@Article{FigueiredoWVTONSPS:2023:DaMeSc,
author = "Figueiredo, Cosme Alexandre Oliveira Barros and Wrasse, Cristiano
Max and Vadas, S. and Takahashi, Hisao and Otsuka, Y. and Nyassor,
Prosper Kwamla and Shiokawa, K. and Paulino, I. and Silva, Diego
Barros",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Northwest Research
Associates} and {Instituto Nacional de Pesquisas Espaciais (INPE)}
and {Nagoya University} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Nagoya University} and {Universidade
Federal de Campina Grande (UFCG)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Daytime Medium Scale Traveling Ionospheric Disturbances (MSTIDS)
Over the Andes Mountains at Equatorial and Low Magnetic
Latitudes",
journal = "Journal of Geophysical Research: Space Physics",
year = "2023",
volume = "128",
number = "10",
pages = "e2023JA031477",
month = "Oct.",
keywords = "detrended TEC, the Andes Mountains, traveling ionospheric
disturbances.",
abstract = "We analyze daytime quiet-time MSTIDs between 2013 and 2015 at the
geomagnetic equatorial and low latitude regions of the Chilean and
Argentinian Andes using keograms of detrended total electron
content (dTEC). The MSTIDs had a higher occurrence rate at
geomagnetic equatorial latitudes in the June solstice (winter) and
spring (SON). The propagation directions changed with the season:
summer (DJF) [southeast, south, southwest, and west], winter (JJA)
[north and northeast], and equinoxes [north, northeast, south,
southwest, and west]. In addition, the MSTIDs at low latitudes
observed between 8:00 and 12:00 UT occur more often during the
December solstice and propagate northwestward and northeastward.
After 12:00 UT, they are mostly observed in the equinoxes and June
solstice. Their predominant propagation directions depend on the
season: summer (all directions with a preference for
northeastward), autumn (MAM) [north and northeast], winter (north
and northeast), and spring (north, northeast, and southwest). The
MSTID propagation direction at different latitudes was explained
by the location of the possible sources. Besides, we calculated
MSTIDs parameters at geomagnetic low latitudes over the Andes
Mountains and compared them with those estimated at the
geomagnetic equatorial latitudes. We found that the former is
smaller on average than the latter. Also, our observations
validate recent model results obtained during geomagnetically
quiet-time as well as daytime MSTIDs during winter over the south
of South America. These results suggest that secondary or
high-order gravity waves (GWs) from orographic forcing are the
most likely source of these MSTIDs.",
doi = "10.1029/2023JA031477",
url = "http://dx.doi.org/10.1029/2023JA031477",
issn = "2169-9402",
language = "en",
targetfile = "JGR Space Physics - 2023 - Figueiredo - Daytime Medium Scale
Traveling Ionospheric Disturbances MSTIDS Over the Andes.pdf",
urlaccessdate = "15 jun. 2024"
}