@Article{CerónKaAnAvSoSo:2021:PaAtMu,
author = "Cer{\'o}n, Wilmar L. and Kayano, Mary Toshie and Andreoli, Rita
V. and Avila Diaz, Alvaro and Souza, Itamara Parente de and Souza,
Rodrigo A. F.",
affiliation = "{Universidad del Valle} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Universidade do Estado do Amazonas (UEA)}
and {Universidade Federal de Itajub{\'a} (UNIFEI)} and {Instituto
Nacional de Pesquisas da Amaz{\^o}nia (INPA)} and {Universidade
do Estado do Amazonas (UEA)}",
title = "Pacific and atlantic multidecadal variability relations with the
choco and caribbean low-level jets during the 1900–2015 period",
journal = "Atmosphere",
year = "2021",
volume = "12",
number = "9",
pages = "e1120",
month = "Sept.",
keywords = "Atlantic multidecadal oscillation, Climate variability,
Northwestern South America, Pacific decadal oscillation, Twentieth
century reanalysis.",
abstract = "This study analyzes the variability of the Choco jet (CJ) and
Caribbean low-level jet (CLLJ) with consideration of the
simultaneous Pacific interdecadal oscillation (PDO) and Atlantic
multidecadal oscillation (AMO) low-frequency mean states and their
effects on the atmospheric circulation and rainfall in
northwestern South America and Central America for the 19002015
period, during the seasons with the highest intensities of the CJ
(SeptemberNovember (SON)) and the CLLJ (JuneAugust). Variations in
the sea surface temperature (SST) anomaly positioning in the
eastern Pacific, tropical North Atlantic (TNA)/Caribbean Sea
during different mean states restrict the anomalous circulation,
and, consequently, the intensity of the CJ and CLLJ. During the
warm AMO (WAMO)/cold PDO (CPDO), the SST gradient from the
tropical Pacific into the TNA, accompanied by a cyclonic
circulation near the east coast of the Americas, intensifies the
westeast circulation in the region, strengthening the CJ and
weakening the CLLJ during SON such that rainfall increases over
Colombia, Central America and in adjacent oceans. During the cold
AMO (CAMO)/warm PDO (WPDO) phase, a relative east/west SST
gradient occurs in TNA, consistent with a cyclonic circulation in
western TNA, establishing an anomalous southwestnorthwestward
circulation from the eastern Pacific into the Caribbean basin,
forming a well-configured CJ, increasing precipitation over
Central America and its adjacent oceans. For the CLLJ, during CAMO
phases, the anticyclonic circulations extended over most of the
TNA favor its intensification from 30\◦ W to the Caribbean
Sea. In contrast, during WAMO, the cyclonic circulation near the
east coast of the United States restricts its intensification to
the Caribbean Sea region. To the best of our knowledge, the
results presented here are new and might be useful in atmospheric
modeling and extreme event studies.",
doi = "10.3390/atmos12091120",
url = "http://dx.doi.org/10.3390/atmos12091120",
issn = "2073-4433",
language = "en",
targetfile = "ceron_pacific.pdf",
urlaccessdate = "20 maio 2024"
}