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@MastersThesis{Reis:2020:EsOnIn,
               author = "Reis, Giullian N{\'{\i}}cola Lima dos",
                title = "Estudo das ondas de instabilidade tropical no Oceano 
                         Atl{\^a}ntico e seus impactos na atmosfera",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2020",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2020-03-30",
             keywords = "ondas de instabilidade tropical, Oceano Atl{\^a}ntico, COAWST, 
                         tropical instability waves, Atlantic Ocean.",
             abstract = "Este trabalho investiga o comportamento das anomalias de 
                         Temperatura da Superf{\'{\i}}cie do Mar (TSM) formadas por Ondas 
                         de Instabilidade Tropical (OIT) no Oceano Atl{\^a}ntico e seus 
                         impactos na atmosfera. As OIT s{\~a}o estudadas atrav{\'e}s de 
                         dados satelitais de TSM e o magnitude do vento oriundos do 
                         Advanced Very High Resolution Radiometer (AVHRR) e SeaWinds para o 
                         per{\'{\i}}odo 19912017. Atrav{\'e}s de an{\'a}lises 
                         espectrais e estat{\'{\i}}sticas foi poss{\'{\i}}vel definir 
                         suas caracter{\'{\i}}sticas espaciais e temporais. Ademais, para 
                         determinar o impacto destas ondas na atmosfera sobrejacente foi 
                         utilizado o sistema de modelagem acoplado Coupled 
                         Ocean-Atmosphere-Wave-Sediment System (COAWST). Foram realizadas 
                         duas simula{\c{c}}{\~o}es num{\'e}ricas, sendo aplicado um 
                         filtro passa-baixa em uma delas, para que fosse isolado somente o 
                         efeito da mesoescala a partir da diferen{\c{c}}a entre as 
                         simula{\c{c}}{\~o}es. A an{\'a}lise dos dados de TSM revelou as 
                         seguintes caracter{\'{\i}}sticas: velocidade de fase de 
                         0,31-0,68 m/s, comprimentos de onda de 768.08-1609.91 km e 
                         per{\'{\i}}odos de 25-33 dias. Os dados de TSM filtrados na 
                         banda 20-40 dias mostraram que a regi{\~a}o ao redor de 1N-15W 
                         concentra grande parte de suas variabilidade de TSM associada 
                         {\`a}s OIT. A rela{\c{c}}{\~a}o entre a TSM e magnitude do 
                         vento foram analisadas atrav{\'e}s dos dados filtrados sugerindo 
                         uma forte interconex{\~a}o entre essas vari{\'a}veis tipicamente 
                         de Julho a Outubro. Os resultados da modelagem num{\'e}rica 
                         mostraram que os processos f{\'{\i}}sicos necess{\'a}rios para 
                         a forma{\c{c}}{\~a}o das OIT, assim como seu padr{\~a}o 
                         espacial, mostrando estruturas similares {\`a}s 
                         observa{\c{c}}{\~o}es nas mesmas {\'e}pocas do ano em que elas 
                         ocorrem. A diferen{\c{c}}a espacial e vertical entre as 
                         simula{\c{c}}{\~o}es isolaram o efeito da mesoescala e mostrou 
                         seu efeito nas vari{\'a}veis atmosf{\'e}ricas: temperatura do 
                         ar, press{\~a}o, altura da camada limite atmosf{\'e}rica, 
                         componentes zonal e meridional do vento, magnitude do vento e 
                         precipita{\c{c}}{\~a}o. As simula{\c{c}}{\~o}es foram 
                         validadas atrav{\'e}s dos dados sat{\'e}lites assim como dados 
                         in situ do Prediction And Research Moored Array In The Atlantic 
                         (PIRATA), atrav{\'e}s de m{\'e}tricas estat{\'{\i}}sticas que 
                         mostraram uma boa resposta para os dados de vento e TSM para a 
                         regi{\~a}o do oceano Atl{\^a}ntico. This work investigates the 
                         behavior of Sea Surface Temperature (SST) anomalies formed by 
                         Tropical Instability Waves (TIW) in the Atlantic Ocean and their 
                         impacts on the atmosphere. TIW are studied using satellite SST 
                         data and wind magnitude from the Advanced Very High Resolution 
                         Radiometer (AVHRR) and SeaWinds for the period 19912017. Through 
                         spectral and statistical analysis it was possible to define its 
                         spatial and temporal characteristics. In addition, the Coupled 
                         Ocean-Atmosphere-Wave-Sediment System (COAWST) a coupled modeling 
                         system was used to determine the impact of these waves on the 
                         atmosphere. Two numerical simulations were carried out and a 
                         low-pass filter was applied to one of them, so that only the 
                         mesoscale effect was isolated from the difference between the 
                         simulations. The analysis of the SST data revealed the following 
                         characteristics: phase speed of 0.31-0.68 m/s, wavelengths of 
                         768.08-1609.91 km and periods of 25-33 days. The SST data filtered 
                         in the 20-40 day band showed that the region around 1N-15W 
                         concentrates a large part of SST variability associated with TIW. 
                         The relationship between SST and wind magnitude was analyzed using 
                         the filtered data suggesting a strong interconnection between 
                         these variables, typically from July to October. The results of 
                         the numerical modeling showed that the physical processes 
                         necessary for the formation of the TIW, as well as their spatial 
                         pattern, showing structures similar to the observations at the 
                         same times of the year in which they occur. The spatial and 
                         vertical differences between the simulations isolated the 
                         mesoscale effect and showed its effect on atmospheric variables: 
                         The simulations were validated using satellite data as well as in 
                         situ data from the Prediction And Research Moored Array In The 
                         Atlantic (PIRATA), using statistical metrics that showed a good 
                         results to wind and SST data for the Atlantic Ocean region.",
            committee = "Lorenzzetti, Jo{\~a}o Antonio (presidente) and Pezzi, Luciano 
                         Ponzi (orientador) and Sales, Domingo Cassain",
         englishtitle = "Study of tropical instability waves in the Atlantic Ocean and 
                         their impacts on the atmosphere",
             language = "pt",
                pages = "86",
                  ibi = "8JMKD3MGP3W34R/428TANB",
                  url = "http://urlib.net/rep/8JMKD3MGP3W34R/428TANB",
           targetfile = "publicacao.pdf",
        urlaccessdate = "13 abr. 2021"
}


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