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@Article{HolzschuhSapuMoni:2010:AvPeAt,
               author = "Holzschuh, Marcelo Leandro and Sapucci, Luiz Fernando and Monico, 
                         Jo{\~a}o Francisco Galera",
          affiliation = "Universidade Estadual do Mato Grosso, Departamento de Licenciatura 
                         em Computa{\c{c}}{\~a}o, Col{\'{\i}}der – MT and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE/CPTEC)} and 3Universidade 
                         Estadual Paulista-UNESP, Departamento de Cartografia da FCT, 
                         Presidente Prudente –",
                title = "Avalia{\c{c}}{\~a}o de perfis atmosf{\'e}ricos de 
                         r{\'a}dio-oculta{\c{c}}{\~a}o GPS do Sat{\'e}lite Champ sobre 
                         a Am{\'e}rica do Sul",
              journal = "Revista Brasileira de Meteorologia",
                 year = "2010",
               volume = "25",
               number = "2",
                pages = "147 - 155",
             keywords = "RO GPS, GPS meteorologia, Rean{\'a}lise CPTEC, RACCI, 
                         meteorology, CPTEC Reanalysis, RACCI.",
             abstract = "Com o advento dos sat{\'e}lites artificiais Global Positioning 
                         System (GPS) em conjunto com os sat{\'e}lites Low Earth Orbiting 
                         (LEO), surge a R{\'a}dio Oculta{\c{c}}{\~a}o GPS (RO GPS), 
                         t{\'e}cnica que permite obter remotamente perfis 
                         atmosf{\'e}ricos com boas perspectivas para 
                         aplica{\c{c}}{\~o}es em modelagem num{\'e}rica de tempo. O 
                         sat{\'e}lite LEO denominado Challenging Minisatellite Payload of 
                         Geophysical Research and Application (CHAMP), embora tenha sido 
                         lan{\c{c}}ado com o objetivo principal voltado para estudos 
                         geof{\'{\i}}sicos, tem permitido tamb{\'e}m acessar o potencial 
                         da RO GPS. Nesse trabalho objetiva-se avaliar a qualidade dos 
                         perfis atmosf{\'e}ricos obtidos com o sat{\'e}lite CHAMP sobre a 
                         Am{\'e}rica do Sul, comparando-os com os perfis provenientes de 
                         radiossondagens e da rean{\'a}lise regional de 5 anos do 
                         CPTEC/INPE. Os resultados da compara{\c{c}}{\~a}o entre os 
                         perfis obtidos por RO GPS e por radiossondas, apontam uma 
                         diferen{\c{c}}a m{\'e}dia na temperatura abaixo de 1K e um 
                         desvio padr{\~a}o de at{\'e} 3K, distribu{\'{\i}}dos na camada 
                         entre 9 e 18 km. Os resultados da compara{\c{c}}{\~a}o entre os 
                         perfis de temperatura advindos de RO GPS e da rean{\'a}lise do 
                         CPTEC entre 9 e 13 km, mostram que o vi{\'e}s {\'e} praticamente 
                         nulo e o desvio padr{\~a}o pr{\'o}ximo a 1K. ABSTR ACT: With the 
                         advent of Global Positioning System(GPS ), together with Low Earth 
                         Orbit (LEO ) satellites, the Radio Occultation GPS (RO GPS) 
                         technique appears as a possibility of obtaining atmospheric 
                         profiles remotely, with positive perspectives of applications in 
                         atmospheric numerical modeling. The LEO satellite mission 
                         denominated Challenging Minisatellite Payload of Geophysical 
                         Research and Application (CHAMP), although with the main objective 
                         being in the area of geophysical studies, it has also allowed 
                         studies about the potential of RO-GPS. This study is related to 
                         the evaluation of the atmospheric profiles quality obtained by the 
                         LEO CHAMP satellites over South America, comparing them to 
                         radiosondes profiles and of regional reanalysis of five years from 
                         CPTEC/INPE. The results of the comparisons between RO GPS and RSO 
                         profiles pointed out a mean temperature difference below 1 K and a 
                         standard deviation of up to 3 K, distributed in altitudes from 9 
                         to 18 km. The comparisons of temperature profiles from RO GPS and 
                         CPTECs reanalysis between 9 and 13 km showed that the bias is 
                         almost null and the standard deviation is around 1 K.",
                 issn = "0102-7786",
             language = "pt",
           targetfile = "Holzschuh.pdf",
        urlaccessdate = "29 mar. 2024"
}


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