@Article{AraújoLimaJacoBati:2017:QuOsSi,
author = "Ara{\'u}jo, Luciana Rodrigues de and Lima, Lourivaldo Mota and
Jacobi, Christoph and Batista, Paulo Prado",
affiliation = "{Universidade Estadual da Para{\'{\i}}ba (UEPB)} and
{Universidade Estadual da Para{\'{\i}}ba (UEPB)} and {Leipzig
University} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "Quasi-biennial oscillation signatures in the diurnal tidal winds
over Cachoeira Paulista, Brazil",
journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
year = "2017",
volume = "155",
pages = "71--78",
month = "Mar.",
keywords = "Diurnal tides, MLT winds, QBO, Solar cycle.",
abstract = "Mesosphere/lower thermosphere winds obtained by meteor radar over
Cachoeira Paulista (22.7° S, 45.0° W), Brazil, have been used to
investigate the interannual variability of the diurnal tidal (DT)
wind amplitude. The monthly DT displays year to year variations
and their amplitudes are strongest during the westerly phase of
the quasi-biennial oscillation (QBO) at the 30 hPa level. This can
be observed in all seasons in the meridional component, whilst in
the zonal component the signal is clearer during austral autumn,
when the diurnal tide is strongest in this latitude. The spectrum
obtained from the deseasonalized amplitudes shows a peak near 26
months in the meridional component, which can be associated to the
stratospheric QBO. The QBO modulation of the DT amplitude shows a
quasi-decadal variation, and it is stronger during the maximum of
the solar cycle.",
doi = "10.1016/j.jastp.2017.02.001",
url = "http://dx.doi.org/10.1016/j.jastp.2017.02.001",
issn = "1364-6826",
language = "en",
targetfile = "araujo_quasi.pdf",
urlaccessdate = "2025, Feb. 09"
}