@Article{DeccoTorrPezzLand:2018:ReTrIn,
author = "Decco, Hatsue Takanaca de and Torres J{\'u}nior, Audalio Rebelo
and Pezzi, Luciano Ponzi and Landau, Luiz",
affiliation = "{Universidade Federal do Rio de Janeiro (UFRJ)} and {Universidade
Federal do Rio de Janeiro (UFRJ)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Universidade Federal do Rio de
Janeiro (UFRJ)}",
title = "Revisiting tropical instability wave variability in the Atlantic
ocean using SODA reanalysis",
journal = "Ocean Dynamics",
year = "2018",
volume = "68",
number = "3",
pages = "327--345",
month = "Mar.",
keywords = "Atlantic Tropical instabilities, Equatorial Atlantic, Equatorial
waves.",
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 (SODA) 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. In SODA, barotropic instability acts as the
mechanism that feeds and extracts energy to/from TIWs at
equatorial Atlantic. Baroclinic instability is the main mechanism
that extracts energy from TIWs to the equatorial circulation north
of the Equator. All TIW patterns of variability were observed
western of 10A degrees 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 = "10.1007/s10236-017-1128-2",
url = "http://dx.doi.org/10.1007/s10236-017-1128-2",
issn = "1616-7341 and 1616-7228",
label = "self-archiving-INPE-MCTIC-GOV-BR",
language = "en",
targetfile = "decco_revisiting.pdf",
urlaccessdate = "15 jun. 2024"
}