@Article{SousasantosMoSoMuPaPa:2018:ClScOn,
author = "Sousasantos, Jonas and Moraes, Alison de Oliveira and Sobral,
Jos{\'e} Humberto Andrade and Muella, Marcio T. A. H. and Paula,
Eurico Rodrigues de and Paolini, Rafael S.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
de Aeron{\'a}utica e Espa{\c{c}}o (IAE)} and {Instituto Nacional
de Pesquisas Espaciais (INPE)} and {Universidade do Vale do
Para{\'{\i}}ba (UNIVAP)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and EMBRAER",
title = "Climatology of the scintillation onset over southern Brazil",
journal = "Annales Geophysicae",
year = "2018",
volume = "36",
number = "2",
pages = "565--576",
month = "Apr.",
keywords = "Ionosphere, ionospheric irregularities, modeling and forecasting,
radio science, space and satellite communication.",
abstract = "This work presents an analysis of the climatology of the onset
time of ionospheric scintillations at low latitude over the
southern Brazilian territory near the peak of the equatorial
ionization anomaly (EIA). Data from L1 frequency GPS receiver
located in Cachoeira Paulista (22.4 degrees S, 45.0 degrees W; dip
latitude 16.9 degrees S), from September 1998 to November 2014,
covering a period between solar cycles 23 and 24, were used in the
present analysis of the scintillation onset time. The results show
that the start time of the ionospheric scintillation follows a
pattern, starting about 40 min earlier, in the months of November
and December, when compared to January and February. The analyses
presented here show that such temporal behavior seems to be
associated with the ionospheric prereversal vertical drift (PRVD)
magnitude and time. The influence of solar activity in the
percentage of GPS links affected is also addressed together with
the respective ionospheric prereversal vertical drift behavior.
Based on this climatological study a set of empirical equations is
proposed to be used for a GNSS alert about the scintillation
prediction. The identification of this kind of pattern may support
GNSS applications for aviation and oil extraction maritime
stations positioning.",
doi = "10.5194/angeo-36-565-2018",
url = "http://dx.doi.org/10.5194/angeo-36-565-2018",
issn = "0992-7689",
language = "en",
targetfile = "sousasantos_climatology.pdf",
urlaccessdate = "03 maio 2024"
}