@Article{ElyBatiAbdu:2012:CoDiDa,
               author = "Ely, Cl{\'a}udia Vogel and Batista, Inez Staciarini and Abdu, 
                         Mangalathayil Ali",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Radio occultation electron density profiles from the 
                         FORMOSAT-3/COSMIC satellites over the Brazilian region: a 
                         comparison with Digisonde data",
              journal = "Advances in Space Research",
                 year = "2012",
               volume = "49",
               number = "11",
                pages = "1553--1562",
                month = "June",
                 note = "{Setores de Atividade: Pesquisa e desenvolvimento 
                         cient{\'{\i}}fico.}",
             keywords = "Brazil, Digisonde, FORMOSAT-3/COSMIC, GPS RO.",
             abstract = "This study aims to validate the electron density pro\files 
                         from the FORMOSAT-3/COSMIC satellites with data from Digisondes in 
                         Brazil during the low solar activity period of the years 2006, 
                         2007 and 2008. Data from three Brazilian Digisondes located in 
                         Cachoeira Paulista (22.7S, 45W), Sa o Lu{\'y} ´ s (2.5S, 44.2W) 
                         and Fortaleza (3.8S, 38W) were used in the comparisons. Only the 
                         pro\files whose density peak have been obtained near the 
                         stations coordinates were chosen for the comparison. Although 
                         there is generally good agreement, some cases of discrepancies are 
                         observed. Some of these discrepancies cannot be explained simply 
                         by the di\fferences in the position and local time of the 
                         measurements made by the satellite and the ground-based station. 
                         In such cases it is possible that local conditions, such as the 
                         presence of a trans-equatorial wind or electron density gradients, 
                         could contribute to the observed di\fferences. Comparison 
                         of the F2 layer peak parameters, the NmF2 and hmF2, obtained from 
                         the two techniques showed that, in general, the agreement for NmF2 
                         is pretty good and the NmF2 has a better correlation than hmF2. 
                         Cachoeira Paulista had the worst correlation for hmF2 possibly 
                         because this station is situated in the region under the 
                         in\fluence of the equatorial ionization anomaly, a region 
                         where it is more di\fficult to apply the RO technique 
                         without violating the spherical symmetry condition.",
                  doi = "10.1016/j.asr.2011.12.029",
                  url = "http://dx.doi.org/10.1016/j.asr.2011.12.029",
                 issn = "0273-1177",
                label = "lattes: 4091433441104332 2 ElyBatiAbdu:2012:CoDiDa",
             language = "en",
           targetfile = "Ely-AdvSpaRes-1-s2.0-S0273117711008696-main[1].pdf",
        urlaccessdate = "15 jun. 2024"
}