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@Article{CominAcevSouz:2016:SiNuAl,
               author = "Comin, Alcimoni Nelci and Acevedo, Ot{\'a}vio Costa and Souza, 
                         Ronald Buss de",
          affiliation = "{Universidade Federal de Santa Maria (UFSM)} and {Universidade 
                         Federal de Santa Maria (UFSM)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Simula{\c{c}}{\~a}o num{\'e}rica em alta resolu{\c{c}}{\~a}o 
                         nas Ilhas Shetland do Sul, Ant{\'a}rtica, usando WRF",
              journal = "Anu{\'a}rio do Instituto de Geoci{\^e}ncias",
                 year = "2016",
               volume = "39",
               number = "3",
                pages = "105--110",
             keywords = "WRF, alta resolu{\c{c}}{\~a}o, ilhas Shetland do Sul, Navio 
                         Polar, WRF, High-resolution, South Shetland Islands, Polar Ship.",
             abstract = "Este artigo apresenta simula{\c{c}}{\~o}es de alta 
                         resolu{\c{c}}{\~a}o com o modelo Weather Research and 
                         Forecasting (WRF) para a Ilhas Shetland do Sul, na Ant{\'a}rtica. 
                         Os dados observados s{\~a}o coletadas pelos sensores instalados 
                         no navio Polar durante o transecto nesta regi{\~a}o. Este estudo 
                         incluiu quatro simula{\c{c}}{\~o}es diferentes; variando o 
                         n{\'u}mero de pontos de grade no dom{\'{\i}}nio interno entre 
                         127 x 127 e 187 x 187 e duas configura{\c{c}}{\~o}es de 
                         microf{\'{\i}}sica. As simula{\c{c}}{\~o}es para a temperatura 
                         do ar e ponto de orvalho s{\~a}o altamente dependente do 
                         n{\'u}mero de pontos de grade do dom{\'{\i}}nio interno. Quando 
                         o dom{\'{\i}}nio com 127 pontos {\'e} usado o modelo reproduz 
                         flutua{\c{c}}{\~o}es abruptas dessas vari{\'a}veis e altas 
                         subestimativas em ambas as configura{\c{c}}{\~o}es. Isto pode 
                         ser atribu{\'{\i}}do {\`a} sensibilidade associada {\`a} 
                         transfer{\^e}ncia de informa{\c{c}}{\~o}es entre as diferentes 
                         grades aninhadas. Com a expans{\~a}o da grade interna em 187 
                         pontos as flutua{\c{c}}{\~o}es deixam de ocorrer. A 
                         subestimativa das temperaturas no modelo WRF tamb{\'e}m {\'e} 
                         associada com a defici{\^e}ncia na representa{\c{c}}{\~a}o de 
                         nebulosidade estratiforme. Nos dias com nebulosidade m{\'e}dia o 
                         modelo simula melhor essas vari{\'a}veis. J{\'a} a press{\~a}o 
                         {\'e} adequadamente simulada com os dois dom{\'{\i}}nios e 
                         {\'e} mais dependente de padr{\~o}es clim{\'a}ticos de grande 
                         escala derivadas do modelo global. As pequenas diferen{\c{c}}as 
                         na press{\~a}o s{\~a}o devido ao ajuste din{\^a}mico do modelo. 
                         O esquema microf{\'{\i}}sico WSM5 apresenta resultados melhores 
                         que o WSM3 para todas as vari{\'a}veis testadas aqui. ABSTRACT: 
                         This paper presents run high-resolution Weather Research and 
                         Forecasting (WRF) model in the region of South Shetland Islands, 
                         in Antarctica. Simulation model are compared to observations taken 
                         aboard a Polar Ship during the transect in this region. A total of 
                         4 different simulations were performed, varying the number of 
                         points of the innermost domain 127 x 127 and 187 x 187 and two 
                         microphysics schemes. The results of air temperature and dew point 
                         are highly dependent on the size of the internal domain. When the 
                         small domain with points 127 are used, the model produces abrupt 
                         fluctuations of these variables and highly underestimates them in 
                         both settings. This can be attributed the sensitivity of the model 
                         to the transfer of information between the different nested grids. 
                         With larger innermost grid with points 187, such fluctuations no 
                         longer occur. The underestimation temperatures in the WRF model is 
                         associated with the deficiency representation on days with 
                         stratiform cloudiness. Days with middle-level clouds model the 
                         temperature tend to be better represented. The air pressure is 
                         adequately simulated with both domains, as it is more dependent on 
                         large-scale weather patterns, derived from the global model, which 
                         provides the boundary conditions. The small differences in air 
                         pressure among the simulations are a consequence of the dynamical 
                         adjustment of the model. The microphysics scheme WSM5 results were 
                         better than scheme WSM3 for all variables tested here.",
                 issn = "0101-9759",
             language = "en",
           targetfile = "comin_simulacao.pdf",
        urlaccessdate = "25 nov. 2020"
}


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