúa, Jorge Alberto
dc.creatorAlfaro Martínez, Eric J.
dc.creatorClaremar, Björn
dc.date.accessioned2017-11-02T15:47:41Z
dc.date.available2017-11-02T15:47:41Z
dc.date.issued2016
dc.identifier.citationhttp://onlinelibrary.wiley.com/doi/10.1002/joc.4472/abstractes_ES
dc.identifier.issn0899-8418
dc.identifier.issn1097-0088
dc.identifier.urihttps://hdl.handle.net/10669/73429
dc.description.abstractAn index capturing the anomalies of the zonal wind at 925 hPa from 1950 to 2010 was defined to explore the relationship between the fluctuations of the Caribbean low-level jet (CLLJ) and the main climate variability modes affecting the Intra-Americas Sea Region. El Niño Southern Oscillation (ENSO) events, here defined using the Niño 3.4 index, are found to be the most important variability modes for the jet anomalies, in agreement with previous studies. However, the Pacific Decadal Oscillation (PDO) and the Pacific/North American (PNA) teleconnection pattern also show significant correlations with the CLLJ anomaly index during February. The North Atlantic Oscillation (NAO) and the Arctic Oscillation (AO) reveal a possible interaction with the jet anomalies that could be connected with the cold fronts and cold air surges arriving to the Caribbean basin from the Northern Hemisphere during winter. A composite technique is used to explain the correlations with the Pacific indexes. We found that ENSO events are connected to CLLJ anomalies by modulating the sea-level pressure (SLP) near the east coast of the United States and the Aleutian Low. The pattern displayed by the SLP anomalies (SLPa) is also associated with the PNA. During warm (cold) ENSO phases, negative (positive) anomalies in the SLP field over the east coast of North America produce cyclonic (anticyclonic) circulations at low levels. However, the ENSO signal in the SLPa and the PNA pattern are modulated by the phases of the PDO. Results indicate that when the ENSO and PDO are in phase (out of phase), the SLPa signal is enhanced (weakened or cancelled), affecting the CLLJ anomalies in both direction and intensity, also changing the spatial distribution of precipitation.es_ES
dc.description.sponsorshipSwedish InternationalDevelopment Agency/[]/SIDA/Sueciaes_ES
dc.description.sponsorshipInternational Science Programme/[]/ISP/Sueciaes_ES
dc.description.sponsorshipUniversidad de Costa Rica/[VI-805-A9-532]/UCR/Costa Ricaes_ES
dc.language.isoen_USes_ES
dc.sourceInternational Journal of Climatology; Volumen 36, Número 4. 2016es_ES
dc.subjectEl Niño Southern Oscillationes_ES
dc.subjectPacific Decadal Oscillationes_ES
dc.subjectCaribbean low-level jetes_ES
dc.subjectClimate variabilityes_ES
dc.subjectENSOnon-linearitieses_ES
dc.titleVariability of the Caribbean low-level jet during borealwinter: large-scale forcingses_ES
dc.typeartículo científicoes_ES
dc.identifier.doi10.1002/joc.4472
dc.description.procedenceUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencias del Mar y Limnología (CIMAR)es_ES


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