Study of sporadic E layers based on GPS radio occultation measurements and digisonde data over the Brazilian region
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Published:2018-04-03
Issue:2
Volume:36
Page:587-593
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ISSN:1432-0576
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Container-title:Annales Geophysicae
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language:en
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Short-container-title:Ann. Geophys.
Author:
Resende Laysa C. A., Arras Christina, Batista Inez S.ORCID, Denardini Clezio M.ORCID, Bertollotto Thainá O., Moro JulianoORCID
Abstract
Abstract. This work presents new results about sporadic E-layers (Es layers) using
GPS (global positioning system) radio occultation (RO) measurements obtained
from the FORMOSAT-3/COSMIC satellites and digisonde data. The RO profiles are
used to study the Es layer occurrence as well as its intensity of the
signal-to-noise ratio (SNR) of the 50 Hz GPS L1 signal. The methodology was
applied to identify the Es layer on RO measurements over Cachoeira Paulista, a
low-latitude station in the Brazilian region, in which the Es layer
development is not driven tidal winds only as it is at middle latitudes. The
coincident events were analyzed using the RO technique and ionosonde observations during the
year 2014 to 2016. We used the electron density obtained using
the blanketing frequency parameter (fbEs) and the Es layer height
(h'Es) acquired from the ionograms to validate the satellite measurements.
The comparative results show that the Es layer characteristics extracted
from the RO measurements are in good agreement with the Es layer parameters
from the digisonde. Keywords. Ionosphere (ionosphere–atmosphere interactions)
Funder
Fundação de Amparo à Pesquisa do Estado de São Paulo Conselho Nacional de Desenvolvimento Científico e Tecnológico
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
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