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@Article{ResendeSDBNAAMSCBWL:2020:InDiDy,
               author = "Resende, Laysa Cristina Ara{\'u}jo and Shi, Jiankui K. and 
                         Denardini, Clezio Marcos and Batista, Inez Staciarini and 
                         Nogueira, Paulo A. B. and Arras, C. and Andrioli, V{\^a}nia 
                         F{\'a}tima and Moro, Juliano and Silva, Ligia Alves da and 
                         Carrasco, A. J. and Barbosa Neto, Paulo Fran{\c{c}}a and Wang, 
                         Chi and Liu, Z.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and State Key 
                         Laboratory of Space Weather, NSSC/CAS and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and Instituto Federal de Educa{\c{c}}{\~a}o, 
                         Ci{\^e}ncia e Tecnologia de S{\~a}o Paulo (IFSP) and {Helmholtz 
                         Centre Potsdam} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidad de Los Andes} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and State Key Laboratory of Space Weather, 
                         NSSC/CAS and State Key Laboratory of Space Weather, NSSC/CAS",
                title = "The influence of disturbance dynamo electric field in the 
                         formation of strong sporadic E layers over Boa Vista, a 
                         low\‐latitude station in the American sector",
              journal = "Journal of Geophysical Research: Space Physics",
                 year = "2020",
               volume = "102",
               number = "9",
             abstract = "This study analyzes strong sporadic E layer (Es) formation in Boa 
                         Vista (BV, 2.8N, 60.7W, dip: 18), a low\‐latitude region 
                         in the Brazilian sector, which occurred far after the onset of a 
                         magnetic storm recovery phase. Such occurrences were observed 
                         during seven magnetic storms with available data for BV. Thus, the 
                         ionospheric behavior on days around the magnetic storm that 
                         occurred on 20 January 2016 was investigated to search for 
                         possible explanations. This analysis indicated that the probable 
                         mechanism acting during the Es layer strengthening is the zonal 
                         westward electric field caused by a disturbance dynamo. The same 
                         evidence was also observed in two other magnetic storms at the 
                         same location. Hence, a numerical model of the E region dynamics, 
                         called MIRE (Portuguese acronym for E Region Ionospheric Model), 
                         was used to confirm whether the disturbance dynamo could cause the 
                         Es layer intensification. The inputs for the model were the 
                         electric field deduced from the vertical drift and the wind 
                         components provided by GSWM\‐00 model. The simulations 
                         indicate that the Es layer density is significantly enhanced when 
                         the zonal electric field is present compared to the reference 
                         scenario with only the winds. Therefore, it is concluded that the 
                         disturbance dynamo electric field is the likely cause of the 
                         strong Es layers in the analyzed cases. Finally, the combined 
                         results from the model and observational data seem to contribute 
                         significantly to advance our understanding of the role of the 
                         electric fields in the Es layer formation at low latitudes.",
                  doi = "10.1029/2019JA027519",
                  url = "http://dx.doi.org/10.1029/2019JA027519",
                 issn = "2169-9402",
             language = "en",
           targetfile = "Resende_influence.pdf",
        urlaccessdate = "15 jan. 2021"
}


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