Results 31 to 40 of about 11,342 (218)

Thermospheric winds and temperatures above Mawson, Antarctica, observed with an all-sky imaging, Fabry-Perot spectrometer [PDF]

, 2009
A new all-sky imaging Fabry-Perot spectrometer has been installed at Mawson station (67°36' S, 62°52' E), Antarctica. This instrument is capable of recording independent spectra from many tens of locations across the sky simultaneously.
Anderson, C., Kosch, M.J., P. Dyson, Davies, T., M. J. Kosch, Conde, M., Dyson, P., M. Conde, C. Anderson, T. Davies   +9 more
core   +2 more sources

Gas-surface interactions modelling influence on satellite aerodynamics and thermosphere mass density

Journal of Space Weather and Space Climate, 2021
The satellite acceleration data from the CHAMP, GRACE, GOCE, and Swarm missions provide detailed information on the thermosphere density over the last two decades.
March Günther, van den IJssel Jose, Siemes Christian, Visser Pieter N. A. M., Doornbos Eelco N., Pilinski Marcin   +5 more
doaj   +1 more source

Vertical damping of gravity waves evaluated from ACS-TGO solar occultation measurements on Mars

Frontiers in Astronomy and Space Sciences
Amplitudes of gravity waves generated in the lower and denser atmospheric layers grow exponentially with height as they propagate to the upper and thinner atmosphere, where they are reduced by various processes.
Ekaterina D. Starichenko, Alexander S. Medvedev, Denis A. Belyaev, Anna A. Fedorova, Alexander Trokhimovskiy, Paul Hartogh, Franck Montmessin, Oleg I. Korablev   +7 more
doaj   +1 more source

First direct evidence of meso-scale variability on ion-neutral dynamics using co-located tristatic fpis and EISCAT radar in Northern Scandinavia [PDF]

, 2005
International audienceThis paper presents the first direct empirical evidence that mesoscale variations in ion velocities must be taken into consideration when calculating Joule heating and relating it to changes in ion temperatures and momentum transfer
Aylward, A. D., Ford, E. A. K., Aruliah, A. L., Pryse, S. E., C. J. Davis, Middleton, H. R., E. M. Griffin, H. R. Middleton, V. S. C. Howells, Howells, V. S. C., Kosch, M. J., M. J. Kosch, S. E. Pryse, A. L. Aruliah, E. A. K. Ford, Griffin, E. M., Jussila, J., J. Jussila, A. D. Aylward, Davis, C. J.   +19 more
core   +2 more sources

Center for geospace storms graduate student workshop

Frontiers in Astronomy and Space Sciences
The US National Aeronautics and Space Administration (NASA) DRIVE Center for Geospace Storms (CGS) hosted a workshop for graduate students conducting research in geospace science in November 2024.
Amy Keesee, Viacheslav G. Merkin, Michael Wiltberger, Stephen Hale, Eric Winter, Nikhil Rao   +5 more
doaj   +1 more source

Longitudinal variability of thermospheric zonal winds near dawn and dusk

Frontiers in Astronomy and Space Sciences, 2023
Understanding the morphology and dynamics of the thermosphere is key to understanding the Earth’s upper atmosphere as a whole. Thermospheric winds play an important role in this process by transporting momentum and energy and affecting the composition ...
Ivana Molina, Ludger Scherliess
doaj   +1 more source

Dynamical Heating in the Martian Thermosphere 

Journal of Geophysical Research: Planets, 2022
Dynamical heating and cooling are prominent features of planetary atmospheres resulting in thermospheric structures on Venus, Earth and Mars. The purpose of this study is to determine the location and amplitude of localized heating regions in the Martian thermosphere, confirm that they occur in regions of wind convergence, and to compare the observed ...
M. D. Pilinski, K. J. Roeten, S. W. Bougher, M. Benna   +3 more
openaire   +1 more source

Numerical modeling of spatial perturbations of the ionosphere from local tropospheric sources

Solar-Terrestrial Physics
The paper presents the results of modeling of spatial and temporal perturbations of the thermosphere during a strong meteorological disturbance. The modeling was performed using the Global Self-Consistent Model of the thermosphere, ionosphere, and ...
Karpov Ivan, Bessarab Fedor, Borchevkina Olga   +2 more
doaj   +1 more source

Scientific motivations and future directions of whole atmosphere modeling

Frontiers in Astronomy and Space Sciences, 2022
The recent development of whole atmosphere models that extend from the surface to the upper thermosphere represents a significant advance in modeling capabilities of the ionosphere-thermosphere.
N. M. Pedatella, N. M. Pedatella
doaj   +1 more source

An Operational Daily‐Filtered Dominion Radio Astrophysical Observatory F10.7 cm Solar Radio Flux Product

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract The F10.7 solar radio flux density, or F10.7, is a disk‐integrated measure of the Sun's total emission at 10.7 cm (2.8 GHz) and is a widely‐used proxy of solar activity. F10.7 emissions primarily originate from the Sun's upper chromosphere and lower corona. High‐frequency, transient “radio bursts” can dramatically increase the magnitude of F10.
C. Kuester, O. M. Coddington, C. Lindholm, C. L. Peck   +3 more
wiley   +1 more source