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 ~\ 10\ 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 
                  doi = "10.5194/os-2016-84",
                  url = "http://dx.doi.org/10.5194/os-2016-84",
                 issn = "1812-0806",
                label = "lattes: 9168878830863753 3 
             language = "en",
           targetfile = "takanaca_revisiting.pdf",
        urlaccessdate = "25 jan. 2021"