Results 51 to 60 of about 24,137 (262)
Recent progress on the retrieval and modeling of thermosphere mass density
地球与行星物理论评, 2023 The thermosphere is the atmospheric layer extending from about 90 km to nearly 1000 kilometers, which is an important interreaction area between the Sun and the Earth.
Jiuhou Lei +4 more
doaj +1 more source
Transport Processes in the Thermosphere
, 1972 The atmosphere is highly stratified, even to high levels, and hence important transport questions arise in which vertical transport alone constitutes a useful approximation. Thus, the thermosphere was first described in terms of molecular conduction transferring heat from higher levels to lower, which is required because of the lack of adequate energy ...
Francis S. Johnson, Francis S. Johnson
openaire +2 more sources
Thermosphere and exosphere of hot Jupiters [PDF]
Proceedings of the International Astronomical Union, 2008 AbstractHere we describe the observations and the resulting constraints on the upper atmosphere (thermosphere and exosphere) of hot Jupiters. In particular, observations and theoretical modeling of hot-Jupiter evaporation are described. The observations allowed the discovery that the planet orbiting HD209458 has an extended atmosphere of escaping ...
openaire +4 more sources
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
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
core +1 more source
The Mother's Day Storm of 2024 Triggered the Strongest Nighttime Radiative Emission of the SABER Era
Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.Abstract The response of Nitric Oxide (NO) 5.3 µm infrared radiative emission to the 2024 Mother's Day storm is investigated by utilizing Sounding of Atmosphere using Broadband Emission Radiometry (SABER) observations onboard the Thermosphere‐Ionosphere‐Mesosphere Energetics and Dynamics (TIMED) satellite.
Tikemani Bag, Vir Singh
wiley +1 more source
Journal of Advances in Modeling Earth Systems, 2018 Key developments have been made to the NCAR Whole Atmosphere Community Climate Model with thermosphere and ionosphere extension (WACCM‐X). Among them, the most important are the self‐consistent solution of global electrodynamics, and transport of O+ in ...
Han‐Li Liu +15 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
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
, 2015 First high-altitude observations of gravity wave (GW)-induced CO$_2$ density perturbations in the Martian thermosphere retrieved from NASA's NGIMS instrument on board the MAVEN satellite are presented and interpreted using the extended GW ...
England, Scott L. +6 more
core +1 more source