@Article{GiongoBaFiWrKaKiSc:2020:GeChWi,
author = "Giongo, Gabriel Augusto and Bageston, Jos{\'e} Valentin and
Figueiredo, Cosme Alexandre Oliveira Barros and Wrasse, Cristiano
Max and Kam, Hosik and Kim, Yong Ha and Schuch, Nelson Jorge",
affiliation = "{Universidade Federal de Santa Maria (UFSM)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Chungnam National University (CNU)} and
{Chungnam National University (CNU)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Gravity wave investigations over Comandante Ferraz Antarctic
Station in 2017: General characteristics, wind filtering and case
study",
journal = "Atmosphere",
year = "2020",
volume = "11",
number = "8",
pages = "e3784",
month = "Aug.",
keywords = "airglow, atmospheric gravity waves, winds, blocking diagram, ray
tracing.",
abstract = "This work presents the characteristics of gravity waves observed
over Comandante Ferraz Antarctic Station (EACF: 62.1\◦ S,
58.4\◦ W). A total of 122 gravity waves were observed in 34
nights from March to October 2017, and their parameters were
obtained by using the Fourier Transform spectral analysis. The
majority of the observed waves presented horizontal wavelength
ranging from 15 to 35 km, period from 5 to 20 min, and horizontal
phase speed from 10 to 70 ± 2 m · s \−1 . The propagation
direction showed an anisotropic condition, with the slower wave
propagating mainly to the west, northwest and southeast
directions, while the faster waves propagate to the east,
southeast and south. Blocking diagrams for the period of AprilJuly
showed a good agreement between the wave propagation direction and
the blocking positions, which are eastward oriented while the
waves propagate mainly westward. A case study to investigate wave
sources was conducted for the night of 2021 July, wherein eight
small-scale and one medium-scale gravity waves were identified.
Reverse ray tracing model was used to investigate the gravity wave
source, and the results showed that six among eight small-scale
gravity waves were generated in the mesosphere. On the other hand,
only two small-scale waves and the medium-scale gravity wave had
likely tropospheric or stratospheric origin, however, they could
not be associated with any reliable source.",
doi = "10.3390/ATMOS11080880",
url = "http://dx.doi.org/10.3390/ATMOS11080880",
issn = "2073-4433",
language = "en",
targetfile = "giongo_gravity.pdf",
urlaccessdate = "28 abr. 2024"
}