@Article{GouveiaSapuMoniAlve:2014:RoEvNe,
               author = "Gouveia, Tayn{\'a} Aparecida Ferreira and Sapucci, Luiz Fernando 
                         and Monico, Jo{\~a}o Francisco Galera and Alves, Daniele Barroca 
                         Marra",
          affiliation = "Universidade Estadual Paulista  UNESP Presidente Prudente, SP, 
                         Brazil and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         Universidade Estadual Paulista  UNESPPresidente Prudente, SP, 
                         Brazil and Universidade Estadual Paulista  UNESPPresidente 
                         Prudente, SP, Brazil",
                title = "Robust evaluation of neutrospheric modeling over brasilian 
                         territory based on numerical weather prediction models of South 
                         American",
              journal = "Boletim de Ci{\^e}ncias Geod{\'e}sicas",
                 year = "2014",
               volume = "20",
               number = "3",
                pages = "481--503",
                month = "jul.-set.",
             keywords = "data assimilation, GNSS, GPS, ionosphere, spatial resolution, 
                         weather forecasting, Brazil.",
             abstract = "GNSS (GNSS - Global Navigation Satellite System) positioning is 
                         the most by used technique to obtain a location over terrestrial 
                         surface or close to it. After the effects generated by the 
                         ionosphere, the refraction that the signal suffers, when it goes 
                         through the neutrosphere, can be considered as one of the largest 
                         error sources in the signal, in which is generated a neutrospheric 
                         delay, also called Zenithal Tropospheric Delay (ZTD). When the ZTD 
                         is not modeled, significant errors in the GNSS positioning are 
                         observed. Numerical Weather Prediction models are good 
                         alternatives to obtain ZTD over South America, because they are 
                         fed daily by atmospheric observations and consequently they are 
                         able to capture the temporal and spatial oscillations of the ZTD 
                         values. In Brazil, a system is operating at CPTEC/INPE for the 
                         purpose of generating such forecasts with spatial resolution of 15 
                         km and temporal of 3 hours. In order to assess the impact of the 
                         recent improvements in the quality of ZTD predictions, a robust 
                         evaluation of the ZTD predictions was performed, taking into 
                         consideration several analyses in the Brazilian territory, in 
                         which ZTD values obtained from GPS data collected by the RBMC 
                         stations were used as reference, considering the evaluation: 
                         seasonal, the continentality, altitude and latitude variation.",
                  doi = "10.1590/S1982-21702014000200028",
                  url = "http://dx.doi.org/10.1590/S1982-21702014000200028",
                 issn = "1413-4853",
                label = "scopus 2014-11 GouveiaSapMonAlvSap:2014:RoEvNe",
             language = "pt",
           targetfile = "Gouveia_Avaliacao.pdf",
                  url = "http://dx.doi.org/10.1590/S1982-21702014000200028",
        urlaccessdate = "03 maio 2024"
}