@Article{MuellaHFBSLBP:2008:NiThMe,
author = "Muella, M{\'a} and Honorato, rcio Tadeu de Assis and Fagundes, P.
R. and Bittencourt, Jos{\'e} and Augusto and Sahai, Y. and Lima,
W. L. C. and Becker-Guedes, F. and Pillat, V. G.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade do Vale do Para{\'{\i}}} and {ba (UNIVAP)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade do Vale do Para{\'{\i}}} and {ba (UNIVAP)} and
{Centro Universit{\'a}} and {rio Luterano de Palmas (CEULP)} and
{Universidade do Vale do Para{\'{\i}}}",
title = "Nighttime thermospheric meridional neutral winds inferred from
ionospheric hF and hpF2 data",
journal = "Advances in Space Research",
year = "2008",
volume = "41",
number = "4",
pages = "599--610",
keywords = "Thermospheric neutral winds, F region, Atmospheric models, Digital
ionosonde.",
abstract = "Nighttime thermospheric meridional winds aligned to the magnetic
meridian have been inferred using hF and hpF2 ionosonde data taken
from two equatorial stations, Manaus (2.9S, 60.0W, dip latitude
6.0N) and Palmas (10.17S, 48.2W, dip latitude 6.2S), and one
low-latitude station, Sao Jose dos Campos (23.21S, 45.86W, dip
latitude 17.26S), during geomagnetic quiet days of August and
September, 2002. Using an extension of the ionospheric servo model
and a simple formulation of the diffusive vertical drift velocity,
the magnetic meridional component of the thermospheric neutral
winds is inferred, respectively, at the peak (hpF2) and at the
base (hF) heights of the F region over Sao Jose dos Campos. An
approach has been included in the models to derive the effects of
the electrodynamic drift over Sao Jose dos Campos from the time
derivative of hpF2 and hF observed at the equatorial stations. The
magnetic meridional winds inferred from the two methods, for the
months of August and September, are compared with winds calculated
using the HWM-90 model and with measurements from FabryPerot
technique. The results show varying agreements and disagreements.
Meridional winds calculated from hpF2 ionospheric data (servo
model) may produce errors of about 59 m/s, whereas the method
calculated from the F-region base height (hF) ionospheric data
gives errors of about 69 m/s during the occurrence of equatorial
spread-F.",
doi = "10.1016/j.asr.2007.09.032",
url = "http://dx.doi.org/10.1016/j.asr.2007.09.032",
issn = "0273-1177",
language = "en",
targetfile = "nighttime.pdf",
urlaccessdate = "14 fev. 2025"
}