@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, 2.8°N, 60.7°W, 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 = "08 maio 2024"
}