@InProceedings{Romero-HernandezDGTNBJREPRLSA:2021:StTEVa,
author = "Romero-Hernandez, E. and Denardini, Clezio Marcos and
Gonzalez-Esparza, J. A. and Takahashi, Hisao and Nogueira, P. A.
B. and Barbosa Neto, Paulo Fran{\c{c}}a and Jonah, O. F. and
Resende, L. C. A. and Essien, Patrick and Pican{\c{c}}o, Giorgio
Arlan da Silva and Rodriguez-Martinez, M. and Luz, V. and
Sergeeva, M. and Aguilar-Rodriguez, E. and Perez-Tijreina",
affiliation = "{Universidad Aut{\'o}noma de Nuevo Le{\'o}n} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidad Nacional
Aut{\'o}noma de M{\'e}xico} 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 and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Massachusetts
Institute of Technology} and {National Space Science Center} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidad Nacional
Aut{\'o}noma de M{\'e}xico} and {Universidad Nacional
Aut{\'o}noma de M{\'e}xico} and {Universidad Nacional
Aut{\'o}noma de M{\'e}xico} and {Universidad Nacional
Aut{\'o}noma de M{\'e}xico} and {Universidad Aut{\'o}noma de
Nuevo Le{\'o}n}",
title = "Study of TEC variations over the Latin American region during
moderate and high solar activity",
year = "2021",
organization = "Simp{\'o}sio Brasileiro de Geof{\'{\i}}sica Espacial e
Aeronomia, 8. (SBGEA)",
abstract = "The ionospheric plasma is a scattering medium that can affect the
trajectory of ground-based Global Navigation Satellite System
(GNSS) signals, introducing positioning errors. When the solar
activity is lower, the ionosphere is almost transparent to the
radio waves. However, when it is disturbed, satellite signals are
refracted (higher electronic density). Thus, the ionosphere is a
region highly relevant for Space Weather studies, from which it is
possible to know the solar activity state. The present work is a
comprehensive study of the ionospheric Total Electron Content
(TEC) variations based on data obtained from (GNSS) receivers
(networks) available in Latin America. Annual TEC trends at
daytime and nighttime are studied for different solar activity
conditions: 2011 (ascending phase) and 2014 (maximum phase). The
present analysis was focused on: (1) response to the solar flux
variation; (2) seasonal variations in different latitudes and
longitudes; and (3) interhemispheric asymmetry. The
daytime-nighttime comparison was performed to analyze the
ionosphere dynamics in this period. The results showed that: in
the daytime there were equinoctial asymmetries with an opposite
configuration in high and moderate solar activity, and some
hemispherical asymmetries were observed which seems to be
attributed to the meridional winds; while in the nighttime a
strong latitudinal dependence of nighttime vTEC variation was
observed, and the Midlatitude Summer Nighttime Anomaly (MSNA) in
the Southern hemisphere was identified during January, February,
and December of 2011. Also, the neutral wind approximations
suggest that MSNA was associated with the presence of equatorward
winds.",
conference-location = "Online",
conference-year = "22-26 mar.",
language = "en",
urlaccessdate = "05 jun. 2024"
}