@Article{GuharayBati:2019:VaTiDu,
author = "Guharay, A. and Batista, Paulo Prado",
affiliation = "{Physical Research Laboratory} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "On the variability of tides during a major stratospheric sudden
warming in September 2002 at Southern hemispheric extra-tropical
latitude",
journal = "Advances in Space Research",
year = "2019",
volume = "63",
number = "8",
pages = "2337--2344",
month = "Apr.",
keywords = "Stratospheric sudden warming, Tides, Middle atmosphere dynamics.",
abstract = "Investigation of the middle atmospheric tidal response to the
September 2002 sudden stratospheric warming (SSW) is carried out
from a Southern hemispheric extra-tropical location Cachoeira
Paulista (22.7S, 45W) using meteor radar observations and
reanalysis database. Significant diurnal and semidiurnal tidal
amplitudes are found in the mesosphere and lower thermosphere
(MLT) a few days prior to the warming onset consistent with the
high latitude observations. In the troposphere and stratosphere
(TS) the tidal amplitudes attain higher value during the main
phase of the warming which decrease subsequently. The simultaneous
enhancement of the tidal amplitudes in the TS and diminution in
the MLT may imply strong dissipation of the upward propagating
tides during the SSW at present location. An evident signature of
the tide-planetary wave coupling due to nonlinear interactions is
found. A preferential modulation of the tidal amplitudes by
long/short period planetary waves are observed in the MLT/TS. The
migrating diurnal tide (DW1) and nonmigrating semidiurnal tide
(SW1) at 10 hPa pressure level show considerable variability
during the warming episode.",
doi = "10.1016/j.asr.2018.12.037",
url = "http://dx.doi.org/10.1016/j.asr.2018.12.037",
issn = "0273-1177 and 1879-1948",
language = "en",
targetfile = "guharay_variability.pdf",
urlaccessdate = "27 abr. 2024"
}