Results 11 to 20 of about 4,627 (227)

Triton: Topside ionosphere and nitrogen escape [PDF]

open access: yesGeophysical Research Letters, 1990
The principal ion in the ionosphere of Triton is N+. Energetic electrons of magnetospheric origin are the primary source of ionization, with a smaller contribution due to photoionization. To explain the topside plasma scale height, we postulate that N+ ions escape from Triton. The loss rate is 3.4 × 107 cm−2 s−1 or 7.9 × 1024 ions s−1.
Yung, Y. L., Lyons, J. R.
openaire   +3 more sources

On the Analytical Description of the Topside Ionosphere by NeQuick: Modeling the Scale Height Through COSMIC/FORMOSAT-3 Selected Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The analytical description of the topside ionosphere included in the NeQuick model is studied in detail. First, the modeled scale height behavior is analyzed at infinity and for the lowest part of the topside region; in the latter case, the analysis is ...
Alessio Pignalberi   +5 more
doaj   +1 more source

Topside ionospheric vertical electron density profile reconstruction using GPS and ionosonde data: possibilities for South Africa [PDF]

open access: yesAnnales Geophysicae, 2011
Successful empirical modeling of the topside ionosphere relies on the availability of good quality measured data. The Alouette, ISIS and Intercosmos-19 satellite missions provided large amounts of topside sounder data, but with limited coverage of ...
P. Sibanda   +4 more
doaj   +1 more source

Parallel Electrical Conductivity at Low and Middle Latitudes in the Topside Ionosphere Derived from CSES-01 Measurements

open access: yesRemote Sensing, 2022
The study of electrical currents in the topside ionosphere is of great importance, as it may allow a better understanding of the processes involved in the Sun–Earth interaction and magnetosphere–ionosphere–thermosphere coupling, two crucial aspects ...
Fabio Giannattasio   +6 more
doaj   +1 more source

Simulation of Transient Topside Layer in the Martian Ionosphere

open access: yesRemote Sensing, 2023
Many Mars missions, e.g., Mariner, Viking, Mars Global Surveyor (MGS), Mars Express (MEX), and Mars Atmosphere and Volatile Evolution (MAVEN), have been launched to study the Martian atmosphere.
Chunhua Jiang, Rong Tian, Lehui Wei
doaj   +1 more source

Altitude Extension of the NCAR‐TIEGCM (TIEGCM‐X) and Evaluation

open access: yesSpace Weather, 2022
The upper boundary height of the traditional community general circulation model of the ionosphere‐thermosphere system is too low to be applied to the topside ionosphere/thermosphere study.
Yihui Cai   +11 more
doaj   +1 more source

Comparing TOPEX TEC measurements with IRI predictions [PDF]

open access: yes, 2008
TEC values obtained from TOPEX satellite were compared with the International Reference Ionosphere (IRI) 2001 model estimates. The present work also shows results of the IRI model with the option of a new topside electron density distribution (NeQuick ...
Ezquer, Rodolfo Gerardo   +4 more
core   +1 more source

Electron density retrieval from truncated Radio Occultation GNSS data [PDF]

open access: yes, 2019
This paper summarizes the definition and validation of two complementary new strategies, to invert incomplete Global Navigation Satellite System Radio-Occultation (RO) ionospheric measurements, such as the ones to be provided by the future EUMETSAT Polar
Cardellach Galí, Estel   +3 more
core   +2 more sources

Substorm Induced Nighttime Plasma Flow Pulsations Observed by ROCSAT‐1 at Topside Ionosphere

open access: yesSpace Weather, 2023
The Republic of China Satellite‐1 orbiting at 600 km topside ionosphere has observed the topside ionospheric plasma flow pulsations induced by the substorm onsets.
S.‐Y. Su   +4 more
doaj   +1 more source

The Effect of the Thermosphere on Ionosphere Outflows

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The Naval Research Laboratory (NRL) Sami2 is Another Model of the Ionosphere (SAMI2) and Sami3 is Also a Model of the Ionosphere (SAMI3) ionosphere/plasmasphere codes have shown that thermosphere composition and winds significantly affect H+ outflows ...
J. Krall, J. D. Huba
doaj   +1 more source

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