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Convective ionospheric storms: A review
(American Geophysical Union, 2011-06-22)
Equatorial spread F (ESF) was discovered almost a century ago using the first radio wave instrument designed to study the upper atmosphere: the ionosonde. The name came from the appearance of reflections from the normally ...
VIPIR and 50 MHz radar studies of gravity wave signatures in 150‐km echoes observed at Jicamarca
(American Geophysical Union, 2020-08)
Range‐time‐intensity (RTI) plots of 50 MHz radar backscatter detected at Jicamarca from the 150‐km region of the equatorial ionosphere exhibit necklace‐shaped multilayered structures first reported by Kudeki and Fawcett ...
Interhemispheric propagation and interactions of auroral traveling ionospheric disturbances near the equator
(American Geophysical Union, 2016-02-11)
We present the results of our GPS total electron content and ionosonde observations of large‐scale traveling ionospheric disturbances (LSTIDs) during the 26 September 2011 geomagnetic storm. We analyzed the propagation ...
GPS and in situ Swarm observations of the equatorial plasma density irregularities in the topside ionosphere
(SpringerOpen, 2016-07-15)
Here we study the global distribution of the plasma density irregularities in the topside ionosphere by using the concurrent GPS and Langmuir probe measurements onboard the Swarm satellites. We analyze 18 months (from ...
Ionospheric tomographic common clock model of undifferenced uncombined GNSS measurements
(Springer, 2021-10-13)
In this manuscript, we introduce the Ionospheric Tomographic Common Clock (ITCC) model of undifferenced uncombined GNSS measurements. It is intended for improving the Wide Area precise positioning in a consistent and simple ...
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere
(European Geosciences Union, 2019-02)
The ionosphere is an anisotropic, dispersive medium for the propagation of radio frequency electromagnetic waves due to the presence of the Earth?s intrinsic magnetic field and free charges. The detailed physics of ...
Ionospheric high frequency wave propagation using different IRI hmF2 and foF2 models
(Elsevier, 2019-12)
High frequency (HF) electromagnetic wave propagation is commonly used in long-distance communication and detection. The ionosphere is a highly variable medium affecting this propagation. However, mean climatological ...
A technique for routinely updating the ITU-R database using radio occultation electron density profiles
(Springer, 2013-06-13)
Well credited and widely used ionospheric models, such as the International Reference Ionosphere or NeQuick, describe the variation of the electron density with height by means of a piecewise profile tied to the F2-peak ...
Low-latitude equinoctial spread-F occurrence at different longitude sectors under low solar activity
(Copernicus Publications, 2013-02-05)
We present the results of a comparative study of spread-F signatures over five low-latitude sites: Chiangmai (CGM; 18.8° N, 98.9° E, mag. Lat. 8.8° N), Thailand; Tanjungsari (TNJ; 6.9° S, 107.6° E, mag. Lat. 16.9° S), ...
Specification of the occurrence of equatorial ionospheric scintillations during the main phase of large magnetic storms within solar cycle 23
(American Geophysical Union, 2010-10-05)
Satellite communication and navigation systems operating at low latitudes suffer outages due to ionospheric scintillations during large magnetic storms that are not currently specified by any model. This paper describes ...