@Article{GuharayBatiClem:2015:VaQuWa,
author = "Guharay, A. and Batista, Paulo Prado and Clemesha, Barclay
Robert",
affiliation = "{Physical Research Laboratory} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Variability of the quasi-2-day wave and interaction with longer
period planetary waves in the MLT at Cachoeira Paulista (22.7°S,
45°W)",
journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
year = "2015",
volume = "130/131",
pages = "50--67",
month = "Aug.",
keywords = "Quasi-2-day wave, Mesosphere and lower thermosphere, Nonlinear
wave–wave interactions.",
abstract = "An exclusive study has been carried out with long term meteor wind
data (20002014) to characterize the quasi-2-day wave (QTDW) in the
mesosphere and lower thermosphere (MLT) and its interactions with
the longer period planetary waves at Cachoeira Paulista (22.7°S,
45°W). The QTDW is observed to be dominant during late summer
(JanuaryFebruary) all the years under consideration except 2013.
All the wave parameters exhibit significant interannual
variability. The maximum wave amplitude comes out to be 39 m/s,
which is significantly higher than the reported northern
hemispheric findings. The mean MLT period exhibits a wide range of
variability (3670 h) indicating the presence of multiple Rossby
normal modes with varying zonal wave numbers. Modulations of the
QTDW amplitude by the planetary waves with longer periodicities
(>9 days) are evident, especially during summer. The nonlinear
interactions between the 2-day wave and longer period waves are
believed to give rise to a host of secondary waves with
frequencies lying close to 2-day. The strong QTDW activity, as
observed at this location, has potential to cause significant
effect on the overlying ionosphere and hence the
atmosphere-ionosphere dynamical coupling.",
doi = "10.1016/j.jastp.2015.05.010",
url = "http://dx.doi.org/10.1016/j.jastp.2015.05.010",
issn = "1364-6826",
language = "en",
urlaccessdate = "27 abr. 2024"
}