@Article{LimaGuSaFaAbCrBi:2004:ReEqLo,
               author = "Lima, W. L. C and Guedes, F. Becker and Sahai, Y. and Fagundes, P. 
                         R. and Abalde, Jos{\'e} Ricardo and Crowley, G. and Bittencourt, 
                         Jose Augusto",
          affiliation = "Lima WLC (reprint author), Univ Luterna Brasil ULBRA, Ctr Univ 
                         Luterano Palmas CEULP, Palmas, TO BR-77054970 Brazil and Univ 
                         Luterna Brasil ULBRA, Ctr Univ Luterano Palmas CEULP, Palmas, TO 
                         BR-77054970 Brazil and UNIVAP, Sao Jose Dos Campos, BR-1244000 
                         Brazil and SW Res Inst, San Antonio, TX 78238 USA and INPE, Sao 
                         Jose Dos Campos, BR-12201970 Brazil",
                title = "Response of the equatorial and low-latitude ionosphere during the 
                         space weather events of April 2002",
              journal = "Annales Geophysicae",
                 year = "2004",
               volume = "22",
               number = "9",
                pages = "3211--3219",
             keywords = "ionosphere, ionospheric disturbances, modeling and forecasting, 
                         magnetospheric physics,storms and substorms PLANETARY 
                         MAGNETIC-FIELD, ZONAL ELECTRIC-FIELDS, F-REGION, DISTURBED 
                         CONDITIONS, GRAVITY-WAVES, WAGS CAMPAIGN, STORM, THERMOSPHERE, 
                         MIDDLE, MODEL.",
             abstract = "A digital ionosonde, of the type known as Canadian Advanced 
                         Digital Ionosonde (CADI), has been in routine operation at Sao 
                         Jose dos Campos (23.2degrees S, 45.9degrees W; dip latitude 
                         17.6degrees S), Brazil, since August 2000. A new CADI was 
                         installed at Palmas (10.2degrees S, 48.2degrees W; dip latitude 
                         5.5degrees S), Brazil, in April 2002. The two CADIs are part of a 
                         new network being established in a collaborative program between 
                         UNIVAP and CEULP/ULBRA, to study the equatorial and low-latitude 
                         ionospheric regions in Brazil. In this paper we present and 
                         discuss the effects of the space weather events during 17-20 April 
                         2002, as evidenced by the ionospheric parameter changes from 
                         simultaneous observations at Sao Jose dos Campos and Palmas. A 
                         comparison of the observed ionospheric parameters (h'F, hpF2 and 
                         foF2) at the two stations, separated only by about 1460 km, shows 
                         both similarities and differences associated with the geomagnetic 
                         disturbances. Also, a comparison of the observed F-region 
                         parameters with the ASPEN-TIMEGCM model results is presented. The 
                         model results show reasonable agreement during the quiet period of 
                         observations, but some discrepancies have been observed during the 
                         geomagnetic disturbances.",
           copyholder = "SID/SCD",
                 issn = "0992-7689",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "en",
           targetfile = "response equatorial low.pdf",
        urlaccessdate = "16 jun. 2024"
}