@Article{CerónAndrKayaAvil:2021:RoEaPa,
               author = "Cer{\'o}n, Wilmar L. and Andreoli, Rita Val{\'e}ria and Kayano, 
                         Mary Toshie and Avila-Diaz, Alvaro",
          affiliation = "{Universidad del Valle} and {Universidade do Estado do Amazonas 
                         (UEA)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade Federal de Vi{\c{c}}osa (UFV)}",
                title = "Role of the eastern Pacific\−Caribbean Sea SST gradient in 
                         the Choco low-level jet variations from 1900\−2015",
              journal = "Climate Research",
                 year = "2021",
               volume = "83",
                pages = "61--74",
             keywords = "Eastern Pacific\−,,Caribbean Sea SST gradient · Choco 
                         low-level jet · Caribbean low-level jet · Precipitation · Atlantic 
                         Multidecadal Oscillation.",
             abstract = "In this article, we propose a novel approach for assessing the 
                         effects of sea surface temperature (SST) variations in the eastern 
                         Pacific and the Caribbean Sea on the Choco low-level jet (CJ) 
                         intensity over the 1900\−2015 period that involved defining 
                         the interbasin gradient index (IGR) between these 2 oceanic 
                         basins. We also studied the effects on rainfall in northwestern 
                         South America and Central America in the high CJ season during 
                         September\−November (SON). Wavelet coherence analysis 
                         showed high consistency between CJ and IGR on an interannual scale 
                         of 2\− 8 yr. Precipitation increased over central, western, 
                         and northern Colombia and most of Central America during strong CJ 
                         (SCJ) and decreased during weak CJ (WCJ) events, which occurred, 
                         respectively, in the negative IGR (NIGR) and positive IGR (PIGR) 
                         phases. NIGR is associated with anomalous cooling in the tropical 
                         Pacific and warming in the equatorial Atlantic; opposite patterns 
                         are observed during PIGR. Also, the CJ and the Caribbean low-level 
                         jet (CLLJ) showed reversed intensities such that as one 
                         strengthened, the other weakened and vice versa. Our results 
                         indicate that the low-frequency SST anomalies in the North 
                         Atlantic affect the IGR and low-level jet intensities associated 
                         with changes in large-scale circulation modulated by the Atlantic 
                         multidecadal oscillation (AMO). Indeed, positive precipitation 
                         anomalies during the SCJ under NIGR were more accentuated and 
                         extensive in the warm AMO (WAMO) than in the cold AMO (CAMO) 
                         phase. Conversely, negative precipitation anomalies during WCJ 
                         under PIGR were more accentuated and extensive in the CAMO than in 
                         the WAMO.",
                  doi = "10.3354/cr01633",
                  url = "http://dx.doi.org/10.3354/cr01633",
                 issn = "0936-577X",
             language = "en",
           targetfile = "ceron_role.pdf",
        urlaccessdate = "20 maio 2024"
}