@Article{CarvalhoPMLBPWT:2017:CaStCo,
author = "Carvalho, A. J. A. and Paulino, I. and Medeiros, A. F. and Lima,
L. M. and Buriti, R. A. and Paulino, A. R. and Wrasse, Cristiano
Max and Takahashi, Hisao",
affiliation = "{Universidade Federal de Pernambuco (UFPE)} and {Universidade
Federal de Campina Grande (UFCG)} and {Universidade Federal de
Campina Grande (UFCG)} and {Universidade Estadual da
Para{\'{\i}}ba (UEPB)} and {Universidade Federal de Campina
Grande (UFCG)} and {Universidade Federal de Campina Grande (UFCG)}
and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Case study of convective instability observed in airglow images
over the Northeast of Brazil",
journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
year = "2017",
volume = "154",
pages = "33--42",
month = "Feb.",
keywords = "Airglow images, Convective instability, Gravity wave, Mesospheric
inversion layer, SABER measurements.",
abstract = "An intense activity of ripples during the nighttime was observed
in airglow images over S{\~a}o Jo{\~a}o do Cariri (36.5° W, 7.4°
S) on 10 October 2004 which lasted for two hours. Those ripples
appeared simultaneously with the crossing of a mesospheric front
and medium scale gravity waves. The ripples occurred ahead of the
mesospheric front and their phase front were almost parallel to
the phase of the mesospheric front and were almost perpendicular
to the phase front of the gravity wave. Using wind measurements
from a meteor radar located at S{\~a}o Jo{\~a}o do Cariri and
simultaneous vertical temperature profiles from the TIMED/SABER
satellite, on the night of the events and within the imager field
of view, the atmospheric background environment in the mesosphere
and lower thermosphere (MLT) was investigated in order to
understand the instability process that caused the appearance of
the ripples. Dynamic and convective instabilities have been
pointed out as responsible for creation of ripples in the MLT. The
observed ripples were advected by the neutral wind, they occurred
into a region with negative lapse rate of the potential
temperature and the Richardson number was negative as well.
According to these characteristics, the ripple structures could be
generated in the MLT region due to the predominance of convective
instability.",
doi = "10.1016/j.jastp.2016.12.003",
url = "http://dx.doi.org/10.1016/j.jastp.2016.12.003",
issn = "1364-6826",
language = "en",
targetfile = "carvalho_case.pdf",
urlaccessdate = "30 abr. 2024"
}