Results 1 to 10 of about 2,463,485 (172)

A novel neural network model of Earth's topside ionosphere. [PDF]

Sci Rep, 2023
AbstractThe Earth’s ionosphere affects the propagation of signals from the Global Navigation Satellite Systems (GNSS). Due to the non-uniform coverage of available observations and complicated dynamics of the region, developing accurate models of the ionosphere has been a long-standing challenge.
Smirnov A, Shprits Y, Prol F, Lühr H, Berrendorf M, Zhelavskaya I, Xiong C.   +6 more
europepmc   +9 more sources

Modeling the Topside Ionosphere Effective Scale Height through In Situ Electron Density Observations by Low-Earth-Orbit Satellites

Universe, 2023
In this work, we aim to characterize the effective scale height at the ionosphere F2-layer peak (H0) by using in situ electron density (Ne) observations by Langmuir Probes (LPs) onboard the China Seismo-Electromagnetic Satellite (CSES—01).
Alessio Pignalberi, Michael Pezzopane, Tommaso Alberti, Igino Coco, Giuseppe Consolini, Giulia D’Angelo, Paola De Michelis, Fabio Giannattasio, Bruno Nava, Mirko Piersanti, Roberta Tozzi   +10 more
doaj   +4 more sources

Modeling the plasmasphere to topside ionosphere scale height ratio [PDF]

Journal of Space Weather and Space Climate, 2015
A new model of plasmasphere to topside ionosphere scale heights ratio is developed, based on topside electron density (Ne) profiles deduced from the International Satellites for Ionospheric Studies (ISIS)-1 satellite measurements.
Marinov Pencho, Kutiev Ivan, Belehaki Anna, Tsagouri Ioanna   +3 more
doaj   +3 more sources

On the Electron Temperature in the Topside Ionosphere as Seen by Swarm Satellites, Incoherent Scatter Radars, and the International Reference Ionosphere Model [PDF]

Remote Sensing, 2021
The global statistical median behavior of the electron temperature (Te) in the topside ionosphere was investigated through in-situ data collected by Langmuir Probes on-board the European Space Agency Swarm satellites constellation from the beginning of 2014 to the end of 2020.
Michael Pezzopane, Alessio Pignalberi, Roberta Tozzi   +2 more
exaly   +5 more sources

Ionospheric topside models compared with experimental electron density profiles

Annals of Geophysics, 2005
Recently an increasing number of topside electron density profiles has been made available to the scientific community on the Internet. These data are important for ionospheric modeling purposes, since the experimental information on the ...
S. M. Radicella, P. Coïsson
doaj   +6 more sources

Improvements of the International Reference Ionosphere model for the topside electron density profile [PDF]

Radio Science, 2006
Shortcomings of the representation of the topside electron density profile in the International Reference Ionosphere (IRI) model have been noted in comparison with recently analyzed topside sounder data and also with total electron content (TEC) data. Various studies have proposed corrections of the IRI formulas or have introduced a new formalism. This
Dieter Bilitza, S M Radicella, Tamara Gulyaeva   +2 more
exaly   +2 more sources

An Update of the NeQuick-Corr Topside Ionosphere Modeling Based on New Datasets [PDF]

Atmosphere
A new analytical formula for H0, one of the three parameters (H0, g, and r) on which the NeQuick model is based to describe the altitude profile of the electron density above the F2-layer peak height hmF2, has recently been proposed.
Michael Pezzopane, Alessio Pignalberi, Marco Pietrella, Haris Haralambous, Fabricio Prol, Bruno Nava, Artem Smirnov, Chao Xiong   +7 more
doaj   +3 more sources

Toward a Dynamic Model for Topside Ionospheric Irregularities: Spherical Harmonic Decomposition

Space Weather
Ionospheric irregularities arise from highly dynamic and turbulent processes related to magnetosphere‐ionosphere coupling and can lead to electromagnetic signal distortion or loss of lock events in global navigation satellite system signals, representing
S. Mestici, P. De Michelis, G. Consolini, A. Pignalberi, R. Tozzi, F. Giannattasio, F. Berilli   +6 more
doaj   +2 more sources

Validating the International Reference Ionosphere model through altimeter-satellite vTEC observations: implications for the topside ionosphere modeling

Journal of Geodesy
Abstract In this paper, we evaluate the performance of the last version of the International Reference Ionosphere model (IRI-2020) in describing the vertical total electron content (vTEC) through a comparison against observations by several altimeter satellites (TOPEX/POSEIDON, JASON 1, 2, and 3) over the oceans.
Michael Pezzopane, Dieter Bilitza, Alessio Pignalberi   +2 more
exaly   +3 more sources

Modeling of Topside Ionosphere and Plasmasphere [PDF]

, 2021
Abstract We developed a new topside ionosphere and plasmasphere model using a machine learning technique using approximately five million electron density datasets from the Japanese satellites, namely, Hinotori, Akebono, and Arase. The topside ionosphere and plasmasphere model (TIP-model) can estimate electron densities at altitudes ranging ...
Shigeto Watanabe, Yoshizumi Miyoshi, Fuminori Tsuchiya, Atsusi Kumamoto, Yoshiya Kasahara, Ayako Matsuoka, Iku Shinohara   +6 more
openaire   +1 more source