@Article{BravoMMBUESVNOVBVGRPCLCFMMSVC:2022:Ev14De,
author = "Bravo, M. A. and Molina, M. G. and Mart{\'{\i}}nez-Ledesma, M.
and Barb{\'a}s, B. de Haro and Urra, B. and El{\'{\i}}as, A.
and Souza, Jonas Rodrigues de and Villalobos, C. and Namour, J. H.
and Ovalle, E. and Venchiarutti, J. V. and Blunier, S. and
Vald{\'e}s-Abreu, J. C. and Guillermo, E. and Rojo, E. and
Pasquale, L. de and Carrasco, E. and Leiva, R. and Castillo
Rivera, C. and Foppiano, A. and Milla, M. and Muñoz, P. R. and
Stepanova, M. and Valdivia, J. A. and Cabrera, M.",
affiliation = "{Universidad Adventista de Chile} and {Universidad Nacional de
Tucum{\'a}n} and {Centro Interuniversitario de F{\'{\i}}sica de
la Alta Atm{\'o}sfera} and FACET-UNT and {Universidad Adventista
de Chile} and {Consejo Nacional de Investigaciones
Cient{\'{\i}}ficas y T{\'e}cnicas (CONICET)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidad
Adventista de Chile} and {Universidad Nacional de Tucum{\'a}n}
and {Universidad de Concepci{\'o}n} and FACET-UNT and
{Universidad de Chile} and {Universidad de Chile} and Universidad
Tecnol{\'o}gica Nacional, Bah{\'{\i}}a Blanca and {Universidad
Adventista de Chile} and Universidad Tecnol{\'o}gica Nacional,
Bah{\'{\i}}a Blanca and {Universidad Adventista de Chile} and
{Centro Interuniversitario de F{\'{\i}}sica de la Alta
Atm{\'o}sfera} and {Universidad de Concepci{\'o}n} and
{Universidad de Concepci{\'o}n} and {Pontificia Universidad
Cat{\'o}lica del Per{\'u}} and {Centro Interuniversitario de
F{\'{\i}}sica de la Alta Atm{\'o}sfera} and {Universidad de
Santiago de Chile} and {Universidad de Chile} and FACET-UNT",
title = "Ionospheric response modeling under eclipse conditions: Evaluation
of 14 December 2020, total solar eclipse prediction over the South
American sector",
journal = "Frontiers in Astronomy and Space Sciences",
year = "2022",
volume = "9",
pages = "e1021910",
month = "Dec.",
keywords = "eclipse condition, ionospheric modeling and prediction,
ionospheric response, south American sector, total solar
eclipse.",
abstract = "In this work, we evaluate the SUPIM-INPE model prediction of the
14 December 2020, total solar eclipse over the South American
continent. We compare the predictions with data from multiple
instruments for monitoring the ionosphere and with different
obscuration percentages (i.e., Jicamarca, 12.0°S, 76.8°W, 17%;
Tucum{\'a}n 26.9°S, 65.4° W, 49%; Chill{\'a}n 36.6°S, 72.0°W;
and Bah{\'{\i}}a Blanca, 38.7°S, 62.3°W, reach 95% obscuration)
due to the eclipse. The analysis is done under total eclipse
conditions and non-total eclipse conditions. Results obtained
suggest that the model was able to reproduce with high accuracy
both the daily variation and the eclipse impacts of E and F1
layers in the majority of the stations evaluated (except in
Jicamarca station). The comparison at the F2 layer indicates small
differences (<7.8%) between the predictions and observations at
all stations during the eclipse periods. Additionally, statistical
metrics reinforce the conclusion of a good performance of the
model. Predicted and calibrated Total Electron Content (TEC, using
3 different techniques) are also compared. Results show that,
although none of the selected TEC calibration methods have a good
agreement with the SUPIM-INPE prediction, they exhibit similar
trends in most of the cases. We also analyze data from the
Jicamarca Incoherent Scatter Radar (ISR), and Swarm-A and GOLD
missions. The electron temperature changes observed in ISR and
Swarm-A are underestimated by the prediction. Also, important
changes in the O/N2 ratio due to the eclipse, have been observed
with GOLD mission data. Thus, future versions of the SUPIM-INPE
model for eclipse conditions should consider effects on
thermospheric winds and changes in composition, specifically in
the O/N2 ratio.",
doi = "10.3389/fspas.2022.1021910",
url = "http://dx.doi.org/10.3389/fspas.2022.1021910",
issn = "2296-987X",
language = "en",
targetfile = "fspas-09-1021910.pdf",
urlaccessdate = "12 maio 2024"
}