Results 41 to 50 of about 19,021 (226)
The operational and research DTM-2020 thermosphere models
Journal of Space Weather and Space Climate, 2021 Aims: The semi-empirical Drag Temperature Models (DTM) predict the Earth’s thermosphere’s temperature, density, and composition, especially for orbit computation purposes.
Bruinsma Sean, Boniface Claude
doaj +1 more source
Stratwarm Effects in the Ionospheric D Region Wind Field [PDF]
, 1984 An analysis is made of the wind field structure in the strato-thermosphere over Eastern Siberia during the winter stratwarms of 1975-1977. It is found that coupling between dynamical processes in the stratosphere and lower thermosphere is effected ...
Vergasova, G. V.
core +1 more source
Role of gravity waves in vertical coupling during sudden stratospheric warmings
, 2016 Gravity waves are primarily generated in the lower atmosphere, and can reach thermospheric heights in the course of their propagation. This paper reviews the recent progress in understanding the role of gravity waves in vertical coupling during sudden ...
Medvedev, Alexander S., Yiğit, Erdal
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AGU Advances, Volume 7, Issue 3, June 2026.Abstract In Low Earth Orbit (LEO), atmospheric drag is the dominant source of trajectory prediction error below approximately 700 km altitude, primarily due to inaccuracies in thermospheric density models. This work presents a method for temporally deconvolving Energy Dissipation Rates (EDRs) to produce single‐satellite density estimates, which can be ...
S. Mutschler +6 more
wiley +1 more source
Ionospheric estimates of atomic oxygen concentration from charged particle measurements [PDF]
, 1971 Estimates of atomic concentration ionosphere from radar backscatter and rocket probe measurements of electron and ion temperatures and electron ...
Mahajan, K. K.
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Terrestrial Analogs to Titan for Geophysical Research
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon +21 more
wiley +1 more source
Investigating the drivers of long-term trends in the upper atmosphere over Rome across four decades
Journal of Space Weather and Space ClimateThe nature of the long-term changes in the upper atmosphere morphology at mid-latitude remains a subject of debate, particularly regarding whether these changes are purely driven by geomagnetic and solar activities or whether forcing from the lower ...
Spogli Luca +4 more
doaj +1 more source
Machine‐Learned HASDM Thermospheric Mass Density Model With Uncertainty Quantification
Space Weather, 2022 A thermospheric neutral mass density model with robust and reliable uncertainty estimates is developed based on the Space Environment Technologies (SET) High Accuracy Satellite Drag Model (HASDM) density database.
Richard J. Licata +3 more
doaj +1 more source
, 2017 Effects of subgrid-scale gravity waves (GWs) on the diurnal migrating tides are investigated from the mesosphere to the upper thermosphere for September equinox conditions, using a general circulation model coupled with the extended spectral nonlinear GW
Medvedev, Alexander S., Yiğit, Erdal
core +1 more source
Critical issues in ionospheric data quality and implications for scientific studies [PDF]
, 2019 Ionospheric data are valuable records of the behavior of the ionosphere, solar activity, and the entire Sun-Earth system. The data are critical for both societally important services and scientific investigations of upper atmospheric variability.
Araujo-Pradere, E. +5 more
core +2 more sources