@Article{DeccoTorrPezzLand:2016:ReTrIn,
author = "Decco, Hatsue Takanaca de and Torres Junior, Audalio Rebelo and
Pezzi, Luciano Ponzi and Landau, Luiz",
affiliation = "{Laborat{\'o}rio de M{\'e}todos Computacionais em Engenharia
(LAMCE)} and {} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Laborat{\'o}rio de M{\'e}todos Computacionais em
Engenharia (LAMCE)}",
title = "Revisiting tropical instability wave variability in the Atlantic
Ocean using SODA reanalysis",
journal = "Ocean Science Discussions",
year = "2016",
volume = "1",
pages = "1--30",
keywords = "Tropical Instability Waves, Tropical Atlantic Ocean, Ondas de
Instabilidade Tropical.",
abstract = "The spatial and temporal variability of energy exchange in
Tropical Instability Waves (TIWs) in the Atlantic Ocean were
investigated. A spectral analysis was used to filter the 5-day
mean results from Simple Ocean Data Assimilation reanalysis
spanning from 1958 to 2008. TIWs were filtered over periods of 15
to 60 days and between wavelengths of 4 and 20 longitude degrees.
The main approach of this study was the use of bidirectionally
filtered TIW time series as the perturbation fields, and the
difference in these time series from the SODA total results was
considered to be the basic state for energetics analysis. The main
result was that the annual cycle (period of ~\ 360 days)
was the main source of variability of the waves, and the
semi-annual cycle (period of ~\ 180 days) was a secondary
variation, which indicated that TIWs occurred throughout the year
but with intensity that varies seasonally. Barotropic instability
acts as the mechanism that feeds and extracts energy to/from TIWs
as alternate zonal bands at equatorial Atlantic. Baroclinic
instability is the main mechanism that extracts energy from TIWs
to the equatorial circulation north of Equator. All TIW patterns
of variability were observed at west of ~\ 10º\ W.
The present study reveals new evidences regarding TIW variability
and suggests that future investigations should include a detailed
description of TIW dynamics as part of Atlantic Ocean equatorial
circulation.",
doi = "10.5194/os-2016-84",
url = "http://dx.doi.org/10.5194/os-2016-84",
issn = "1812-0806",
label = "lattes: 9168878830863753 3
TakanacadeDeccoRebePonzLand:2016:ReTrIn",
language = "en",
targetfile = "takanaca_revisiting.pdf",
urlaccessdate = "28 abr. 2024"
}