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@MastersThesis{Costa:2018:CaObEs,
               author = "Costa, Paulo Cesar Silva da",
                title = "Precipita{\c{c}}{\~a}o no trimestre seco no Centro de 
                         Lan{\c{c}}amento de Alc{\^a}ntara: caracteriza{\c{c}}{\~a}o 
                         observacional e estudo de caso",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2018",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2018-08-21",
             keywords = "centro de lan{\c{c}}amento de Alc{\^a}ntara, trimestre seco, 
                         estudo de caso, sistema convectivo de mesoescala, modelo WRF, ALC, 
                         dry quarter, case study, mesoscale convective complex - MCC, model 
                         WRF.",
             abstract = "As atividades aeroespaciais necessitam de uma meteorologia 
                         favor{\'a}vel para a montagem e o lan{\c{c}}amento de foguetes. 
                         Na esta{\c{c}}{\~a}o seca do CLA, h{\'a} eventos de chuva que 
                         podem inviabilizar a opera{\c{c}}{\~a}o e danificar 
                         equipamentos. O presente trabalho busca caracterizar o padr{\~a}o 
                         do acumulado trimestral dos dias {\'u}midos (PWET) e do 
                         n{\'u}mero de dias {\'u}midos (NWET) no CLA com base nos totais 
                         di{\'a}rios de precipita{\c{c}}{\~a}o do CPC de 1979 a 2016 (37 
                         anos). No aspecto observacional, verifica-se que o acumulado de 
                         chuva no trimestre seco {\'e} inferior a 50 mm e, 
                         predominantemente, as chuvas ocorrem em dias isolados. Os dias 
                         {\'u}midos n{\~a}o ultrapassam, em m{\'e}dia, tr{\^e}s dias a 
                         cada m{\^e}s. Os maiores volumes ocorrem pela manh{\~a} e os 
                         menores no final da noite. Nos anos em que os acumulados de chuva 
                         ficam acima da m{\'e}dia, ocorrem maior quantidade de dias com 
                         chuva. As ocorr{\^e}ncia de PWET e NWET aumentam quando 
                         associados {\`a} Gradiente negativo do Atl{\^a}ntico Sul (GRAD) 
                         e {\`a} intensidade do vento abaixo da m{\'e}dia em 925 hPa. As 
                         precipita{\c{c}}{\~o}es excedentes maior ou igual a 1 mm 
                         ajusta-se {\`a} distribui{\c{c}}{\~a}o Log-normal e estabelece 
                         que {\'e} prov{\'a}vel que 1 evento de precipita{\c{c}}{\~a}o 
                         intensa ocorra a cada dois anos e que a precipita{\c{c}}{\~a}o 
                         igual ou superior a 20 mm ocorra a cada cinco anos. Neste eventos, 
                         a atmosfera apresenta uma circula{\c{c}}{\~a}o de grande escala 
                         favor{\'a}vel, com converg{\^e}ncia de massa e de umidade em 
                         baixos n{\'{\i}}veis, com correntes ascendentes e 
                         concentra{\c{c}}{\~a}o de umidade em m{\'e}dios n{\'{\i}}veis 
                         e com diverg{\^e}ncia de massa nos n{\'{\i}}veis superiores. O 
                         evento, que ocorreu no dia 20/10/2011, apresentou padr{\~a}o de 
                         grande escala com presen{\c{c}}a de v{\'a}rios transientes que 
                         contrbu{\'{\i}}ram para o desenvolvimento do Sistema Convectivo 
                         de Mesoescala. Ao final deste trabalho, a simula{\c{c}}{\~a}o do 
                         caso foi realizada com o modelo WRF, mas suas sa{\'{\i}}das 
                         subestimaram o desenvolvimento e deslocamento do SCM e a 
                         intensidade da precipita{\c{c}}{\~a}o na regi{\~a}o do CLA. 
                         ABSTRACT: Aerospace activities require a favorable meteorology for 
                         assembling and launching rockets. In the CLA dry season, there are 
                         rain events that can make operation unviable and damage equipment. 
                         The present work aims to characterize the pattern of the quarterly 
                         accumulation of wet days (PWET) and the number of wet days (NWET) 
                         in the CLA based on daily CPC precipitation totals from 1979 to 
                         2016 (37 years). In the observational aspect, it is verified that 
                         the accumulated rainfall in the dry quarter is less than 50 mm 
                         and, predominantly, rainfall occurs on isolated days. Wet days do 
                         not exceed, on average, three days each month. The largest volumes 
                         occur in the morning and the smallest in the evening. In the years 
                         in which the accumulations of rain are above average, they occur 
                         more amount of days with rain. The occurrence of PWET and NWET 
                         increases when associated with the Southern Atlantic Negative 
                         Gradient (GRAD) and below average wind intensity at 925 hPa. 
                         Excess precipitation greater than or equal to 1 mm fits the 
                         Log-normal distribution and establishes that it is likely that 1 
                         event of intense precipitation occurs every two years and that 
                         precipitation equal to or greater than 20 mm occurs every five 
                         years. In this event, the atmosphere has a favorable largescale 
                         circulation, with mass and humidity convergence at low levels, 
                         with upward currents and humidity concentration at medium levels 
                         and with mass divergence at higher levels. The event, which 
                         occurred on October 20, 2011, presented a large scale pattern with 
                         the presence of several transients that contributed to the 
                         development of the Mesoscale Convective System. At the end of this 
                         work, the simulation of the case was performed with the WRF model, 
                         but its outputs underestimated the development and displacement of 
                         the SCM and the intensity of precipitation in the CLA region.",
            committee = "Sansigolo, Cl{\'o}vis Angeli (Presidente) and Oyama, Marcos 
                         Daisuke (Orientador) and Eichholz, Cristiano Wickboldt and Brito, 
                         Sheila Santana de Barros",
         englishtitle = "Precipitation in the dry quarter in the Alc{\^a}nara Launch 
                         Center: observational characterization and case study",
             language = "pt",
                pages = "80",
                  ibi = "8JMKD3MGP3W34R/3RMG4PS",
                  url = "http://urlib.net/rep/8JMKD3MGP3W34R/3RMG4PS",
           targetfile = "publicacao.pdf",
        urlaccessdate = "29 nov. 2020"
}


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