@Article{TeodoroReboEsco:2019:CaBaDu,
author = "Teodoro, Thales Alves and Reboita, Michelle Sim{\~o}es and
Escobar, Gustavo Carlos Juan",
affiliation = "{Universidade Federal de Itajub{\'a} (UNIFEI)} and {Universidade
Federal de Itajub{\'a} (UNIFEI)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Caracteriza{\c{c}}{\~a}o da banda dupla da Zona de
Converg{\^e}ncia Intertropical (ZCIT) no Oceano Atl{\^a}ntico",
journal = "Anu{\'a}rio do Instituto de Geoci{\^e}ncias",
year = "2019",
volume = "42",
number = "2",
pages = "282--298",
keywords = "Atl{\^a}ntico Tropical, Composi{\c{c}}{\~o}es, Vari{\'a}veis
Atmosf{\'e}ricas, Tropical Atlantic, Compositions, Atmospheric
Variables.",
abstract = "V{\'a}rios estudos t{\^e}m documentado a presen{\c{c}}a da
banda dupla (BD) da Zona de Converg{\^e}ncia Intertropical (ZCIT)
no oceano Pac{\'{\i}}fico, enquanto que no oceano
Atl{\^a}ntico, mesmo sabendo-se da exist{\^e}ncia desse
fen{\^o}meno, praticamente n{\~a}o h{\'a} literatura. Diante
disso, o presente estudo tem como objetivos: identificar a
ocorr{\^e}ncia da BD no oceano Atl{\^a}ntico Tropical nas
esta{\c{c}}{\~o}es de ver{\~a}o e outono, no per{\'{\i}}odo
de 2010 a 2017; determinar composi{\c{c}}{\~o}es de diferentes
vari{\'a}veis atmosf{\'e}ricas para dias com BD e para dias sem
BD a fim de indicar diferen{\c{c}}as entre
composi{\c{c}}{\~o}es e avaliar uma hip{\'o}tese que tenta
explicar o processo de forma{\c{c}}{\~a}o das BDs no oceano
Atl{\^a}ntico. Para identificar os casos de BD foram utilizadas
as cartas sin{\'o}ticas de superf{\'{\i}}cie elaboradas pelo
Grupo de Previs{\~a}o do Tempo (GPT) do Centro de Previs{\~a}o
de Tempo e Estudos Clim{\'a}ticos do Instituto Nacional de
Pesquisas Espaciais (CPTEC/INPE), imagens de sat{\'e}lite e dados
da rean{\'a}lise European Centre for Medium-Range Weather
Forecasts (ECMWF) Re-Analysis (ERA-Interim). Entre os resultados
t{\^e}m-se que as BD s{\~a}o mais frequentes e duradouras nos
meses de mar{\c{c}}o e abril e que as duas bandas se distanciam
em cerca de 4º de latitude. Nas composi{\c{c}}{\~o}es dos casos
de BD, as vari{\'a}veis converg{\^e}ncia de massa a 10 metros de
altura e radia{\c{c}}{\~a}o de onda longa emergente s{\~a}o as
que melhor destacam esse fen{\^o}meno. Na compara{\c{c}}{\~a}o
das composi{\c{c}}{\~o}es dos casos com e sem BD dessas
vari{\'a}veis, predominam anomalias negativas e estatisticamente
significativas a sul do equador. A hip{\'o}tese testada para
explicar a forma{\c{c}}{\~a}o das BD no oceano Atl{\^a}ntico
Tropical foi parcialmente comprovada. ABSTRACT: Several studies
have documented the presence of double band (DB) of the
Intertropical Convergence Zone (ITCZ) in the Pacific Ocean, while
in the Atlantic Ocean, even though this phenomenon is known, there
is practically no literature. Therefore, the purposes of this
study are: to identify the occurrence of DB in the tropical
Atlantic Ocean in the summer and autumn seasons, from 2010 to
2017; to perform a composition analysis to different atmospheric
variables considering events with DB and events without DB in
order to showing the difference between them and to evaluate a
hypothesis that tries to explain the formation process of DB in
the Atlantic Ocean. To identify the DB cases, the synoptic surface
charts prepared by the Weather Prediction Group (GPT) of the
Center for Weather Forecasting and Climate Studies of the National
Institute of Space Research (CPTEC/INPE), satellite images and the
European Centre for Medium- -Range Weather Forecasts (ECMWF)
Re-Analysis (ERA-Interim) reanalysis were used. The results show
that the DBs are more frequent and lasting in March and April and
that the two bands are distant from each other in ~ 4º of
latitude. In the DB composite, the variables 10-m mass convergence
and outgoing longwave radiation represent better the DB than the
other variables. In the comparison of the composites for events
with and without DB of the quoted variables, there are
statistically significant negative anomalies southward equator.
The hypothesis tested to explain the formation of DB in the
Tropical Atlantic Ocean was partially proven.",
doi = "10.11137/2019_2_282_298",
url = "http://dx.doi.org/10.11137/2019_2_282_298",
issn = "0101-9759",
language = "en",
targetfile = "Teodoro_caracterizacao.pdf",
urlaccessdate = "29 mar. 2024"
}