@InProceedings{SantosBatiAbdu:2018:TEFOOb,
author = "Santos, Jonas Rodrigues de and Batista, Inez Staciarini and Abdu,
Mangalathayil Ali",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "TEC and FOF2 obtained from GNSS signals and assimilated by a
physical model",
year = "2018",
organization = "Simp{\'o}sio Brasileiro de Geof{\'{\i}}sica Espacial e
Aeronomia, 7. (SBGEA)",
abstract = "In this work, we use the vertical total electron content (TEC)
calibrated with the Boston College code and the ionospheric
critical frequency extracted from such TEC (foF2* ). The data are
only for the day March 24, 2015. Three latitudinal ranges covering
-30º to 30º degrees, which are distributed along the magnetic
meridian crossing Jicamarca (Geog. Longitude: -77º), Boa
Vista-Campo Grande (Geog. Longitude: -57º) and S{\~a}o
Lu{\'{\i}}s (Geog. Longitude: -44º), respectively. First of all,
our assimilation data consist of a latitudinal adjustment of the
electron density calculated by the Sheffield University
Plasmasphere Ionosphere Model at INPE (SUPIM-INPE) applying the
same proportion as obtained from the ratio between the observed
TEC and calculated by SUPIM-INPE. After that, if it is identified
discrepancies between calculated and foF2* values, a second
adjustment is applied considering also the proportional difference
between calculated and extracted critical frequency (foF2* ).
Observational data of F-region critical frequency (foF2) and TEC
from digisondes operating at Boa Vista, S{\~a}o Lu{\'{\i}}s and
Campo Grande were also used in the result validations. In general,
TEC values obtained with Boston College code show good agreement
with those from digisondes for all locations, except over S{\~a}o
Lu{\'{\i}}s near 00 and 12 UT and over Campo Grande after 14 UT.
The direct results from SUPIM-INPE, i.e., the results without data
assimilation, for both foF2 and TEC have not shown good agreement
with the observational data. On the other hand, it was found
excellent results (the results match with observations), mainly
for foF2, after applying the data assimilation.",
conference-location = "Santa Maria, RS",
conference-year = "05-09 nov",
language = "pt",
targetfile = "souza_tec.pdf",
urlaccessdate = "27 abr. 2024"
}