Results 51 to 60 of about 4,627 (227)

Plasma transport in the topside venus ionosphere [PDF]

open access: yesPlanetary and Space Science, 1977
Abstract We have studied the extent to which certain transport processes affect ion composition and heat flow in the daytime, topside Venus ionosphere. Particular attention is given to the conditions that prevailed during the Mariner 5 measurements, at which time the topside Venus ionosphere appeared to be in a state of diffusive equilibrium. We have
Schunk, Robert W., St. -Maurice, J. -P.
openaire   +2 more sources

Tandem Observations of Nighttime Mid‐Latitude Topside Ionospheric Perturbations

open access: yesSpace Weather, 2023
AbstractNighttime medium‐scale traveling ionospheric disturbances (MSTIDs) have been generally observed by ground‐based instruments. However, they provide 2‐dimensional images over only a limited field of view and are not distributed globally. The ground‐based observations reported that MSTID wavefronts exhibit backward‐C shapes virtually straddling ...
Hosub Song   +6 more
openaire   +3 more sources

Quasi‐4‐Day Waves During the 2018/2019 SSW and Their Coupling to the Ionosphere Based on Whole Atmosphere Data Assimilation

open access: yesSpace Weather, Volume 24, Issue 3, March 2026.
Abstract A strong westward zonal wavenumber‐2 quasi‐4‐day wave (Q4DW) during the 2018/2019 Northern Hemisphere sudden stratospheric warming (SSW) is both captured by Aura Microwave Limb Sounder (MLS) observations and our new whole neutral atmosphere data assimilation system.
Wenxuan Wang   +6 more
wiley   +1 more source

Investigation of Large Scale Traveling Atmospheric/Ionospheric Disturbances Using the Coupled SAMI3 and GITM Models

open access: yesGeophysical Research Letters
We present simulation results of the vertical structure of Large Scale Traveling Ionospheric Disturbances (LSTIDs) during synthetic geomagnetic storms.
A. Bukowski   +4 more
doaj   +1 more source

Ionosphere/Plasmasphere sounding with ground and space-based GNSS observations [PDF]

open access: yes, 2016
Applying a methodology developed and tested in previous studies, the contribution from the ionospheric and plasmaspheric regions to the total electron content (measured by ground receivers) is analyzed.
González Casado, Guillermo   +3 more
core   +1 more source

Validation of Ionospheric Models at Mid‐ and High‐Latitudes: Climatological Performance of WACCM‐X (SD) and TIE‐GCM in foF2

open access: yesSpace Weather, Volume 24, Issue 3, March 2026.
Abstract Modeling the high‐latitude ionosphere‐thermosphere system is imperative to understanding the impacts of space weather on modern technology, such as communications and navigation systems. At low‐ and mid‐latitudes, physics‐based and empirical models are well‐developed and capture the variability of the ionosphere to a good degree of accuracy ...
Emma‐Claire Gurney   +3 more
wiley   +1 more source

ULF wave activity during the 2003 Halloween superstorm: multipoint observations from CHAMP, Cluster and Geotail missions [PDF]

open access: yesAnnales Geophysicae, 2012
We examine data from a topside ionosphere and two magnetospheric missions (CHAMP, Cluster and Geotail) for signatures of ultra low frequency (ULF) waves during the exceptional 2003 Halloween geospace magnetic storm, when Dst reached ~−380 nT. We
G. Balasis   +8 more
doaj   +1 more source

Topside Ionosphere and Plasmasphere Modelling Using GNSS Radio Occultation and POD Data

open access: yesRemote Sensing, 2021
A 3D-model approach has been developed to describe the electron density of the topside ionosphere and plasmasphere based on Global Navigation Satellite System (GNSS) measurements onboard low Earth orbit satellites.
Fabricio S. Prol, M. Mainul Hoque
doaj   +1 more source

Ionospheric estimates of atomic oxygen concentration from charged particle measurements [PDF]

open access: yes, 1971
Estimates of atomic concentration ionosphere from radar backscatter and rocket probe measurements of electron and ion temperatures and electron ...
Mahajan, K. K.
core   +2 more sources

Evaluation of Particle Scattering by Locally Generated Fast Magnetosonic Waves in the Martian Ionosphere

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Locally generated fast magnetosonic (local MS) waves in the Martian ionosphere have been reported recently, which are different from the solar wind‐driven MS waves. However, their effects on particle scattering have not been reported yet. This study pioneers the investigation of electron, proton, and oxygen atomic ion scattering induced by ...
Fei Yao   +3 more
wiley   +1 more source

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