Results 11 to 20 of about 11,342 (218)

The thermosphere of Titan [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 1984
The diurnal variation of the vertical structure of Titan's thermosphere is calculated through simultaneous solution of the equations of heat transfer and hydrostatic equilibrium. The temperature and density profiles are found above the mesopause. The dynamical response of the thermosphere to heating is for the most part neglected.
Friedson, A. James, Yung, Yuk L.
openaire   +4 more sources

Temperature enhancements and vertical winds in the lower thermosphere associated with auroral heating during the DELTA campaign [PDF]

open access: yes, 2009
A coordinated observation of the atmospheric response to auroral energy input in the polar lower thermosphere was conducted during the Dynamics and Energetics of the Lower Thermosphere in Aurora (DELTA) campaign.
Kurihara, J.   +13 more
core   +5 more sources

Thermospheric atomic oxygen density estimates using the EISCAT Svalbard Radar [PDF]

open access: yes, 2013
[1] Coupling between the ionized and neutral atmosphere through particle collisions allows an indirect study of the neutral atmosphere through measurements of ionospheric plasma parameters. We estimate the neutral density of the upper thermosphere above ~
Sutton, E.   +4 more
core   +5 more sources

Sharing Data Collections and Models for Ionosphere, Thermosphere and Plasmasphere Research [PDF]

open access: yes, 2022
PITHIA-NRF (Plasmasphere Ionosphere Thermosphere Integrated Research Environment and Access services: a Network of Research Facilities) is a project funded by the European Commission’s H2020 programme to build a distributed network of observing ...
Kiss, T.   +6 more
core   +4 more sources

What to Do When the F10.7 Goes Out?

open access: yesSpace Weather, 2023
The solar radio flux at 10.7 cm, known as F10.7, is a critical operational space weather index. However, without a clear backup, any interruption to the service can result in substantial errors in model outputs.
Sean Elvidge   +3 more
doaj   +1 more source

Atmospheric and Ionospheric Responses to Hunga‐Tonga Volcano Eruption Simulated by WACCM‐X

open access: yesGeophysical Research Letters, 2023
High‐resolution Whole Atmosphere Community Climate Model with thermosphere/ionosphere extension is used to simulate the responses to the Hunga‐Tonga volcano eruption on 15 January 2022.
H.‐L. Liu   +4 more
doaj   +1 more source

Assimilation of thermospheric measurements for ionosphere‐thermosphere state estimation [PDF]

open access: yesRadio Science, 2016
AbstractWe develop a method that uses data assimilation to estimate ionospheric‐thermospheric (IT) states during midlatitude nighttime storm conditions. The algorithm Estimating Model Parameters from Ionospheric Reverse Engineering (EMPIRE) uses time‐varying electron densities in the F region, derived primarily from total electron content data, to ...
Daniel S. Miladinovich   +3 more
openaire   +1 more source

Thermospheric tides during thermosphere mapping study periods [PDF]

open access: yesAdvances in Space Research, 1987
Neutral exospheric temperatures at 53°, 43° and 33° latitude from Millstone Hill steerable-antenna Thomson scatter measurements, and at 19° latitude from the Arecibo Observatory, obtained during three Thermosphere Mapping Study (TMS) coordinated campaign intervals during 1984 and 1985. are analyzed for diurnal and semidiurnal tidal components.
Forbes, J. M.   +3 more
openaire   +2 more sources

Heating and cooling of the thermosphere by internal gravity waves [PDF]

open access: yes, 2009
For the first time, estimates of heating and cooling in the upper thermosphere due to dissipating and breaking gravity waves ( GWs) of tropospheric origin have been obtained with a comprehensive general circulation model ( GCM).
Yiğit, E.   +5 more
core   +1 more source

IMF Dependence of Midnight Bifurcation in the Thermospheric Wind at an Auroral Latitude Based on Nine Winter Measurements in Tromsø, Norway

open access: yesGeophysical Research Letters, 2023
A thermospheric wind data set from a Fabry‐Perot interferometer (630 nm) and the ion velocity from a Dynasonde in Tromsø, Norway, was analyzed for nine winter seasons to study the dynamics of the thermosphere and F‐region ionosphere at an auroral ...
S. Oyama   +10 more
doaj   +1 more source

Home - About - Disclaimer - Privacy