@Article{GuharayBatiAndr:2019:InSoCy,
author = "Guharay, A. and Batista, Paulo Prado and Andrioli, V{\^a}nia
F{\'a}tima",
affiliation = "{Physical Research Laboratory} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Investigation of solar cycle dependence of the tides in the low
latitude MLT using meteor radar observations",
journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
year = "2019",
volume = "193",
pages = "e105083",
month = "Oct.",
keywords = "Tides, Meteor radar observations, Middle atmosphere dynamics.",
abstract = "Solar cycle dependence of the dominant tides, i.e. diurnal and
semidiurnal components in the mesosphere and lower thermosphere
(MLT) is investigated from a Southern hemispheric low-latitude
station, Cachoeira Paulista (22.7oS, 45oW) using long-term meteor
wind observations (19992018). Although the long-term variations of
the tides in aggregate do not show any significant relationship
with the solar activity, the individual seasonal profiles reveal
appreciable correlation in equinoxes with maximum in fall and no
evident correlation in summer. The diurnal tide seasonal profiles
show negative correlation with the solar activity and the
semidiurnal tide exhibits both negative and positive correlations
that vary with altitude within the MLT. The zonal diurnal tide
shows positive correlation with the solar flux in the upper MLT in
solar minima. However, the meridional semidiurnal tide reveals
negative correlation in solar minima condition. No evident
relationship between the tides and solar flux is found in solar
maxima condition. Since the present study points out resemblance
as well as dissimilarity with a handful of previous
investigations, further long-term and coordinated studies are
being sought to obtain critical understanding of the persistent
enigmatic features.",
doi = "10.1016/j.jastp.2019.105083",
url = "http://dx.doi.org/10.1016/j.jastp.2019.105083",
issn = "1364-6826",
language = "en",
targetfile = "guharay_investigation.pdf",
urlaccessdate = "28 abr. 2024"
}